Patent Publication Number: US-9891065-B2

Title: Transit incidents

Description:
CLAIM OF BENEFIT TO PRIOR APPLICATIONS 
     This application claims the benefit of U.S. Provisional Patent Application 62/172,206, filed Jun. 7, 2015; U.S. Provisional Patent Application 62/172,209, filed Jun. 7, 2015; U.S. Provisional Patent Application 62/172,214, filed Jun. 7, 2015; U.S. Provisional Patent Application 62/172,216, filed Jun. 7, 2015; and U.S. Provisional Patent Application 62/172,147, filed Jun. 7, 2015. U.S. Provisional Patent Applications 62/172,206, 62/172,209, 62/172,214, 62/172,216, and 62/172,147 are incorporated herein by reference. 
    
    
     BACKGROUND 
     With proliferation of mobile devices such as smartphones, users are enjoying numerous applications of numerous kinds that can be run on their devices. One popular type of such applications is mapping and navigation applications that allow users to browse maps and receive route directions. Despite their popularity, these mapping and navigation applications have yet to provide a comprehensive and efficient transit routing and navigation system. 
     BRIEF SUMMARY 
     Some embodiments of the invention provide a map application that provides a comprehensive and efficient transit navigation modality for planning a transit trip by browsing and selecting a transit route and navigating the selected transit route. The map application of some embodiments operates in a map-browsing mode to allow a user to browse a map of a locality and to perform searches for map locations based on addresses, names (e.g., people, businesses, etc.) or other search parameters. The map application of some such embodiments also has a navigation mode that includes a driving navigation mode to provide driving navigation directions, a walking navigation mode to provide walking navigation directions, and a transit navigation mode to provide transit navigation directions. 
     The map application of some embodiments, upon receiving a request to display a route in transit mode, identifies one or more transit routes between two locations and displays the best possible transit route among the identified routes to the user. Specifically, to identify the transit routes, the application of some embodiments examines different transit legs that one or more transit vehicles of one or more transit systems travel from locations near a specified starting location (e.g., the current location of the device) to locations near a specified destination. In some embodiments, each transit leg of a transit route includes a section of the transit route that is traveled by a transit vehicle of a transit line. A transit leg may also include a walking distance that is more than a threshold distance. 
     In examining the transit legs, the application of some embodiments takes into account a set of transit preferences that are customized (i.e., set or adjusted) by the user. For instance, in some embodiments, a user may adjust the date and time of the departure (from, e.g., the current location of the user) to a particular date and time instead of the current time. Conversely, the user may prefer a particular type of transit vehicle (i.e., a transit vehicle of a particular transit system) over the other types. For example, the user might rather ride a subway train over a bus for a particular transit leg of a transit route, or use only ground transportation for an entire transit route (e.g., a transit route without any ferry trips). 
     The map application of some embodiments displays the best identified route in its entirety over a portion of a map presentation of a geographical area. The application of some such embodiments displays the identified route in multiple sections (transit legs) each of which is traveled by a transit vehicle of a particular transit line. The map application uses different graphical representations for different portions of a displayed transit route that are traveled by different types of transit vehicles or require walking. 
     In some embodiments, the different types of transit vehicles that are presented by different graphical representations include buses, subway trains, rail trains (e.g., light rail trains and heavy rail trains), and ferries. Each of these four categories may include multiple different subcategories in some embodiments and additional transit categories (e.g., tramways, trolleys, etc.) may be present in some embodiments. When the selected transit route includes multiple transit vehicles of the same type (same transit system), each transit vehicle of the same transit system is distinguished from the other transit vehicles by a different line of the transit vehicle. 
     As described above, the map application of some embodiments, after identifying the transit routes, ranks the identified routes based on a set of criteria (e.g., quickness of the route, shortness of the route, least number of change of transit vehicles, etc.). The map application then rearranges the ranked transit routes based on a set of real time incident data received from one or more dedicated servers or through social media networks (e.g., Facebook, Twitter, etc.) or other types of private and public networks. That is, before displaying the highest ranked transit route to the user, the application of some embodiments requests for real time traffic data (e.g., any potential incident) that can affect the identified routes. 
     The map application displays an incident report in one or more display areas of the application&#39;s user interface. The displayed incident report indicates why the currently displayed transit route is selected as the best route by the map application when the settings in the predefined set of criteria and the user preferences dictated otherwise. The incident report may also include any incident (e.g., car accident, road work, etc.) occurred along the currently displayed transit route. Some embodiments display an estimated time of arrival at the destination (e.g., a searched location) in the display area of the incident report when (1) there is no specific reason for selection of the currently displayed route as the best route other than the settings in the predefined set of criteria and the user preferences, and (2) there is no incident occurred along the currently displayed route. 
     In some embodiments, the incidents are characterized as either blocking incidents or non-blocking incidents. Some embodiments categorize an incident as a blocking incident when the incident causes the route, to which the incident is attached, almost unusable. Some such embodiments categorize the incident as a blocking incident, when the incident causes the transit leg to which it is attached (i.e., along which it has occurred) unusable for more than a threshold amount of time. When a blocking incident is attached to a transit leg of a particular transit route, that particular transit route cannot be selected to replace a currently selected and displayed transit route. In other words, when a blocking incident has occurred along a particular identified transit route between two locations, even though the particular route is displayed to the user as one of the identified routes (e.g., in form of a route summary presentation), the route cannot be selected by the user to replace another selected route. Conversely, when a non-blocking incident is attached to a transit route (i.e., to a transit leg of the transit route) the transit route is still selectable and can replace the currently selected and displayed transit route. 
     The preceding Summary is intended to serve as a brief introduction to some embodiments of the invention. It is not meant to be an introduction or overview of all-inventive subject matter disclosed in this document. The Detailed Description that follows and the Drawings that are referred to in the Detailed Description will further describe the embodiments described in the Summary as well as other embodiments. Accordingly, to understand all the embodiments described by this document, a full review of the Summary, Detailed Description and the Drawings is needed. Moreover, the claimed subject matters are not to be limited by the illustrative details in the Summary, Detailed Description and the Drawings, but rather are to be defined by the appended claims, because the claimed subject matters can be embodied in other specific forms without departing from the spirit of the subject matters. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The novel features of the invention are set forth in the appended claims. However, for purposes of explanation, several embodiments of the invention are set forth in the following figures. 
         FIG. 1  illustrates how the transit navigation mode of a map application can be selected. 
         FIG. 2  conceptually illustrates a process that the map application of some embodiments performs to determine what type of transit information should be displayed in the incident display area. 
         FIG. 3  illustrates the incident display area displaying three different messages, in three different examples, for three different conditions related to the displayed transit route. 
         FIG. 4  illustrates how a user can scroll through the different display areas of a map application UI in order to view the whole information provided in these display areas. 
         FIG. 5  illustrates a user selecting the More Routes control to view the other identified transit routes between the current location of the device and the destination location. 
         FIG. 6  illustrates an example of replacing a displayed transit route with another identified route between the current location of the device and a destination location. 
         FIG. 7  illustrates another example of replacing a displayed transit route with a second different route between the current location of the device and a destination location. 
         FIG. 8  conceptually illustrates a mapping service that gathers different incident data (e.g., through an incident curator and incidents storage) and use this data in order to generate transit routes. 
         FIG. 9  conceptually illustrates a data structure (e.g., a table, a data source, etc.) of the incident database storage that is described in  FIG. 8 . 
         FIG. 10  illustrates an example of an architecture of a mobile computing device of some embodiments. 
         FIG. 11  conceptually illustrates another example of an electronic system with which some embodiments of the invention are implemented. 
         FIG. 12  illustrates one possible embodiment of an operating environment for a map service (also referred to as a mapping service) and client devices. 
     
    
    
     DETAILED DESCRIPTION 
     In the following detailed description of the invention, numerous details, examples, and embodiments of the invention are set forth and described. However, it will be clear and apparent to one skilled in the art that the invention is not limited to the embodiments set forth and that the invention may be practiced without some of the specific details and examples discussed. 
     Some embodiments of the invention provide a map application that provides a comprehensive and efficient transit navigation modality for planning a transit trip by browsing and selecting a transit route and navigating the selected transit route. The map application of some embodiments operates in a map-browsing mode to allow a user to browse a map of a locality and to perform searches for map locations based on addresses, names (e.g., people, businesses, etc.) or other search parameters. The map application of some such embodiments also has a navigation mode that includes a driving navigation mode to provide driving navigation directions, a walking navigation mode to provide walking navigation directions, and a transit navigation mode to provide transit navigation directions. 
     The map application of some embodiments, upon receiving a request to display a route in transit mode, identifies one or more transit routes between two locations and displays the best possible transit route among the identified routes to the user. Specifically, to identify the transit routes, the application of some embodiments examines different transit legs that one or more transit vehicles of one or more transit systems travel from locations near a specified starting location (e.g., the current location of the device) to locations near a specified destination. In some embodiments, each transit leg of a transit route includes a section of the transit route that is traveled by a transit vehicle of a transit line. A transit leg may also include a walking distance that is more than a threshold distance. 
     In examining the transit legs, the application of some embodiments takes into account a set of transit preferences that are customized (i.e., set or adjusted) by the user. For instance, in some embodiments, a user may adjust the date and time of the departure (from, e.g., the current location of the user) to a particular date and time instead of the current time. Conversely, the user may prefer a particular type of transit vehicle (i.e., a transit vehicle of a particular transit system) over the other types. For example, the user might rather ride a subway train over a bus for a particular transit leg of a transit route, or use only ground transportation for an entire transit route (e.g., a transit route without any ferry trips). 
