Patent Description:
Very busy fueling stations often have quite long queues of vehicles waiting to access a dispenser for refueling. A customer wanting to refuel must quickly choose a refueling lane (i.e., the approach to a fueling position) based on an observation of the relative lengths of the respective queues and the refueling status of the vehicle currently at the dispensing position. As a result, traffic at the service station can be chaotic. In addition, customers may be frustrated to discover after choosing a dispensing position that the reason the position appears open is that it is out of service. It would be advantageous to the retailer if refueling throughput at the service station could be increased, thus enhancing customer satisfaction.

<CIT> discloses a fueling system composed of a plurality of fueling units. The system includes a control unit for controlling signals transmitted from the fueling units and an outdoor fueling state indicator for indicating the fueling state, <CIT> discloses a fuel authorization program based upon equipping fuel station, fuel pumps and vehicles in components to enable automatic fuel authorization for enrolled vehicles. <CIT> discloses a method and apparatus for the purpose of ensuring positioning between a fixed automatic fueling service terminal and a vehicle. <CIT> discloses an interaction fuel dispenser system having a plurality of fuel dispensers operating in conjunction with a local server.

The present invention recognizes and addresses the foregoing considerations, and others, of prior art construction and methods. In this regard, certain exemplary and nonlimiting aspects of the present invention will now be described. These aspects are intended to provide some context for certain principles associated with the present invention, but are not intended to be defining of the full scope of the present invention.

Certain aspects of the present invention are directed to a system for providing customers with information useful in the quick selection of a dispensing lane. Examples of retail fueling environments, fuel dispensers, and user interfaces for fuel dispensers are provided in <CIT> (entitled "Fuel Dispensing System"), <CIT> (entitled "Intelligent Fueling"), <CIT> (entitled "Multimedia Video/Graphics in Fuel Dispensers"),<CIT> (entitled "Internet Capable Browser Dispenser Architecture"), <CIT> (entitled "Wide Range, High Accuracy Flow Meter"), <CIT> (entitled "Fuel Dispenser Fuel Flow Meter Device, System and Method"), <CIT> (entitled "Fuel Dispensing System for Cash Customers") and <CIT> (entitled "Electronic Payment Methods for a Mobile Device") and <CIT> (entitled "Fuel Dispenser"), <CIT> (entitled "Payment Processing System for Use in a Retail Environment Having Segmented Architecture"), and<CIT> (entitled "Virtual PIN Pad for Fuel Payment Systems").

According to the present invention, there is provided a retail fueling environment comprising:.

According to some example embodiments, the detection electronics may comprise respective sniffers associated with the fuel dispensers, the sniffers being operative to detect signals indicative of the transaction status. In addition or in the alternative, the detection electronics may comprise proximity detection electronics operative to sense presence of a vehicle in the associated refueling position. For example, the proximity detection electronics may comprise a camera.

At least parking assist indicator may be associated with at least one of the refueling lanes, the parking assist indicator being operative to display information indicating when a vehicle has reached a selected location in the refueling lanes. In some embodiments, at least a portion of the processing electronics may be included in the position indicator control device. Alternatively or in addition, at least a portion of the processing electronics may comprise a cloud server remote from the position indicator control device.

Exemplary embodiments are contemplated in which the visual indicators each comprise a plurality of discrete lights of different colors (e.g., red, yellow, and green lights) selectively illuminated to convey information. The plurality of discrete lights may be arranged in a light stack.

In some exemplary embodiments, each of the dispensers includes connection electronics operative to establish a wireless communication link with a suitably-equipped vehicle in the at least one refueling position. The connection electronics may be operative to obtain information from the suitably equipped vehicle regarding at least one of fuel tank total volume and fuel tank current fuel volume. The fuel tank total volume information may be derived after receipt of information indicating type of vehicle.

According to another aspect of the invention, there is provided a method of indicating availability of a refueling position adjacent to a fuel dispenser, said method comprising steps of:.

A full and enabling disclosure of the present invention, including the best mode thereof directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended drawings, in which:.

Repeat use of reference characters in the present specification and drawings is intended to represent same or analogous features or elements of the invention.

Reference will now be made in detail to presently preferred embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings.