     Based on the examination of the transit legs, the map application identifies one or more transit routes that use one or more transit vehicles of one or more transit systems in some embodiments. The identified routes may also include one or more pedestrian routes that are between the different transit trips, between the starting location and the first transit trip, and between the last transit trip and the destination location. After identifying the transit routes, the map application selects one of the identified transit routes based on a set of criteria (e.g., fastest route, shortest route, route with least amount of walking, route requiring least amount of transit vehicle changes, route requiring least amount of transit system changes, etc.), and displays this selected route over the map presentation. In some embodiments, the selection criteria set relies on two or more selection parameters. Also, in some embodiments, the selection criteria set is different in different transit markets and/or in different time periods in the same transit market. 
     The map application of some embodiments displays the best identified route in its entirety over a portion of a map presentation of a geographical area. The application of some such embodiments displays the identified route in multiple sections (transit legs) each of which is traveled by a particular transit vehicle. The map application uses different graphical representations for different portions of a displayed transit route that are traveled by different types of transit vehicles or require walking. In some embodiments, the different types of transit vehicles that are presented by different graphical representations include buses, subway trains, rail trains (e.g., light rail trains and heavy rail trains), and ferries. Each of these four categories may include multiple different subcategories in some embodiments. When the selected transit route includes multiple transit vehicles of the same type (same transit system), each transit vehicle of the same transit system is distinguished from the other transit vehicles by a different line of the transit vehicle (e.g., a different subway line, a different bus line, etc.). 
       FIG. 1  illustrates a map application that provides transit navigation presentations of some embodiments of the invention. In some embodiments, the map application executes on a mobile device (e.g., a smartphone, a tablet, a laptop, etc.) with a touch-sensitive display screen. Although, all the features and concepts of the map application discussed below are equally applicable to other devices with non-touch-sensitive display screens. The map application can operate in a map-browsing mode to allow a user to browse a map of a locality and to perform searches for map locations based on addresses, names (e.g., people, businesses, etc.) or other search parameters. The application also has a navigation mode that includes a driving navigation mode to provide driving navigation directions, a walking navigation mode to provide walking navigation directions, and a transit navigation mode to provide transit navigation directions. 
       FIG. 1  illustrates, in four operational stages  105 - 120  of the user interface (UI)  100  of the map application, how the transit navigation mode of the map application can be selected by requesting for a route from the current location of the user to a searched destination. The application then displays a route that is traveled by a combination of two different transit vehicles (of two different types) between the current location of the user and the searched destination. Some embodiments provide the user with a search box to search for a particular location. The user may then enter an address of a particular place or alternatively a name of the place in the search box. When the address (or name) of the place is specified, the map application of some embodiments provides an indicator (e.g., a pin) over a presentation of the map to display the exact location of the place on the map presentation. In addition, some such embodiments display a banner (e.g., over the pin) with selectable controls for providing more information about the place. 
     The first stage  105  of  FIG. 1  illustrates a search box  125 , a map presentation area  130  that displays a map of a geographical area, a pin  135 , and a banner  140 . The banner  140  includes a selectable route control  145  (which is depicted as a presentation of a car), a name  150  of the searched place, and a selectable control  155  (which is depicted as a right arrow). In the search box  125 , a user can enter a search parameter to search for a particular location for display in the map presentation area  130 . In some embodiments, the search parameter can be an address or a name of an entity (e.g., business, organization, person, etc.), or some other parameter. When the map application can identify one or more locations for the search parameter that it receives, the map application in some embodiments (1) displays, in the presentation area  130 , a map that displays some or all of the identified locations, and (2) displays a pin  135  or other location indicator for each displayed location to identify the position of the identified location. Also, in some embodiments, the map application displays a banner  140  over one of the pins  135  for providing access to more information about the location identified by the pin. The banner also provides some information about the identified location. 
     The first stage  105  of the figure shows that the user has entered an address in the search box  125  (123 A Street). As a result, the application displays, in the map presentation area  130 , a map of a particular geographical area in which the entered address is located. This stage also shows that the application further displays (1) the pin  135  over the map presentation to identify the location of the entered address on the map and (2) the banner  140  over the pin. As shown, this banner includes the address “123 A Street,” the route control  145 , and the selectable control  155 , which when selected causes the map application to present a display area (e.g., a placecard) that provides more information about the identified location. 
     The second stage  110  illustrates that the user selects the selectable route control  145  (e.g., by performing a gestural input on the touch-sensitive display screen of the device, such as tapping the user&#39;s finger on the control  145 ). Selection of the route control  145  causes the application to display a route overview (e.g., a driving route) from the current location of the user to the searched location (i.e., to the pin  135 ) over the map presented in the map presentation area  130 . In some embodiments, the route control  145  is also for initiating a navigation experience. For instance, the map application of some embodiments provides one or more routes to the location of the pin from the current location of the device upon receiving a selection of the route control. When a route is selected, the map application can start operating in a navigation mode or in a route inspection mode depending on the user&#39;s next selection. 
     The third stage  115  shows that the displayed route  175  is laid over the region map. The third stage  115  also shows three navigation mode controls, which are the driving mode control  178 , the walking mode control  180 , and the transit mode control  182 . Through these controls, the user can direct the map application to provide one or more driving routes, walking routes, and transit routes from the specified starting location (i.e., the device&#39;s current location in this example) to the specified destination (i.e., to 123 A Street in this example). The third stage  115  shows the driving mode control  178  highlighted to indicate that the route  175  that the application initially provides is a driving route. In some embodiments, the map application dynamically determines whether to provide an initial driving, walking or transit route based on the distance to the destination, the locality in which the device currently operates, and the detected current mode of transportation for the device (if any). 
     The map application of some embodiments makes a dynamic determination for the default mode of navigation based on a set of motion data that it receives through the different sensors of the device and a set of rules that specifies the default mode of navigation under different detected conditions. For instance, the application detects the current user activity (e.g., driving, walking, biking, etc.) from motion data that some detecting sensors of the device collect and based on the determined activity, automatically sets the default navigation mode to the pedestrian mode (i.e., walking mode) or driving mode. For instance if the application determines, based on the motion data it receives from the motion sensors, that the user of the device is in a vehicle, the application sets the default navigation mode to driving mode (as illustrated in this example). 
     In some embodiments, the map application uses a combination of the motion data that it receives through the motion sensors, and the distance to the desired destination in order to determine which navigation mode should be the default mode. For instance, in some embodiments, the application does not set the default mode to the pedestrian mode when the destination location is not within a threshold distance (e.g., two miles) from the current position of the user even if the motion data indicate that the user is walking Conversely, the application of some embodiments does not set the default mode to the driving mode when the destination location is within a threshold distance (e.g., 0.5 miles) from the current position of the user and the motion data indicate that the user is not driving. 
     The third stage also shows that for the displayed route, the map application provides information about the route in a display area  183 . For instance, in the driving mode, the display area  183  displays the driving distance and duration to the destination from the current location of the device. The third stage also shows that the route-overview presentation includes a start control  184  for starting a turn-by-turn navigation experience to the destination based on the currently selected navigation mode (e.g., driving mode, walking mode, or transit mode). For example, when the map application is displaying a transit route overview presentation in the transit mode, selection of the start control  184  directs the map application to start a transit navigation presentation that provides transit navigation directions from the device&#39;s current location to the destination. Navigating a transit route is described is great detail in the concurrently filed U.S. patent application Ser. No. 14/869,570, entitled “Transit Navigation”, which is incorporated herein by reference. 
     The third stage shows that the user selects the transit control  182  (e.g., by tapping on the tab  182 ) to change the navigation mode of the application from a driving navigation mode to transit navigation mode. Upon receiving this request, the map application of some embodiments identifies one or more transit routes to the specified destination, selects one of the identified transit routes as the best possible transit route based on a set of criteria, and displays the selected transit route  189 , as shown in the fourth stage  120 . 
     The map application of some embodiments, upon receiving a request to display a route in transit mode, identifies the best possible transit route among several different routes between two locations and displays the route to the user. Specifically, to identify the transit routes, the application of some embodiments examines trips that one or more transit vehicles of one or more transit systems make from locations nearby a specified starting location (e.g., the current location of the device) to locations near the specified destination. Based on this examination, the application identifies one or more transit routes that use one or more transit vehicles of one or more transit systems in some embodiments. 
     After identifying the transit routes, the map application then selects one of the identified transit routes based on a set of criteria (e.g., fastest route, shortest route, route with least amount of walking, route requiring least amount of transit vehicle changes, route requiring least amount of transit system changes, etc.), and displays this identified route over the map presentation in the presentation area  130 . In some embodiments, the selection criteria set relies on two or more selection parameters. Also, in some embodiments, the selection criteria set is different in different transit markets and/or in different time periods in the same transit market. 
     Although in the descriptions above and below, the map application is identified as the performer of actions such as identification and ranking of the transit routes, in some embodiments some or all of these actions are performed by a mapping service, which then provides the results to the map application. For instance, in some embodiments the identification of different transit routes and selection of the best possible route among the identified transit routes is done by a mapping service that runs on one or more dedicated servers. 
     The mapping service of some embodiments is the same mapping service that provides other map browsing and navigation data (e.g., routing data, traffic data, map tiles, etc.) to the map application. In some other embodiments, the mapping service is a designated service for providing transit data to the map application. The mapping service of some embodiments receives a request for transit routes, which includes the starting and destination locations. The service then identifies a set of available transit routes based on the user preferences, ranks the identified transit routes based on a set of criteria, and returns the ranked identified transit routes to the map application. The map application then displays the highest ranked transit route as the selected transit route in the transit navigation mode to the user. 
     In some embodiments, the application ranks the identified routes based on the set of criteria and some other factors. For instance, the application initially ranks the identified routes with the shortest transit route having the highest ranking. The application then requests for and receives real time incident (e.g., traffic) data for the identified routes (e.g., from a set of dedicated servers, from a designated incident curator that gathers incident data from different sources, etc.). Based on the received data, the application of some embodiments rearranges the routes and ranks them again for a second time. The application then displays the highest ranked (secondary ranked) transit route in the route presentation area. In some embodiments, as discussed above, a mapping service identifies and ranks the transit routes. In some such embodiments, the mapping service requests the real time incident data from dedicated servers in order to rank the transit routes. In some embodiments, the mapping service gathers and maintains the incident data directly (e.g., through an incident curator module of the mapping service). 
     The fourth stage  120  illustrates that the route  175  in the previous stage  115 , is now replaced by a transit route  189  as a result of selecting the transit navigation mode as the operational mode of the application. The preferred criterion in this example is the least amount of walking and therefore the transit route shown in the figure is selected as the best transit route because it includes the minimal walking distance between the departure point, the transit stations, and the destination point. 
     In addition to a predefined set of criteria, the application of some embodiments selects the best possible route based on a set of transit preferences set by a user. The user in some embodiments customizes the application by setting or adjusting a set of transit preferences provided by the map application. For instance, in some embodiments, a user may adjust the date and time of the departure to a particular date and time instead of the current time. In some embodiments, the user may prefer a particular type of transit vehicle (i.e., a transit vehicle of a particular transit system) over the other types. For example, the user might rather ride a subway train over a bus in a particular transit trip, or use only ground transportation for an entire transit route (e.g., a transit route that does not include a ferry trip). Customizing the transit routes is further described in the concurrently filed U.S. patent application Ser. No. 14/869,403, entitled “Map Application with Transit Navigation Mode”, which is incorporated herein by reference. 
     Some embodiments display the best route in its entirety over a portion of a map of a geographical area. Some such embodiments display the route in multiple sections each of which is traveled by a particular transit vehicle. In some embodiments, the map application uses different representations for different portions of a displayed transit route that are traveled by different transit vehicles or require walking. The displayed transit route in the fourth stage  120  includes two different portions  185  and  187 . The first portion (leg) of the transit route (i.e., the route portion  185 ) is traveled by a bus, while the second portion (i.e., the route portion  187 ) is traveled by a subway train. The two portions are displayed by two different graphical representations (e.g., a bus route representation for the bus portion and a rail representation for the train portion) to differentiate the bus and subway portions from each other. In the discussions below, a transit leg refers to a portion of a transit route that starts or ends with a transit maneuver that requires a transit vehicle change or a walking portion with a minimum threshold distance in a transit route. 
     In the illustrated example, two small walking portions  197  and  199  are also displayed. Specifically, the walking portion  197  represents the walking distance from the current location of the device (user)  196  to the first transit station (i.e., the first bus stop of the transit route). The second walking portion  199  represents the walking distance from the last transit station (i.e., the last subway station of the transit route) to the destination location. Although these walking portions are part of the path that the user of the device travels to reach the destination, as will be discussed in more detail below, they are not considered as separate legs of the transit route in some embodiments. Some such embodiments identify a walking portion of a transit route as a transit leg of the route only if the walking distance is equal to or more than a threshold length (e.g., more than half a mile, more than one mile, etc.). Any walking portions less than the threshold will not be identified as a walking leg of the transit route in these embodiments. 
     In some embodiments, the different types of transit vehicles that are presented by different graphical representations include buses, subway trains, rail trains (e.g., light rail trains and heavy rail trains), and ferries. Each of these four categories may include multiple different subcategories in some embodiments. For example, the bus category may include single-deckers, double-deckers, rigid buses, articulated buses, etc. that are provided by the same or different bus service providers. As another example, a light rail train may include many different types of city trains such as streetcars, trams, trolleys, etc. that are provided by the same or different light rail service providers. Additionally, the best route may include multiple transit vehicles of the same type (same transit system) in some embodiments. In such a case, each transit vehicle of the same transit system is distinguished from the other transit vehicles by a different line of the transit vehicle. For example a transit route may include three different bus legs that are serviced by three buses of three different bus lines. 
     The display area  183  of the third stage  115  is divided in the fourth stage  120  into two display areas  190  and  193 . The incident display area  190  currently shows the arrival time at the destination. However, this display area, as described in more detail below by reference to  FIG. 3 , is also for displaying various other transit information that can help the user to plan the transit trip more easily. A few examples of this additional transit information include (1) any incident that has occurred along the displayed transit route, (2) an incident that has occurred along another route which has caused the displayed route ranked better than the other route, (3) departure time or frequency of departures for the first leg of the transit route, and (4) departure frequency of the entire route. 
     The display area  193  is for displaying a route summary presentation for the displayed transit route. More specifically, this display area shows a different representation for each transit vehicle for each leg of the transit route along with the line of the transit vehicle. As illustrated in this example, the display area  193  currently shows a representation for a bus of the line  125  that travels the first leg of the transit route and a representation for a subway train of the line  166  that travels the second leg of the transit route. 
     Each representation for a transit vehicle, in the illustrated example, includes a logo that represents the type of the transit vehicle (e.g., a bus logo, a subway train logo, etc.), and a geometric shape that (1) includes the line of the transit vehicle and (2) is different for different types of transit vehicles (e.g., a rectangle for bus lines, an ellipse for subway lines, etc.). However, one of ordinary skill in the art would realize that the different types of transit vehicles could be represented in different embodiments differently. For example some embodiments provide different colors for the different representations to distinguish them from each other while other embodiments provide different graphical shapes that represent different types of transit vehicles. 
     The fourth stage  120  also shows a selectable More Routes control  195  for showing more routes. As discussed above, the displayed transit route is the best transit route that the application selects among a set of different routes based on a set of different criteria as well as a set of user preferences. Selecting the control  195  causes the application to show the other routes in the set of different routes in a separate display area, as will be discussed in further detail below by reference to  FIG. 5 . 
     As described above, the incident display area of the map application displays different useful transit information about a transit route that is selected and displayed to the user.  FIG. 2  conceptually illustrates a process  200  that the map application of some embodiments performs to determine what type of transit information should be displayed in the incident display area. 
     The process  200  begins by examining (at  205 ) the identified transit routes between a departure location and a destination location. As discussed above, after a user requests for transit routes between two specific locations, some embodiments identify one or more transit routes that each uses a combination of one or more transit vehicles from locations near the first specific location (e.g., current location of the user) to locations near the second specific location (e.g., a searched location). These embodiments then rank the identified transit routes based on a set of criteria (e.g., quickness of the route, shortness of the route, least number of change of transit vehicles, etc.). The embodiments then rearrange the transit routes based on a set of real time transit data received from one or more dedicated servers or through social media networks or other types of private and public networks. That is, before displaying the highest ranked transit route to the user, these embodiments request for traffic data (e.g., any potential incident) that can affect the identified routes. 
     Some embodiments rank the rearranged identified routes for the second time (a secondary ranking) and display the routes based on their new rankings. This secondary ranking, however, is temporary because it can change any time based on the traffic news that the application receives in real time, whereas the original ranking is considered as primary ranking because it does not change (unless and until the transit service providers update their transit data). Therefore, the process examines the identified transit routes to assess the rankings (e.g., primary and secondary) of the routes. Some embodiments do not use a primary and secondary ranking system. Some such embodiments use a single level ranking system in which all the information (different criteria, preferences, and incidents data) are gathered at the same time and the highest ranked transit based on the gathered information is displayed. 
     The process then determines (at  210 ) whether the route that is selected to be displayed in the route presentation area of the application is the best ranked route or not. When the process determines that a higher ranked route is not selected to be displayed, the process displays (at  215 ) the incident report of the higher ranked route as the reason for not selecting this route to be displayed to the user. For example, when a major accident delays a first transit route that is shorter than a second transit route that is selected to be displayed, the application shows a report about the accident as the reason for not showing the first route in the route display area. The process then ends. 
     On the other hand, when the process determines (at  210 ) that the highest ranked route is selected to be displayed, the process determines (at  220 ) whether there is any incident that could possibly delay the selected route. That is, the process examines the received traffic data related to the different legs of the selected route to realize whether there is any incident that could affect the traffic along these legs. When the process determines that there is no incident, the process displays (at  225 ) the arrival time (or estimated arrival time) at the destination in the incident display area. The process then ends. 
     On the other hand, when the process determines that there is an incident along the displayed route that could delay the route, the process displays (at  230 ) the incident report in the incident display area. It should be noted that the displayed incident here which has occurred along the displayed route is different than the incident shown at operation  215 . That is, the displayed incident here does not delay the route long enough to lower the ranking of the route and cause the route not to be displayed in the route presentation area. After showing the incident along the displayed route, the process ends. 
     Some embodiments perform variations of the process  200 . The specific operations of the process  200  may not be performed in the exact order shown and described. For example, in some embodiments, the same process is responsible for ranking the route and displaying the best route as well as displaying the incident report. In other embodiments, a different process ranks the best route and the above-described process is for displaying the best route as well as the incident report (or arrival time) in the incident display area. Additionally, the process of some embodiments displays the first transit line frequency or alternatively the transit route frequency instead of, or in conjunction with, the arrival time. 
     In some embodiments the application displays a text in the incident display area that informs the user of a gap (that is more than a threshold distance) between two consecutive transit legs of the transit route. In yet other embodiments, the application displays the first transit line frequency, or the route frequency, along with any of the incident reports or arrival time. Additionally, the specific operations may not be performed in one continuous series of operations, and different specific operations may be performed in different embodiments. 