<FIG> diagrammatically illustrate a portion of the forecourt region of a retail fueling environment including certain aspects in accordance with the present invention. As can be seen, a plurality of fuel dispensers <NUM> extend vertically from surface <NUM> which may be traversed by vehicles to be refueled. (Typically, the fuel dispensers may actually be mounted on a concrete "island" <NUM> (<FIG>) defining a curb about its periphery. It will be appreciated that the islands are omitted from <FIG> to simplify the diagrams. ) In many cases, a canopy <NUM> may extend over the dispensers to protect customers from rain during the refueling process.

As one skilled in the art will recognize, the fuel dispensers are typically configured to allow simultaneous dispensing to separate vehicles on each side. Thus, a total of four dispensers will result in eight discrete dispensing lanes, as shown in <FIG>. In addition, multiple fuel dispensers may be aligned between the dispensing lanes resulting in several fueling positions along each lane. In the past, customers have been required to choose quickly one of these multiple dispensing lanes based on simple observation of the relative traffic in each. In accordance with the present invention, however, an indicator system is provided to inform customers of the refueling status of vehicles at the various dispensing positions. (Or, if a dispensing location is out of service or a delivery truck is in the way, the indicator system may also preferably so inform the customer. ) As a result, customers are encouraged to select a dispensing lane that lessens congestion on the forecourt and otherwise enhances throughput.

A variety of different types of indicators may be used for this purpose, including indicators that define a travel path in the forecourt itself. For example, various indicators can be embedded in surface <NUM> and selectively illuminated to show the customer where to go. Typically, however, the indicator may be a visual indicator that clearly denotes the current status of a dispensing position. In the illustrated embodiment, for example, respective visual indicators <NUM> are associated with each of the dispensing lanes and/or positions. In the illustrated embodiment, for example, a single visual indicator <NUM> is associated with each of lanes <NUM>-<NUM>. Lanes <NUM>-<NUM> may each have only a single fueling position, meaning that a lane indicator and position indicator would be the same. If there are multiple fueling positions in any of lanes <NUM>-<NUM>, the indicator may show that at least one of the fueling positions is available. Lane <NUM> in this example does have two fueling positions (designated "P1" and "P2"), each having its own visual indicator <NUM>.

Indicators <NUM> may take a variety of forms as necessary or desired, including countdown clocks, dynamic lights that flash with a frequency that indicates availability, pie chart indicators, and the like. In the illustrated embodiment, however, visual indicators <NUM> are similar to common traffic signals having vertically-aligned green ("Go"), yellow ("Caution"), and red ("Stop") lights. (As one skilled in the art will appreciate, the actual light source may emit in the resulting color or white light may pass through a lens to produce the resulting color. ) According to some embodiments, the indicators <NUM> may be operated on a stand-alone basis, indicating whether or not a particular fueling position is available without regard to the status of other fueling positions. While such a stand-alone system may be an improvement over no indicator system at all, indicators <NUM> are preferably controlled based not only on the status of the associated dispensing position, but also knowledge of the status of the other dispensing positions. A green indicator may thus indicate that a particular fueling position is "more available" than another position even if both are currently occupied by other vehicles. For example, one of the vehicles may be nearer the beginning of its fueling transaction whereas the other vehicle may be nearer the end of its fueling transaction.

<FIG> illustrates a visual indicator <NUM>' in accordance with an alternative embodiment. Rather than simple green, yellow, and red lights, an illuminated green arrow and an illuminated red "X" are provided to convey additional graphical information. For example, the angle of the green arrow can be adjusted as required for traffic flow clarity.

A variety of techniques may be utilized to determine the presence of a vehicle in a dispensing position and/or the status of its current transaction. For example, each of the dispensers (or nearby structures) may be equipped with suitable proximity detectors to determine vehicle presence. This is illustrated, for example, in <FIG>, where dispenser <NUM> includes proximity detection electronics <NUM> which detect a vehicle in the fueling position <NUM> (denoted "Activation Zone"). Any suitable presence detection techniques may be utilized for this purpose, including computer vision, vehicle heat sensing, in-ground inductive sensors, weight sensors, ultrasonic detectors, light (e.g., infrared) beam, etc. In addition, the detection electronics <NUM> may advantageously determine the relative position of the vehicle in the activation zone (i.e., the effective area of the presence detection devices). Specifically, because most vehicles have their fuel fill door in the same approximate location (with only the side typically being different from vehicle to vehicle), detection electronics <NUM> may determine whether the fill door is approximately adjacent to nozzle cradle (boot) of the dispenser. This fact can be used to signal the driver where to stop.