       FIG. 3  illustrates the incident display area  190  displaying three different messages, in three different examples  305 - 315 , for three different conditions related to the displayed transit route. The incident display area  190  of the map application of some embodiments describes why the currently displayed route is selected as the best route by the map application when the settings in the predefined set of criteria and the user preferences dictated otherwise. This display area also shows a report about any incident occurred along the currently displayed route. In some embodiments, the incident display area  190  displays the estimated time of arrival at the destination (e.g., the searched location) when (1) there is no specific reason for selecting the currently displayed route as the best route other than the settings in the predefined set of criteria and the user preferences, and (2) there is no incident occurred along the currently displayed route. 
     In some embodiments, the map application, or a map service that exchange the transit route and other traffic and map data with the map application), receives the live incidents information from a set of servers in real time. In some embodiments, the incidents information includes information about accidents, weather, construction work, etc. that are related to one or more legs of the transit route. The incidents information can be complemented by information received from online user accounts and/or through social media websites in some embodiments. In some embodiments the information received from the different sources are first verified by a set of servers and then used by the map application. 
     The first example  305  shows the UI  100  in a similar state as in the stage  120  of  FIG. 1  with the same starting and destination locations shown on the same map presentation. However, the combination of transit vehicles that the transit route uses in the figure is different. More specifically, the map presentation area  130  in this example shows that the transit route includes five different legs that are depicted by five bus route representations  325 - 345 . Although the representation for each portion of the transit route is similar to the other representations, the representation for each portion is separated from the other representations because each bus in the illustrated example belongs to a different bus line. Each portion of the transit route is connected to the other portion by a walking portion that is presented by walk representations  320 . 
     The first example  305  also shows the route summary display area  193  displaying different representations for different transit vehicles of different lines. As shown, the display area  193  displays a bus of the line  125  that travels along the route presentation  325 , a bus of the line  236  that travels along the route presentation  330 , a bus of the line  512  that travels along the route presentation  335 , and a bus of the line  925  that travels along the route presentation  340 . Although the last leg of the transit route (i.e., the bus that travels along the route representation  345 ) is not shown in this example, as it will be discussed below, a user can scroll (e.g., by swiping) through the display area  193  to view the rest of the information. It is also important to note that since the walking distances between the different transit vehicle stations (the bus stops in this figure) are shorter than a threshold distance, there is no walking representation in between the transit vehicle representations in this display area. The display area  193  also displays that the total travel time is 45 minutes and the total walking distance to reach the destination is 0.6 miles. 
     The first example  305  further shows that the incident display area  190  displays that the Grand Station is currently closed. Similar to display area  193 , the incident display area  190  is scrollable in some embodiments and a user can scroll through this display area to view the rest of the information about the incident. A user, by looking at the incident display area, can quickly realize that although a transit route that includes the Grand Station could be shorter than the currently displayed route, because the Grand station is now closed, the application has selected the second best route as the currently displayed route (even though it has more changes of transit vehicles and more total travel distance and total travel time). 
     The second example  310  shows that the incident display area  190  displays that an accident is delaying a bus line (e.g., the bus line  125  depicted in the fourth stage of  FIG. 1 ) and therefore a different route is selected and shown in the map presentation area as the best current transit route. As shown in the map presentation area  130 , the best identified transit route now includes two different bus legs  355  and  365 , a walking leg  360 , and a subway leg  370 . This is also displayed in the route summary display area  193  which displays a bus representation for the bus of the line  56  that travels the leg  355 , a walking person representation for the walking leg  360 , a bus representation for the bus of the line  166  that travels the leg  365 , and a subway train representation that travels the leg  370  of the transit route (from subway line  166 ). This display area also shows that the total trip time is now 58 minutes which involves 0.9 miles of walking in total. 
     The third example  315  shows that the incident display area  190  displays the bus transit authority is currently on a strike and as a result no bus of any line is available to participate in a transit route. Consequently, the best transit route at the moment is the transit route that is drawn over the map presentation in the map presentation area. As shown in the map presentation area  130 , the best identified transit route between the same starting location and destination location now includes a walking leg  375  and a subway leg  380 . This is also displayed in the route summary display area  193  which displays a walking person representation for the walking leg  375  and a subway train representation that travels the leg  380  of this transit route. The display area  193  in this example also shows that the total trip time is now 1 hour and 45 minutes which involves a total walking distance of 2.2 miles. 
     The above examples are only three examples of messages that some embodiments of the invention display in the incident display area. One of ordinary skill in the art will realize that there can be many other forms of messages that can be shown by other embodiments. For example, some embodiments display, in the incident display area, a message that warns the user of a gap between two consecutive legs of the transit route. That is, some such embodiments display a message in this display area when the embodiments determine that between a last transit station of a transit leg and the first transit station of the next transit leg there is a gap (e.g., a distance that is more than a threshold) that is not traveled by any transit vehicle of any transit line for which the embodiments have transit data. 
       FIG. 4  illustrates how a user can scroll through the different display areas of a map application UI in order to view the whole information provided in these display areas. More specifically, this figure shows a user scrolling through the incident display area  190  and the route summary display area  193  in four different stages  405 - 420 . The user scrolls through these display areas to view the rest of the information that does not fit in the display screen of the device In some embodiments a user can swipe through the information by contacting the display area (e.g., touching the display area on the touch-sensitive display screen of the device by user&#39;s finger), in which the displayed information is incomplete, and dragging the user&#39;s finger to the left for the display area to scroll to the left and appearance of the rest of the content, or alternatively, dragging the finger to the right for the display area to scroll to the right. 
     The first stage  405  shows the same UI of the map application as in the first stage  305  of  FIG. 3 , in which the incident display area  190  displayed incomplete information (i.e., “Grand Station closed because of . . . ”). At stage  405 , however, the user is swiping through the display area to read the rest of the information. That is, the user is swiping the user&#39;s finger on the display area to the left in order to scroll the content in from the right and view the rest of the information. The next stage  410  shows that the display area  190  now displays the rest of the information to the user. More specifically, this stage shows that the incident display area displays the remaining portion of the incident report, which states the reason for closure of the Grand Station (i.e., a shooting has occurred at the Grand Station). Some embodiments rather than scrolling through the incident information, use multiple lines to display all the incident information at once. 
     The third stage  415  shows the same UI of the map application as in the first stage  405 . However, at this stage, instead of swiping through the incident display area  190 , the user is swiping through the route summary display area  193  to show the rest of the route summary. That is, the user is swiping the user&#39;s finger on the display area to the left in order to scroll the content in from the right and view the rest of the information. As described in the previous figure, while five different transit vehicle representations are shown on the map presentation, the route summary display area can only fit in four of the bus representations that cover the first four routes drawn on the map presentation. The next stage  420  shows that the display area  193  now displays the rest of the route summary which includes a bus line representation for the last leg ( 345 ) of the trip. 
     As described above, upon receiving a request for transit navigation mode, the map application of some embodiments identifies one or more transit routes to the specified destination, selects one of the identified transit routes as the best possible transit route based on a set of criteria, and displays the selected transit route. The identification of transit routes and selection of the best route, as described, is performed by a mapping service that provides map and transit data to the map application in some embodiments. To identify the transit routes, the application of some embodiments examines trips that one or more transit vehicles of one or more transit systems make from locations nearby the current device&#39;s location to locations near the specified destination. Although the map application identifies and displays the best route among several identified routes, the user of the map application of some embodiments is able to view and select the other identified routes as well. In some embodiments, the user can change the best displayed route with one of the other identified transit routes between the starting location and the destination location. 
       FIG. 5  illustrates in terms of four operational stages  505 - 520  of the map application UI  100 , a user selecting the More Routes control  195  to view the other identified transit routes between the current location of the device and the destination location. The first stage  505  shows the same map application UI of the second example  310  of  FIG. 3  except that in this stage  505 , the user is selecting the More Routes control  195  (e.g., by tapping on the UI control  195 ). This stage shows that the incident display area  190  displays that an accident is delaying a bus line (e.g., the bus line  125  depicted in the fourth stage of  FIG. 1 ) and therefore the currently displayed route is selected as the best transit route at the moment. 
     The second stage  510  illustrates that selection of the control  195  directs the map application to provide a separate display area  550  in order to display the additional identified transit routes. As described above, the identified available transit routes in some embodiments are ranked based on a set of criteria (e.g., the quickest route, the shortest route, etc.) and the initially displayed route is the highest ranked transit route among the identified routes. In the illustrated example, the criterion of ranking the transit routes is the shortest trip duration. Therefore, in this example, the displayed route is a transit route with trip duration of 58 minutes. 
     After selection of the control  195 , the second stage  510  shows that the more routes display area  550  now displays two additional route summary presentations besides the initially displayed route summary presentation that was displayed in the first stage. This stage also shows that the incident report  580  is shown at the top of the display area and before the route summary presentation. In some embodiments, the incident report shown in the more routes display area is a more complete version of the incident report displayed in the route planning display area (i.e., the route presentation display area  130  of the first stage). As illustrated, the route summary now shows that the accident has occurred in the bus leg (bus line  125 ) of the second transit route and consequently this transit route, because of the delay, is now the second best route among the identified routes. 
     The three transit route summary presentations are shown in the more routes display area  550  based on their rankings (i.e., sorted from the shortest trip duration to the longest trip duration). Although not shown, some embodiments display additional information in the display area  550  for each route summary presentation. For example, some embodiments display, in front of route summary presentation, departure time or frequency of departures of the first transit line in the corresponding route summary. Alternatively, or conjunctively, some such embodiments display the departure frequency of the entire route for each route summary. Other embodiments display other information such as an incident report for each route summary (if there is any). 
     The second stage  510  also shows two more selectable UI controls which are the Leave Now UI control  530  and Custom UI control  540 . This stage further shows a More Routes control  195  that is displayed at the end of the current route summary presentations. Selection of the Leave Now UI control  530  in some embodiments directs the map application to (1) change all the customized temporal settings to the current date and time and (2) return to displaying the UI of the map application in the first stage  505 . In some other embodiments, selection of the UI control  530  directs the map application to only change all the customized temporal settings to the current date and time. Selection of the Custom UI control  540  directs the map application of some embodiment to provide a custom display area for customizing a set of transit preferences in transit route selection which is described in the concurrently filed U.S. patent application Ser. No. 14/869,403, entitled “Map Application with Transit Navigation Mode”. 
     In some embodiments, the map application provides a More Routes UI control  195  in the display area  550  after it shows a specific number of transit routes in this display area (e.g., after each three transit routes). This stage also shows that the user selects the UI control  195  to view even more identified routes. The third stage  515  shows that as a result of selection of the control  195  in the more routes display area  550 , two more available route summary presentations with lower rankings (i.e., higher trip duration) are displayed in the display area  550 . This stage also shows that the user scrolls the display area up to show additional transit routes that did not fit in the display screen of the device. 
     The fourth stage  520  shows that the display area is scrolled up and is now displaying all the three new transit route summary presentations. This stage also shows that at the end of the displayed transit routes, the More Routes control  195  is displayed again for viewing the next additional transit routes (if any). This stage also shows that the incident report  580  is not displayed in the more routes display area as a result of scrolling the route summaries. However, in some embodiments, the incident report  580  always stays on top of the more routes display area even after scrolling the transit routes. Some embodiments display three additional routes each time the control  195  is selected. Moreover, although not shown, some embodiments provide additional selectable UI controls for interaction with the displayed route summaries. For example, some embodiments display a Share control next to each route summary presentation for sharing the corresponding route summary with one or more other persons. 
       FIG. 6  illustrates an example of replacing a displayed transit route with another identified route between the current location of the device and a destination location. More specifically, this figure shows, through four operational stages  605 - 620  of the map application UI  100 , a user selecting the More Routes control  195  to view the other identified transit routes between the two locations and selecting one of the other available transit routes to replace the currently selected and displayed transit route. 
     The first and second stages  605  and  610  are identical to the first and second stages  505 - 510  of  FIG. 5 . More specifically, the first and second stages  605  and  610  show that the user selects the More Route control  195  to view the other identified transit routes and upon selection of this control, the map application provides the more routes display area  550  which displays the initially displayed transit route summary presentation  630  along with two additional transit route summary presentations  640  and  650 . The three transit routes, as described above, are ranked and sorted based on the total duration of the trip in each transit route. Also the incident report in the display area  550  shows that the second route  640  which could have been the best route is delayed because of an accident and as such it is ranked second now in the list. 
     The third stage  615  shows that the user selects the transit route summary presentation  640  (e.g., by tapping on the route summary presentation  640 ) even though the incident report is showing an accident along the bus line  125  of that transit route. As a result, the fourth stage  620  shows that the originally displayed route  630  that was displayed in the map presentation area  130 , is now replaced by the selected route  640  which includes a bus route representation  660  and a subway route representation  670 . This stage also shows that the information in the route summary display area  193  is updated with the information of the newly selected route. That is, the display area  193  now displays the total trip duration as 1 hour and 35 minutes, which includes 0.2 miles of walking. 
     In some embodiments, the incidents are characterized as either blocking incidents or non-blocking incidents. Some embodiments categorize an incident as a blocking incident when the incident causes the route, to which the incident is attached, almost unusable. For example when a construction work has caused a portion of a transit route to be shut down, that construction work would be characterized as a blocking incident. Some such embodiments categorize the incident as a blocking incident, when the incident causes the transit leg to which it is attached (i.e., along which it has occurred) unusable for more than a threshold amount of time. 
     When a blocking incident is attached to a transit leg of a particular transit route, that particular transit route cannot be selected to replace a currently selected and displayed transit route. In other words, when a blocking incident has occurred along a particular identified transit route between two locations, even though the particular route is displayed to the user as one of the identified routes (e.g., in form of a route summary presentation), the route cannot be selected by the user to replace another selected route. For instance, in the above illustrated example, if the accident that caused the delay for bus line  125  was a type of accident that made the bus route unusable for a long time (e.g., more than a threshold period of time) the incident would be characterized as a blocking incident, in which case the user was not able to select the route in the third stage even though its corresponding route summary presentation was among the other identified route summaries. 
     Conversely, when a non-blocking incident is attached to a transit route (i.e., to a transit leg of the transit route) the transit route is still selectable and can replace the currently selected and displayed transit route. In the illustrated example, the accident along the bus route is a non-blocking incident and as such the user was able to select it to replace the originally selected transit route. 
     Lastly, the incident display area  190  is not updated because in the first stage, this display area was showing the same incident report as the reason for not displaying the route  640  as the best route in the first stage  605 . In other words, in the first stage, the incident report showed the accident along the bus line  125  to indicate the reason for not choosing the transit route that included this bus line as one of its transit legs, while in the fourth stage, the incident report shows the same accident along the bus line  125  to indicate that the currently displayed route is delayed because of this accident. 
       FIG. 7  illustrates another example of replacing a displayed transit route with a second different route between the current location of the device and a destination location. Specifically, this figure shows, through four operational stages  705 - 720  of the map application UI  100 , a user selecting the More Routes control  195  to view the other identified transit routes between the two locations and selecting one of the other available transit routes to replace the currently selected and displayed transit route. The originally selected and displayed transit route does not include any incident (e.g., accident, road work, etc.) along any one of its transit legs, while the newly selected route (from the additional routes display area) includes an accident along one of its transit legs. 
     The first stage  705  shows a similar UI of the map application to the UI  100  shown in the fourth stage  620  of  FIG. 6 . However, the displayed UI in this stage is displaying the transit route at a different time. Specifically, in the previous example, because of an accident along the displayed transit route  640  around 1:20 in the afternoon, the route had not been originally selected to be displayed and instead route  630  was shown as the best selected route in the first stage of  FIG. 6 . In the first stage  705  of  FIG. 7  though, the time is 10:15 in the morning and since there is no accident along the originally best identified route (i.e., route  730 ), this transit route is shown to the user in the map presentation display area  130 . Additionally, the incident display area  190  shows the arrival time at the destination (10:55 AM) and the route summary display area shows a representation of transit lines that are used for this route. The first stage of this figure also shows that the user selects the More Route UI control  195  to view the other identified transit routes. 
     The second stage  710  shows that, upon selection of the UI control  195 , the map application provides the additional routes display area  550  which displays the initially displayed transit route summary presentation  730  along with two additional transit route summary presentations  740  and  750 . The three transit routes, as described above, are ranked and sorted based on the total duration of the trip in each transit route. That is, the route summary presentation  740  with a total trip duration of 1 hour and fifteen minutes is ranked and displayed as the second available transit route after the route summary presentation  730 , and the route summary presentation  750  with a total trip duration of 1 hour and fifty six minutes is ranked and displayed as the third and last available route in the more route display area  550 . 
     The second stage  710  additionally shows that there is an incident (i.e., an accident that delays bus line  244 ) along one of the transit legs of this route for which an incident report  770  is displayed under the route summary presentation  740 . That is, some embodiments (as in the previous example) show the incident report at the top of additional routes display area  550 , while other embodiments (as in the example of this figure) display each incident related to a particular transit route, under the route summary presentation of that particular route. In some embodiments, the incident report displayed under the route summary is selectable, and when the user selects the displayed incident (e.g., by tapping on the incident), the application opens a new display area that displays a detailed report about the selected incident. The new detailed incident display area partially covers the additional routes display area in some embodiments. In some other embodiments, the full incident display area replaces the more routes display area. 
     The third stage  715  shows that the user selects the transit route summary presentation  740  (e.g., by tapping on the route summary presentation  740 ), even though this transit route is not the fastest transit route at the moment. As a result, the fourth stage  720  shows that the originally displayed route  730  that was displayed in the map presentation area  130 , is now replaced by the selected route  740 , which includes two bus route representations and one subway route representation for the bus legs and subway leg of the transit trip respectively. This stage further shows that the information in the route summary display area  193  is updated with the information of the newly selected route. That is, the display area  193  now displays the total trip duration as 1 hour and 35 minutes, which includes 0.6 miles of walking. 
     Additionally the incident display area  190  at the fourth stage  720  displays an incident report instead of the originally shown arrival time at the destination. This is because the map application (or a corresponding map service application that provides all the map and incident data to the map application) has received the incident data (e.g., from the a set of dedicated servers that provide incident information along the different transit routes) for this route which indicates that there is an accident along a bus line (i.e., bus line  244 ) which has resulted in a delay in the total trip time for this transit route. This stage also shows that a geometric shape (e.g., a triangle that resembles a traffic sign)  760  is displayed next to the incident report in the incident report display area  190 , as well as on top of the bus line  244  representation (that partially covers the bus line representation) in the route summary presentation area  193 . Some embodiments display this geometric shape on the transit vehicle representation in the route summary presentation (an other places) to draw the user&#39;s attention to the existence of an incident along the selected and displayed transit route. 
     In some embodiments, a mapping service provides the incident reports (data) to the map application. In some embodiments the mapping service is the same mapping service that provides the different mapping data (e.g., road data, traffic data, etc.) and routing data to the map application. The mapping service of some embodiments uses an incident curator module that gathers all the incident data from different sources (e.g., dedicated servers, social media, individual users, etc.) and stores the received data along with several other modules to generate different transit routes to be used by the map application. 