For example, as shown in <FIG>, a parking assist indicator <NUM> here takes the form of a sign showing messages (e.g., "Pull Forward" or "Stop Now") helpful to the driver. Alternatively, or in addition, a message may be sent in a "connected car" embodiment (e.g., shown in <FIG>) to the vehicle's infotainment system such as an audible message played over the vehicle's radio. In any case, the parking assist functionality reduces the need for the driver to make adjustments to the vehicle's position which enhances throughput at the service station.

In addition to or in lieu of presence detection, the indicator system may be configured to obtain and utilize knowledge of the actual status of the fueling transaction at each fueling position. This information may be provided by a direct connection to the site automation equipment (i.e., the site's point-of-sale (POS) and forecourt controller) or to the fuel dispenser. However, in accordance with the embodiment described below, a "sniffer" is located in each dispenser to detect transaction status information without a direct interface to the site automation equipment or dispenser control electronics. This allows the system to be installed as a retrofit without significant modification that might otherwise be required for communication with equipment from different manufacturers.

In this regard, <FIG> illustrates further details about a fuel dispensing environment in which a plurality of fuel dispensers <NUM> are located. The fuel dispensing environment will typically include a central building having a convenience store ("C-store") and also housing a POS system, forecourt controller, electronic payment server, and/or other devices to control fueling transactions. Such devices are collectively represented in this illustration as site <NUM>. Site <NUM> provides communication with a cloud server <NUM>, which similarly communicates in this embodiment with other fueling sites <NUM>. Data from site <NUM> and optionally from other sites <NUM> are compiled in a usage analytics database <NUM>, which may be used in the control of indicators <NUM>. In this regard, the fueling environment preferably has a centralized indicator control device <NUM> that is used to set and change the status of each of the visual indicators <NUM>. In addition, a site summary indicator <NUM> may also be provided. Indicator <NUM> may, for example, be located at the entrance of the site to inform a prospective customer of the site's general availability. In this case, indicator <NUM> informs a customer that there are available fueling positions. Information regarding average wait time may also be provided. As discussed more fully below, the system's internet connectivity allows the same information to be sent to or accessed by prospective customers in the area such as via an "app" executing on a smart phone or other mobile device.

<FIG> illustrates the manner in which a visual indicator <NUM> can be controlled to provide efficient throughput at the associated dispensing position and/or lane. As shown, the lights are changed depending on the stage of the transaction to inform another customer in the queue of the status of the current transaction. the transaction proceeds from left to right as follows:.

Thus, knowing the actual stages and the profile of a typical transaction allows a much more effective indication of "trends" for the current transaction. There is a clear visual sense of the dynamic evolution of the transaction that psychologically reduces the impact of the wait time on the customer.

As noted above, preferred embodiments of the present invention are adapted to derive information about the transaction status at a particular dispenser. Many existing fuel dispensers utilize low-data rate legacy cables, such as two-wire or RS422, to exchange messages with the forecourt controller and point-of-sale (POS) system located in the convenience store. In this embodiment, dispenser electronics <NUM> transmit signals to and receive signals from forecourt controller (FCC) <NUM> over two-wire ("TW") legacy cable <NUM>. As is well-known, FCC <NUM> receives requests to initiate a transaction from dispenser electronics <NUM> and instructs dispenser electronics <NUM> to allow dispensing of fuel after the transaction has been authorized. When dispensing of fuel has been finalized, dispenser electronics <NUM> provides information on the volume and monetary amount of the dispensed fuel back to FCC <NUM> so that the transaction can be finalized.

Because the low frequency of two-wire communication limits the speed of data transfer, efforts have recently been made to utilize legacy wiring to provide high bandwidth communications, such as video advertising, to the dispensers. One such system is disclosed in <CIT>. In accordance with the present invention, high bandwidth communication may be utilized to provide transaction status information to cloud server <NUM> and/or control device <NUM> so that the state of all visual indicators <NUM> at the site may be most effectively controlled.