       FIG. 8  conceptually illustrates a mapping service  805  that gathers different incident data (e.g., through an incident curator and incidents storage) and uses this data in order to generate incident reports and transit routes. The mapping service  805  includes an incidents storage  810 , a transit data storage  820 , a map tiles storage  830 , an incident curator  840 , a route generator  850 , a map retriever  860 , and a user device interface  870 . One of ordinary skill in the art would realize that each of the illustrated modules may include various different sub-modules that each performs a different function for the module. Similarly, each storage shown in this example may include several different storages that each stores a different category and/or type of mapping and routing data. The illustrated modules and storages are exemplary and can be different in different embodiments. 
     The incident curator  840  receives different real time incident data for different transit lines and/or stations of an area from different sources  880 . In some embodiments, the incident data includes information about accidents, weather, construction work, etc. that can affect the transit lines and/or stations of an area. The different sources  880  of incident data in some embodiments may include one or more dedicated servers that store the incident data, social media networks (e.g., Facebook, Twitter, etc.), individual users who are authorized to generate and provide such data, national and/or local weather services, or other types of private and/or public networks. The incident curator  840  of some embodiments then stores the received incident data in an incidents storage  810 . 
     In some embodiments the curator  840  first organizes the received data into different categories and then stores the categorized information in the storage  840 . The data structure of the incidents storage  810  is further described below by reference to  FIG. 9 . Additionally, in some embodiments the incident curator  840  continually or periodically checks for new incident data from different sources and stores and/or updates the received data in the incidents storage  810 . In some embodiments, the curator  840  purges the incidents storage  810  periodically in order to ensure that the incident data stored in the storage is the latest updated incident data. 
     When the mapping service receives a request for transit routes between two particular locations (e.g., from a map application), the route generator  850  tries to identify one or more transit routes between the two locations based on the transit route data stored in the transit data storage  820 . When the route generator identifies a set of transit routes that can be used between the two locations, the route generator  850  checks the incidents storage  810  for any potential incidents that relate to the set of identified routes. That is, the route generator checks for any related incident that may affect one or more legs of the identified set of transit routes. 
     The route generator  850  of some embodiments then uses the incident data to rank the identified routes in set of transit routes and send them to the user device interface  870  to be sent to the requestor (e.g., the map application that requested for the transit routes). In some other embodiments, the route generator  850  sends the identified set of routes along with the related incident data to the map application that requested the routes (through the user device interface) and the map application ranks the routes based on the incident data it has received. As described above, in some embodiments, the transit routes are further ranked (e.g., by the map application or the route generator  850 ) based on a particular set of criteria (e.g., fastest route, shortest route, etc.). In some such embodiments, the combination of the set of criteria and the incidents determine the ranking of the different transit routes. 
     The user device interface  870  of some embodiments receives the identified set of transit routes from the route generator  850  and the map retriever  860  and sends these information to the user devices  890  to be used by different applications running on these devices such as the map applications. The map retriever  860  of some embodiments, upon receiving a request for a map (e.g., a transit map) of a region, retrieves the related map tiles for that region from the map tiles storage  830  and sends the retrieved map tiles to the requestor through the user device interface  870 . 
     In some embodiments, the map retriever, after retrieving the related map tiles, checks the incidents storage  810  for any potential incidents related to the retrieved map tiles of the map region. The map retriever of some such embodiments then sends the map tiles along with the incident data to the requestor (e.g., a map application). Requesting for transit maps and displaying different transit maps of different regions along with incident reports are further described in the U.S. patent application Ser. No. 14/545,680, entitled “Display of Transit Features in Mapping Application”, filed Jun. 6, 2015, which is incorporated herein by reference. 
     One of ordinary skill in the art will recognize that the above-described data storages are merely representative of the manners in which the different modules of the mapping service could retrieve the needed data (e.g., incident data, map tiles, etc.). In some embodiments, the map application that runs on a device  890  first checks a cache, and if the data that the application needs is not found in the cache then sends a request to the mapping service for the needed data (i.e., tiles, routes, incidents, etc.). 
       FIG. 9  conceptually illustrates a data structure (e.g., a table, a data source, etc.) of the incident database storage that is described above by reference to  FIG. 8 . As described above, the database storage  910  stores different types of incident data that can affect different transit lines and/or stations located in a particular area (e.g., a city, a county, etc.). The data structure of the stored data in some embodiments is displayed as the incident data structure  920  in this figure. The incident data structure of some embodiments, as illustrated in the figure, includes a source  940  of the incident, a description  950  of the incident, a type  960  of the incident, and the affected lines and/or stations  970  by the incident. The displayed structure is exemplary and the incident data structure of different embodiments may include different numbers of other fields. Additionally, each one of the fields shown in the incident data structure  920  may relate to one or more other fields of a different data structure (e.g., a table, a data source, etc.). 
     For example, the affected lines/stations field  970  of the incident data structure  920  of some embodiments may be associated with a location  971 , a time  973 , and a type of effect  975 . In some embodiments, the source  940  of an incident identifies from what source the incident curator has received the incident and stored it in the incidents storage  910 . For instance a source of an incident can be a social media, a weather service, an incident server, an authorized individual, etc. The description  950  of an incident, in some embodiments, specifies how the incident will be shown by the map application. For instance, the description could be a text line that describes an accident along a specific line (e.g., “an accident delays the bus line X,” etc.), a public announce of a road closure, a construction work announcement, etc. 
     The type  960  of an incident as its name suggests specifies the type of incident (e.g., construction, accident, inclement weather, etc.) in some embodiments, and the affected lines/stations  970  specifies one or more transit lines and/or transit stations that are affected by the incident. Each line and/or station can be further categorized with the location of the incident, the time at which the incident has occurred, the type of effect that the incident has caused, etc. For example when there is an accident along a transit line, the location  971  shows the exact location of the accident along the transit line, the time  973  identifies the delay time that the accident may cause, and the effect type  971  specifies what type of delay the accident has caused for the transit line (e.g., closure, slowing down, etc.). 
     Many of the above-described features and applications are implemented as software processes that are specified as a set of instructions recorded on a computer readable storage medium (also referred to as computer readable medium). When these instructions are executed by one or more computational or processing unit(s) (e.g., one or more processors, cores of processors, or other processing units), they cause the processing unit(s) to perform the actions indicated in the instructions. Examples of computer readable media include, but are not limited to, CD-ROMs, flash drives, random access memory (RAM) chips, hard drives, erasable programmable read-only memories (EPROMs), electrically erasable programmable read-only memories (EEPROMs), etc. The computer readable media does not include carrier waves and electronic signals passing wirelessly or over wired connections. 
     In this specification, the term “software” is meant to include firmware residing in read-only memory or applications stored in magnetic storage which can be read into memory for processing by a processor. Also, in some embodiments, multiple software inventions can be implemented as sub-parts of a larger program while remaining distinct software inventions. In some embodiments, multiple software inventions can also be implemented as separate programs. Finally, any combination of separate programs that together implement a software invention described here is within the scope of the invention. In some embodiments, the software programs, when installed to operate on one or more electronic systems, define one or more specific machine implementations that execute and perform the operations of the software programs. 
     The applications of some embodiments operate on mobile devices, such as smart phones (e.g., iPhones®) and tablets (e.g., iPads®).  FIG. 10  illustrates an example of an architecture  1000  of such a mobile computing device. As shown, the mobile computing device  1000  includes one or more processing units  1005 , a memory interface  1010  and a peripherals interface  1015 . 
     The peripherals interface  1015  is coupled to various sensors and subsystems, including a camera subsystem  1020 , a wired communication subsystem(s)  1023 , a wireless communication subsystem(s)  1025 , an audio subsystem  1030 , an I/O subsystem  1035 , etc. The peripherals interface  1015  enables communication between the processing units  1005  and various peripherals. For example, an orientation sensor  1045  (e.g., a gyroscope) and an acceleration sensor  1050  (e.g., an accelerometer) is coupled to the peripherals interface  1015  to facilitate orientation and acceleration functions. 
     The camera subsystem  1020  is coupled to one or more optical sensors  1040  (e.g., a charged coupled device (CCD) optical sensor, a complementary metal-oxide-semiconductor (CMOS) optical sensor, etc.). The camera subsystem  1020  coupled with the optical sensors  1040  facilitates camera functions, such as image and/or video data capturing. The wired communication subsystem  1023  and wireless communication subsystem  1025  serve to facilitate communication functions. 
     In some embodiments, the wireless communication subsystem  1025  includes radio frequency receivers and transmitters, and optical receivers and transmitters (not shown in  FIG. 10 ). These receivers and transmitters of some embodiments are implemented to operate over one or more communication networks such as a GSM network, a Wi-Fi network, a Bluetooth network, etc. The audio subsystem  1030  is coupled to a speaker to output audio (e.g., to output voice navigation instructions). Additionally, the audio subsystem  1030  is coupled to a microphone to facilitate voice-enabled functions in some embodiments. 
     The I/O subsystem  1035  involves the transfer between input/output peripheral devices, such as a display, a touch screen, etc., and the data bus of the processing units  1005  through the peripherals interface  1015 . The I/O subsystem  1035  includes a touch-screen controller  1055  and other input controllers  1060  to facilitate the transfer between input/output peripheral devices and the data bus of the processing units  1005 . As shown, the touch-screen controller  1055  is coupled to a touch screen  1065 . The touch-screen controller  1055  detects contact and movement on the touch screen  1065  using any of multiple touch sensitivity technologies. The other input controllers  1060  are coupled to other input/control devices, such as one or more buttons. Some embodiments include a near-touch sensitive screen and a corresponding controller that can detect near-touch interactions instead of or in addition to touch interactions. 
     The memory interface  1010  is coupled to memory  1070 . In some embodiments, the memory  1070  includes volatile memory (e.g., high-speed random access memory), non-volatile memory (e.g., flash memory), a combination of volatile and non-volatile memory, and/or any other type of memory. As illustrated in  FIG. 10 , the memory  1070  stores an operating system (OS)  1071 . The OS  1071  includes instructions for handling basic system services and for performing hardware dependent tasks. The memory  1070  additionally includes layout rearranging instructions  1072  in order for the device  1000  to perform the layout rearranging process of some embodiments. In some embodiments, these instructions  1072  may be a subset of the operating system instructions  1071 , or may be part of the instructions for an application. 
     The memory  1070  also includes communication instructions  1074  to facilitate communicating with one or more additional devices (e.g., for peer-to-peer data sharing, or to connect to a server through the Internet for cloud-based data sharing); graphical user interface instructions  1076  to facilitate graphic user interface processing; image processing instructions  1078  to facilitate image-related processing and functions; input processing instructions  1080  to facilitate input-related (e.g., touch input) processes and functions; audio processing instructions  1082  to facilitate audio-related processes and functions; and camera instructions  1084  to facilitate camera-related processes and functions. The instructions described above are merely exemplary and the memory  1070  includes additional and/or other instructions in some embodiments. For instance, the memory for a smartphone may include phone instructions to facilitate phone-related processes and functions. The above-identified instructions need not be implemented as separate software programs or modules. Various functions of the mobile computing device can be implemented in hardware and/or in software, including in one or more signal processing and/or application specific integrated circuits. 
     While the components illustrated in  FIG. 10  are shown as separate components, one of ordinary skill in the art will recognize that two or more components may be integrated into one or more integrated circuits. In addition, two or more components may be coupled together by one or more communication buses or signal lines. Also, while many of the functions have been described as being performed by one component, one of ordinary skill in the art will realize that the functions described with respect to  FIG. 10  may be split into two or more integrated circuits. 
       FIG. 11  conceptually illustrates another example of an electronic system  1100  with which some embodiments of the invention are implemented. The electronic system  1100  may be a computer (e.g., a desktop computer, personal computer, tablet computer, etc.), phone, PDA, or any other sort of electronic or computing device. Such an electronic system includes various types of computer readable media and interfaces for various other types of computer readable media. Electronic system  1100  includes a bus  1105 , processing unit(s)  1110 , a graphics processing unit (GPU)  1115 , a system memory  1120 , a network  1125 , a read-only memory  1130 , a permanent storage device  1135 , input devices  1140 , and output devices  1145 . 
     The bus  1105  collectively represents all system, peripheral, and chipset buses that communicatively connect the numerous internal devices of the electronic system  1100 . For instance, the bus  1105  communicatively connects the processing unit(s)  1110  with the read-only memory  1130 , the GPU  1115 , the system memory  1120 , and the permanent storage device  1135 . 
     From these various memory units, the processing unit(s)  1110  retrieves instructions to execute and data to process in order to execute the processes of the invention. The processing unit(s) may be a single processor or a multi-core processor in different embodiments. Some instructions are passed to and executed by the GPU  1115 . The GPU  1115  can offload various computations or complement the image processing provided by the processing unit(s)  1110 . In some embodiments, such functionality can be provided using Corelmage&#39;s kernel shading language. 
     The read-only-memory (ROM)  1130  stores static data and instructions that are needed by the processing unit(s)  1110  and other modules of the electronic system. The permanent storage device  1135 , on the other hand, is a read-and-write memory device. This device is a non-volatile memory unit that stores instructions and data even when the electronic system  1100  is off. Some embodiments of the invention use a mass-storage device (such as a magnetic or optical disk and its corresponding disk drive, integrated flash memory) as the permanent storage device  1135 . 
     Other embodiments use a removable storage device (such as a floppy disk, flash memory device, etc., and its corresponding drive) as the permanent storage device. Like the permanent storage device  1135 , the system memory  1120  is a read-and-write memory device. However, unlike storage device  1135 , the system memory  1120  is a volatile read-and-write memory, such a random access memory. The system memory  1120  stores some of the instructions and data that the processor needs at runtime. In some embodiments, the invention&#39;s processes are stored in the system memory  1120 , the permanent storage device  1135 , and/or the read-only memory  1130 . For example, the various memory units include instructions for processing multimedia clips in accordance with some embodiments. From these various memory units, the processing unit(s)  1110  retrieves instructions to execute and data to process in order to execute the processes of some embodiments. 
     The bus  1105  also connects to the input and output devices  1140  and  1145 . The input devices  1140  enable the user to communicate information and select commands to the electronic system. The input devices  1140  include alphanumeric keyboards and pointing devices (also called “cursor control devices”), cameras (e.g., webcams), microphones or similar devices for receiving voice commands, etc. The output devices  1145  display images generated by the electronic system or otherwise output data. The output devices  1145  include printers and display devices, such as cathode ray tubes (CRT) or liquid crystal displays (LCD), as well as speakers or similar audio output devices. Some embodiments include devices such as a touchscreen that function as both input and output devices. 
     Finally, as shown in  FIG. 11 , bus  1105  also couples electronic system  1100  to a network  1125  through a network adapter (not shown). In this manner, the computer can be a part of a network of computers (such as a local area network (“LAN”), a wide area network (“WAN”), or an Intranet), or a network of networks, such as the Internet. Any or all components of electronic system  1100  may be used in conjunction with the invention. 
     Some embodiments include electronic components, such as microprocessors, storage and memory that store computer program instructions in a machine-readable or computer-readable medium (alternatively referred to as computer-readable storage media, machine-readable media, or machine-readable storage media). Some examples of such computer-readable media include RAM, ROM, read-only compact discs (CD-ROM), recordable compact discs (CD-R), rewritable compact discs (CD-RW), read-only digital versatile discs (e.g., DVD-ROM, dual-layer DVD-ROM), a variety of recordable/rewritable DVDs (e.g., DVD-RAM, DVD-RW, DVD+RW, etc.), flash memory (e.g., SD cards, mini-SD cards, micro-SD cards, etc.), magnetic and/or solid state hard drives, read-only and recordable Blu-Ray® discs, ultra density optical discs, any other optical or magnetic media, and floppy disks. The computer-readable media may store a computer program that is executable by at least one processing unit and includes sets of instructions for performing various operations. Examples of computer programs or computer code include machine code, such as is produced by a compiler, and files including higher-level code that are executed by a computer, an electronic component, or a microprocessor using an interpreter. 
     While the above discussion primarily refers to microprocessor or multi-core processors that execute software, some embodiments are performed by one or more integrated circuits, such as application specific integrated circuits (ASICs) or field programmable gate arrays (FPGAs). In some embodiments, such integrated circuits execute instructions that are stored on the circuit itself. In addition, some embodiments execute software stored in programmable logic devices (PLDs), ROM, or RAM devices. 
     As used in this specification and any claims of this application, the terms “computer”, “server”, “processor”, and “memory” all refer to electronic or other technological devices. These terms exclude people or groups of people. For the purposes of the specification, the terms display or displaying means displaying on an electronic device. As used in this specification and any claims of this application, the terms “computer readable medium,” “computer readable media,” and “machine readable medium” are entirely restricted to tangible, physical objects that store information in a form that is readable by a computer. These terms exclude any wireless signals, wired download signals, and any other ephemeral signals. 
     While the invention has been described with reference to numerous specific details, one of ordinary skill in the art will recognize that the invention can be embodied in other specific forms without departing from the spirit of the invention. For instance, a number of the figures (including  FIG. 2 ) conceptually illustrate processes. The specific operations of these processes may not be performed in the exact order shown and described. The specific operations may not be performed in one continuous series of operations, and different specific operations may be performed in different embodiments. Furthermore, the process could be implemented using several sub-processes, or as part of a larger macro process. Thus, one of ordinary skill in the art would understand that the invention is not to be limited by the foregoing illustrative details, but rather is to be defined by the appended claims. 
     Various embodiments may operate within a map service operating environment.  FIG. 12  illustrates one possible embodiment of an operating environment  1200  for a map service (also referred to as a mapping service)  1230  and client devices  1202   a - 1202   c . In some embodiments, devices  1202   a ,  1202   b , and  1202   c  communicate over one or more wired or wireless networks  1210 . For example, wireless network  1210 , such as a cellular network, can communicate with a wide area network (WAN)  1220 , such as the Internet, by use of gateway  1214 . A gateway  1214  in some embodiments provides a packet oriented mobile data service, such as General Packet Radio Service (GPRS), or other mobile data service allowing wireless networks to transmit data to other networks, such as wide area network  1220 . Likewise, access device  1212  (e.g., IEEE 802.11g wireless access device) provides communication access to WAN  1220 . 
     The client devices  1202   a  and  1202   b  can be any portable electronic or computing device capable of communicating with a map service (e.g., smart phone, tablet, laptop computer, etc.). Device  1202   c  can be any non-portable electronic or computing device capable of communicating with a map service (e.g., desktop computer, etc.). These devices may be multifunction devices capable of various functions (e.g., placing phone calls, sending electronic messages, producing documents, etc.). Though the devices  1202   a - 1202   c  are not shown as each accessing the map service  1230  via either the wireless network  1210  and gateway  1214  or the access device  1212 , one of ordinary skill in the art will recognize that the client devices of some embodiments may access the map service via multiple different wired and/or wireless protocols. 
     Devices  1202   a - 1202   c  can also establish communications by other means. For example, these devices may communicate with other wireless devices (e.g., other devices  1202   b , cell phones, etc.) over the wireless network  1210  or through access device  1212 . Likewise the devices  1202   a - 1202   c  can establish peer-to-peer communications  1240  (e.g., a personal area network) by use of one or more communication subsystems, such as Bluetooth® communication or similar peer-to-peer protocols. 