Aspects of the present invention may be incorporated into new dispensers at the time of manufacture, or may be added to existing dispensers as a retrofit. In the embodiment of <FIG>, for example, an existing dispenser <NUM> has been retrofit via the inclusion of an active sniffer <NUM>. An exemplary active sniffer that may be used for this purpose is shown and described in <CIT>. As shown, sniffer <NUM> is installed at an intermediate location along cable <NUM> between dispenser electronics <NUM> and FCC <NUM>. Referring now also to <FIG>, active sniffer <NUM> is an electronic device that intercepts messages appearing along cable <NUM> on either its "A" side or "B" side. Sniffer <NUM> includes a suitably-programmed processor (and associated memory) that interprets the message, generally passing it along to the other side. Software module BR (<FIG>) serves as a logical bridge to provide data buffering between sides A and B. (In some cases, sniffer <NUM> may substitute a different message for the one that was received, or provide a response that emulates a certain condition. ) Embodiments are also contemplated that utilize a purely passive sniffer, which merely detects the messages flowing between pump electronics <NUM> and FCC <NUM>.

In addition, sniffer <NUM> will preferably include a TCP/IP channel that can allow communication to cloud server <NUM> and/or control device <NUM>. This may be accomplished by various wireless techniques, such as wifi, Zigbee, or other mesh network technology. Often, however, it will be desirable to provide a wired connection to sniffer <NUM> to ensure more reliable connectivity. For example, high speed data communication may be provided over legacy cable <NUM>, such as using DSL or HomePlug techniques. In this regard, the illustrated embodiment provides a first over legacy cable (OLC) modem <NUM> connected to a suitable port of sniffer <NUM>. A second OLC modem <NUM> is located away from fuel dispenser <NUM>, such as inside the convenience store. As indicated at <NUM>, high bandwidth network communications are transmitted on cable <NUM> along with the lower frequency two-wire signals transmitted to and from FCC <NUM>. Modem <NUM> is connected to a suitable router or gateway that provides communication with cloud server <NUM> and/or control device <NUM>.

Alternatively, as shown in <FIG>, the TCP/IP connection may be provided via Ethernet cable. In many cases, however, the use of Ethernet cable will not be the preferred option due to the difficulty of running new cable in existing installations. As noted, OLC modem <NUM> allows a new dispenser equipped with sniffer <NUM>, or an existing dispenser retrofit with a kit including sniffer <NUM>, to utilize advantageously the legacy two-wire cable already in place under the service station's forecourt. As also shown, sniffer <NUM> includes a suitable processor <NUM> that communicates with an on-board memory <NUM>. In this embodiment, processor <NUM> preferably includes cloud connection processor (CCP) capability. Memory <NUM>, which may be one or more physical devices in actual practice, preferably has volatile and nonvolatile aspects. In some cases, for example, some or all of memory <NUM> may be located on the same chip as processor <NUM> (which will generally also include cache memory to facilitate its operation). The configuration file is preferably stored in nonvolatile memory of memory <NUM>. Sniffer <NUM>, along with OLC modem <NUM>, can be conveniently packaged together in a retrofit kit <NUM> for installation in an existing fuel dispenser.

Referring now also to <FIG>, preferred embodiments may utilize wireless connections with vehicles in the forecourt to provide additional capability to systems and methods of the present invention. In this regard, electronics <NUM> of fuel dispenser <NUM> are in this case equipped with circuitry, denoted V2X Radio <NUM> (which include one or more suitable antennas) that allows for the creation of ad hoc wireless networks on a one-to-one basis with suitably-equipped vehicles in the area (e.g., within a <NUM>-yard radius). As shown, V2X radio <NUM> is in communication with or is incorporated into the fuel dispenser's control system <NUM>.

A pair of vehicles 156a-b are shown adjacent to fuel dispenser <NUM> in the fueling position. Nozzles <NUM>, at the end of an associated hose <NUM>, are inserted into the fill necks of the respective vehicle's fuel tank to receive fuel when authorized dispensing has begun. Vehicles 156a-b are equipped with vehicle electronics 162a-b allowing the creation of an ad hoc peer-to-peer network with a suitably equipped fuel dispenser. V2X Radio <NUM> functions to detect the presence of vehicles <NUM> to form the one to one networks on an as-needed basis. For example, in a preferred embodiment, V2X Radio <NUM> may provide wireless connectivity with the vehicle in accordance with standard <NUM>.