     Devices  1202   a - 1202   c  may also receive Global Positioning Satellite (GPS) signals from GPS satellites  1260 . In addition, in some embodiments the map service  1230  and other services  1250  may also receive GPS signals from GPS satellites  1260 . 
     A map service  1230  may provide map services for one or more client devices  1202   a - 1202   c  in communication with the map service  1230  through various communication methods and protocols. A map service  1230  in some embodiments provides map information (e.g., map tiles used by the client devices to generate a two-dimensional or three-dimensional map presentation) and other map-related data, such as two-dimensional map image data (e.g., aerial view of roads utilizing satellite imagery), three-dimensional map image data (e.g., traversable map with three-dimensional features, such as buildings), route and direction calculations (e.g., driving route data, ferry route calculations, directions between two points for a pedestrian, etc.), real-time navigation data (e.g., turn-by-turn visual navigation data in two or three dimensions), traffic data, location data (e.g., where the client device currently is located), and other geographic data (e.g., wireless network coverage, weather, traffic information, or nearby points-of-interest). In various embodiments, the map service data may include localized labels for different countries or regions. Localized labels may be utilized to present map labels (e.g., street names, city names, points of interest) in different languages on client devices. The client devices  1202   a - 1202   c  may utilize these map services to obtain the various map service data, then implement various techniques to process the data and provide the processed data to various entities (e.g., internal software or hardware modules, display screens of the client devices, external display screens, or other external systems or devices. 
     The map service  1230  of some embodiments provides map services by generating and distributing the various types of map service data listed above, including map information used by the client device to generate and display a map presentation. In some embodiments, the map information includes one or more map tiles. The map tiles may include raster image data (e.g., bmp, gif, jpg/jpeg/, png, tiff, etc. data) for display as a map presentation. In some embodiments, the map tiles provide vector-based map data, with the map presentation data encoded using vector graphics (e.g., svg or drw data). The map tiles may also include various other information pertaining to the map, such as metadata. Some embodiments also encode style data (e.g., used to generate textures) into the map tiles. The client device processes (e.g., renders) the vector and/or raster image data to generate a map presentation for display as a two-dimensional or three-dimensional map presentation. To transmit the map tiles to a client device  1202   a - 1202   c , the map service  1230  of some embodiments, performs various optimization techniques to analyze a map tile before encoding the tile. 
     In some embodiments, the map tiles are generated by the map service  1230  for different possible display resolutions at the client devices  1202   a - 1202   c . In some embodiments, the higher zoom levels may include more detail (e.g., more street level information, etc.). On the other hand, map tiles for lower zoom levels may omit certain data (e.g., the street level details would not be used when displaying the entire earth). 
     To generate the map information (e.g., map tiles), the map service  1230  may obtain map service data from internal or external sources. For example, satellite imagery used in map image data may be obtained from external services, or internal systems, storage devices, or nodes. Other examples may include, but are not limited to, GPS assistance servers, wireless network coverage databases, business or personal directories, weather data, government information (e.g., construction updates or road name changes), or traffic reports. Some embodiments of a map service may update map service data (e.g., wireless network coverage) for analyzing future requests from client devices. 
     In some embodiments, the map service  1230  responds to requests from the client devices  1202   a - 1202   c  for map information. The client devices may request specific portions of a map, or specific map tiles (e.g., specific tiles at specific zoom levels). In some embodiments, the client devices may provide the map service with starting locations (or current locations) and destination locations for a route calculations, and request turn-by-turn navigation data. A client device may also request map service rendering information, such as map textures or style sheets. Requests for other geographic data may include, but are not limited to, current location, wireless network coverage, weather, traffic information, or nearby points-of-interest. 
     The client devices  1202   a - 1202   c  that obtain map service data from the map service  1230  and render the data to display the map information in two-dimensional and/or three-dimensional views. Some embodiments display a rendered map and allow a user, system, or device to provide input to manipulate a virtual camera for the map, changing the map display according to the virtual camera&#39;s position, orientation, and field-of-view. Various forms and input devices are implemented to manipulate a virtual camera. In some embodiments, touch input, through certain single or combination gestures (e.g., touch-and-hold or a swipe) manipulate the virtual camera. Other embodiments allow manipulation of the device&#39;s physical location to manipulate a virtual camera. Other input devices to the client device may be used including, e.g., auditory input (e.g., spoken words), a physical keyboard, mouse, and/or a joystick. Some embodiments provide various visual feedback to virtual camera manipulations, such as displaying an animation of possible virtual camera manipulations when transitioning from two-dimensional map views to three-dimensional map views. 
     In some embodiments, a client device  1202   a - 1202   c  implements a navigation system (e.g., turn-by-turn navigation), which may be part of an integrated mapping and navigation application. A navigation system provides directions or route information, which may be displayed to a user. As mentioned above, a client device may receive both map image data and route data from the map service  1230 . In some embodiments, the navigation feature of the client device provides real-time route and direction information based upon location information and route information received from a map service and/or other location system, such as a Global Positioning Satellite (GPS) system. A client device may display map image data that reflects the current location of the client device and update the map image data in real-time. The navigation features may provide auditory or visual directions to follow a certain route, and some embodiments display map data from the perspective of a virtual camera biased toward the route destination during turn-by-turn navigation. 
     The client devices  1202   a - 1202   c  of some embodiments implement various techniques to utilize the received map service data (e.g., optimized rendering techniques). In some embodiments, a client device locally stores some of the information used to render map data. For instance, client devices may store style sheets with rendering directions for image data containing style identifiers, common image textures (in order to decrease the amount of map image data transferred from the map service), etc. The client devices of some embodiments may implement various techniques to render two-dimensional and three-dimensional map image data, including, e.g., generating three-dimensional buildings out of two-dimensional building footprint data; modeling two-dimensional and three-dimensional map objects to determine the client device communication environment; generating models to determine whether map labels are seen from a certain virtual camera position; and generating models to smooth transitions between map image data. 
     In various embodiments, map service  1230  and/or other service(s)  1250  are configured to process search requests from any of the client devices. Search requests may include but are not limited to queries for businesses, addresses, residential locations, points of interest, or some combination thereof. Map service  1230  and/or other service(s)  1250  may be configured to return results related to a variety of parameters including but not limited to a location entered into an address bar or other text entry field (including abbreviations and/or other shorthand notation), a current map view (e.g., user may be viewing one location on the multifunction device while residing in another location), current location of the user (e.g., in cases where the current map view did not include search results), and the current route (if any). In various embodiments, these parameters may affect the composition of the search results (and/or the ordering of the search results) based on different priority weightings. In various embodiments, the search results that are returned may be a subset of results selected based on specific criteria including but not limited to a quantity of times the search result (e.g., a particular point of interest) has been requested, a measure of quality associated with the search result (e.g., highest user or editorial review rating), and/or the volume of reviews for the search results (e.g., the number of times the search result has been review or rated). 
     In various embodiments, map service  1230  and/or other service(s)  1250  are configured to provide auto-complete search results that are displayed on the client device, such as within the mapping application. For instance, auto-complete search results may populate a portion of the screen as the user enters one or more search keywords on the multifunction device. In some cases, this feature may save the user time as the desired search result may be displayed before the user enters the full search query. In various embodiments, the auto complete search results may be search results found by the client on the client device (e.g., bookmarks or contacts), search results found elsewhere (e.g., from the Internet) by map service  1230  and/or other service(s)  1250 , and/or some combination thereof. As is the case with commands, any of the search queries may be entered by the user via voice or through typing. The multifunction device may be configured to display search results graphically within any of the map display described herein. For instance, a pin or other graphical indicator may specify locations of search results as points of interest. In various embodiments, responsive to a user selection of one of these points of interest (e.g., a touch selection, such as a tap), the multifunction device is configured to display additional information about the selected point of interest including but not limited to ratings, reviews or review snippets, hours of operation, store status (e.g., open for business, permanently closed, etc.), and/or images of a storefront for the point of interest. In various embodiments, any of this information may be displayed on a graphical information card that is displayed in response to the user&#39;s selection of the point of interest. 
     In various embodiments, map service  1230  and/or other service(s)  1250  provide one or more feedback mechanisms to receive feedback from client devices  1202   a - 1202   c . For instance, client devices may provide feedback on search results to map service  1230  and/or other service(s)  1250  (e.g., feedback specifying ratings, reviews, temporary or permanent business closures, errors etc.); this feedback may be used to update information about points of interest in order to provide more accurate or more up-to-date search results in the future. In some embodiments, map service  1230  and/or other service(s)  1250  may provide testing information to the client device (e.g., an A/B test) to determine which search results are best. For instance, at random intervals, the client device may receive and present two search results to a user and allow the user to indicate the best result. The client device may report the test results to map service  1230  and/or other service(s)  1250  to improve future search results based on the chosen testing technique, such as an A/B test technique in which a baseline control sample is compared to a variety of single-variable test samples in order to improve results. 
     While the invention has been described with reference to numerous specific details, one of ordinary skill in the art will recognize that the invention can be embodied in other specific forms without departing from the spirit of the invention. For instance, many of the figures illustrate various touch gestures. However, many of the illustrated operations could be performed via different touch gestures (e.g., a swipe instead of a tap, etc.) or by non-touch input (e.g., using a cursor controller, a keyboard, a touchpad/trackpad, a near-touch sensitive screen, etc.). In addition, a number of the figures conceptually illustrate processes. The specific operations of these processes may not be performed in the exact order shown and described. The specific operations may not be performed in one continuous series of operations, and different specific operations may be performed in different embodiments. Furthermore, the process could be implemented using several sub-processes, or as part of a larger macro process. One of ordinary skill in the art would understand that the invention is not to be limited by the foregoing illustrative details, but rather is to be defined by the appended claims.