As a result, the vehicle can provide information at the initiation of and during a fueling transaction that is relevant to the availability of the various fueling positions in the forecourt. For example, information regarding the vehicle type (e.g., make and model) may be used to ascertain the capacity of the vehicles' fuel tanks. Information regarding the level of fuel in the tank can be sent from the vehicle to determine an estimate of the expected refueling time. Type of fuel required (e.g., diesel versus gasoline) can also be determined from the vehicle information. In addition, historical information, such as refueling preferences (e.g., grade of fuel) and previous refueling times, may be ascertained once the specific vehicle is identified and matched with a vehicle that has previously refueled at the same site or others in the network. Loyalty status may also be determined, such as by assuming that the typical driver of the vehicle is the current motorist. Alternatively, loyalty status may be obtained from a smartphone app installed on the motorist's phone, such as if the phone is connected to the vehicle's infotainment system (e.g., by Bluetooth connection).

<FIG> shows some basic aspects regarding use of the system illustrated in <FIG>. As indicated at step <NUM>, transaction status at the respective dispensers is reported to cloud server <NUM> and/or control device <NUM> (such as by the sniffer discussed above and/or communication with the vehicle being refueled). If the status is a change from the previous status (as indicated at step <NUM>), a throughput analysis is performed (step <NUM>). Based on the results of this analysis, the state of one of more of the visual indicators <NUM> can be changed (step <NUM>).

As indicated at step <NUM>, information regarding the status of the fueling site can be sent to potential customers in the area such as via an "app" for the operator of the fueling site installed on a potential customer's mobile device. The app may in turn display its information on the vehicle's infotainment screen if the mobile device is in short-range wireless connection with the vehicle (e.g., via a Bluetooth connection). The information sent to the app, and thus displayed in the vehicle, may indicate distance to the fueling location and the real-time status of the fueling position indicators (e.g., "Four fueling positions are currently available"). This capability may be especially desirable for drivers of commercial vehicles.

Referring now to <FIG>, it will be appreciated that the throughput analysis <NUM> may utilize a variety of different types and sources of data in order to provide accurate and predictive information regarding fueling position availability. The data to be used can be derived from the site itself, from the vehicles being refueling and their status, other sites in the area, and the like. In a preferred embodiment, as noted above, the analytics are performed by or in conjunction with cloud server <NUM> in order to utilize advantageously the significant computing power that remote computation can provide. Thus, cloud-based statistics and analytics allow real-time adjustment of indicator algorithms and operation based on real-time forecourt loads, vehicle types present, and other useful factors.

For example, vehicles that are capable of wireless communication with the dispensers <NUM> (or another access point by which the data can be obtained) can supply information regarding the level (volume) of fuel in the respective fuel tanks (as indicated at <NUM>) as well as the vehicle type (e.g., make and model) from which the total volume of the fuel tank can be determined (as indicated at <NUM>). In addition, some vehicles require diesel or other special fuel types which can also be derived with knowledge of the vehicle type. Known customer preferences, such as a preference for higher grade gasoline or a designated loyalty status, can be provided from the vehicle for consideration in the throughput analysis (as indicated at <NUM>). For example, the system may react by directing a known customer who has achieved a certain loyalty status to a particular fueling position that minimizes that customer's wait time.

The status of a customer's payment is also preferably utilized in the throughput analysis (as indicated at <NUM>). For example, finalization of payment indicates that refueling is completed and the customer will soon be driving away. Occasionally, however, the customer may decide during or after the refueling process to enter the convenience store. This event, which tends to increase the dwell time that a vehicle remains in a fueling position, can be detected (such as by suitable motion detectors associated with dispenser <NUM>) and used to adjust the throughput analysis (as indicated at <NUM>). Factors known to the fueling site, such as fueling positions that are out of service (as indicated at <NUM>) and which, if any, fueling positions are currently not occupied (as indicated at <NUM>) can also be utilized in the throughput analysis. Weather conditions also affect a customer's decision to stop for fuel, and can be used in the throughput analysis (as indicated at <NUM>).

Referring now to <FIG>, an existing fuel dispenser <NUM> has been retrofit with a pair of stand-alone position indicator devices 300a-b (each generally referred to as "device <NUM>"). As shown, each device <NUM> includes a "stack light" <NUM>. Stack lights <NUM> may have red, yellow, and green light portions located one above the other similar to visual indicators <NUM>. In addition, stack lights <NUM> may be viewable around a <NUM>° field of view to be easily seen by customers driving into the fueling position from either direction. Suitable mounting hardware is preferably provided to allow the light stacks <NUM> to be mounted to an existing fuel dispenser.

As shown, device <NUM> preferably includes a camera <NUM> or other imaging/motion detection sensors directed toward its respective fueling position. As discussed above, such presence detection devices can be used to determine whether a vehicle is located in the fueling position, the relative position in the fueling position at which the vehicle is located (e.g., for parking assist functions), whether the customer has retrieved the dispenser nozzle from its boot or returned the dispenser nozzle back to its boot, and whether the customer has left the area (e.g., to enter the convenience store). This information can be processed locally using controller <NUM> in order to ascertain the status of the fueling positions associated with dispenser <NUM>. In addition, tamper detection circuitry <NUM> may be provided at the interface where the respective stack lights <NUM> are attached to the dispenser housing. As a result, a suitable alert or warning can be provided in the event of an attempt to detach the stack lights <NUM>.

Referring to <FIG>, a plurality of devices <NUM> are connected together to provide an integrated forecourt fueling position availability system. In addition to stack lights <NUM> and camera <NUM> noted above, each device <NUM> in this case includes a parking assist indicator <NUM>, some form of audible annunciator <NUM> (e.g., to provide anti-tampering warnings), and a suitable "connected car interface" <NUM> (e.g., to provide wireless V2X communications between the device <NUM> and the adjacent vehicle). In this case, however, the device <NUM> communicates with a site-wide indicator controller <NUM> (which may be integrated in whole or in part into the site controller or POS of the fueling environment). Controller <NUM> is preferably in communication with one or more remote servers (e.g., cloud server <NUM>) via an internet cloud interface <NUM>. In this way, the throughput analysis for the site can be performed remotely and sent back to controller <NUM> for setting the various indicators.

In this example, several fueling positions are aligned in each fueling lane so per lane indicators <NUM> are also provided. A site summary indicator <NUM> may also be provided. As noted above, site summary indicator <NUM> may be located, for example, at the entrance to the site to provide information about fueling position availability (e.g., "Four fueling positions are currently available" or "Average wait time is <NUM> seconds"). Alternatively, or in addition, a roadside indicator can be provided in advance of the fueling site (e.g., along an expressway before the exit that leads to the site). Also, the use of dynamically adaptable signs is contemplated. For example, pointing of the sign could be dynamic to point in the line of sight from the site entrance to fueling lanes as currently configured (large sites could dynamically configure fueling lanes). In the event that the fueling environment has multiple forecourts, such as one for vehicles and another for large trucks, similar per forecourt summary indicators <NUM> may also be provided.

It can thus be seen that the present invention provides a retail fueling environment having a fueling position availability indicator system. As described, some preferred embodiments utilize cloud-based statistics and analytics to maximize forecourt throughput or to meet other objectives. Long-term analytics, obtained from the local controller and/or the cloud, can be utilized to adjust the signaling timing over time. For example, the transition from "vehicle present but fueling almost complete" state to available can be timed to occur just before the vehicle has completely left the fueling position, gaining valuable seconds in forecourt efficiency. Also, marketing messages displayed at the fuel dispenser to the customer during the refueling process can be selected at least in part based on the expected dwell time at the dispenser as determined by the analytical process described above. Fueling positions reserved for loyalty customers can be indicated as unavailable, changing over to available when a loyalty customer is detected (as via a peer-to-peer network described above).

Claim 1:
A retail fueling environment comprising:
a plurality of fuel dispensers (<NUM>) located so that each defines at least one refueling position in a dispensing lane;
site electronics in communication with said plurality of fuel dispensers (<NUM>);
a fueling position availability indicator system including:
a plurality of position indicators (<NUM>) each position indicator (<NUM>) associated with at least one refueling position and visually indicating an availability status of the associated refueling position to assist a customer in selecting from among a plurality of dispensing lanes;
detection electronics (<NUM>) operative to ascertain data regarding transaction status of refueling transactions at the associated refueling positions;
processing electronics operative to determine the availability status of each of said refueling positions based at least in part on said transaction status of the refueling transaction at the associated refueling position; and
a position indicator control device (<NUM>) operative to produce control signals to said position indicators (<NUM>) that changes the availability status of the position indicators (<NUM>) for the associated refueling positions, the position indicator control device (<NUM>) controlling the position indicators to show different availability status during authorization, refueling, and end transaction stages of the refueling transaction, each position indicator having a plurality of discrete lights of different colors selectively actuatable to visually indicate availability status of an associated refueling position,
wherein the lights are changed depending on the stage of the transaction to inform another customer in the queue of the status of the current transaction, including presentation of a payment card, flow of fuel, and replacement of a nozzle in the nozzle boot.