## A Brief Guide To Connectivity Travel Time Data: England

 
 
These files provide a detailed dataset of travel times between small area origins in England and selected transport destinations (airports, large rail stations and major road junctions).  For each origin - destination pair, a representative travel time is given. For airports and stations, times are calculated separately for travel by public transport, and by car.  For road junctions, only times by car are calculated. For each of the destination types, there are files for different time periods.  For details of how travel times are estimated over these periods, please refer to the technical documentation. 

These times are effectively the results of a large number of 'journey planner' type queries based on public transport times tables, road networks and data on average car speeds. Data are available for both the public transport mode (PT) and car mode (HW) for 2011. An update for 2013 is available for the car mode for the AM peak. The data is in a comma delimited ASCII format.  There are a number of individual files available, grouped into three zip files.  The individual files are listed below 

## Files Available

The files contain one row for each origin-destination combination, where a time could be estimated. In some cases the journey time algorithm was unable to estimate a time, usually this is where the journey is likely to be over 360 minutes - for 2013 an explicit cut-off at 360 minutes was introduced).  

| File name                       | Destination    | Time of day            | Modal type       |   Year  | Rows       |
|---------------------------------|----------------|------------------------|------------------|---------|------------|
| Road-junctions-travel-times.zip |                |                        |                  |         |            |
| Junctions_HW_AM.csv             | Road junctions | AM peak (7am to 10am)  | Car              |   2011  | 16,869,696 |
| Junctions_HW_Mid.csv            | Road junctions | Mid peak (10am to 4pm) | Car              |   2011  | 16,869,696 |
| Junctions_HW_PM.csv             | Road junctions | PM peak (4pm to 7pm)   | Car              |   2011  | 16,869,696 |
| Rail-stations-travel-times.zip  |                |                        |                  |         |            |
|                                 |                |                        |                  |         |            |
| Stations_HW_AM.csv              | Rail stations  | AM peak (7am to 10am)  | Car              |   2011  | 6,274,704  |
| Stations_HW_Mid.csv             | Rail stations  | Mid peak (10am to 4pm) | Car              |   2011  | 6,274,704  |
| Stations_HW_PM.csv              | Rail stations  | PM peak (4pm to 7pm)   | Car              |   2011  | 6,274,704  |
| Stations_PT_AM.csv              | Rail stations  | AM peak (7am to 10am)  | Public transport |   2011  | 2,244,943  |
| Stations_PT_Mid.csv             | Rail stations  | Mid peak (10am to 4pm) | Public transport |   2011  | 3,733,339  |
| Stations_PT_PM.csv              | Rail stations  | PM peak (4pm to 7pm)   | Public transport |   2011  | 3,646,483  |
| Stations_PT_Late.csv            | Rail stations  | Late (7pm to midnight) | Public transport |   2011  | 3,217,877  |
| Airports-travel-times.zip       |                |                        |                  |         |            |
|                                 |                |                        |                  |         |            |
| Airports_HW_AM.csv              | Airports       | AM peak (7am to 10am)  | Car              |   2011  | 1,302,944  |
| Airports _HW_Mid.csv            | Airports       | Mid peak (10am to 4pm) | Car              |   2011  | 1,302,944  |
| Airports_HW_PM.csv              | Airports       | PM peak (4pm to 7pm)   | Car              |   2011  | 1,302,944  |
| Airports_PT_AM.csv              | Airports       | AM peak (7am to 10am)  | Public transport |   2011  | 240,306    |
| Airports_PT_Mid.csv             | Airports       | Mid peak (10am to 4pm) | Public transport |   2011  | 425,194    |
| Airports_PT_PM.csv              | Airports       | PM peak (4pm to 7pm)   | Public transport |   2011  | 389,186    |
| Airports_PT_Late.csv            | Airports       | Late (7pm to midnight) | Public transport |   2011  | 312,880    |
| 2013-travel-times.zip           |                |                        |                  |         |            |
| 2013Junctions_HW_AM.csv         | Road junctions | AM peak (7am to 10am)  | Car              |   2013  | 16,051,932 |
| 2013Stations_HW_AM.csv          | Rail stations  | AM peak (7am to 10am)  | Car              |   2013  | 5,804,710  |
| 2013Airports_HW_AM.csv          | Airports       | AM peak (7am to 10am)  | Car              |   2013  | 1,144,524  |

## Taxonomy Of Variables

| Variable name                                                                            | Description                                                                                |
|------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------|
| Year                                                                                     | Year to which data relate - this field was added for 2013, not present in 2011 datasets    |
| LSOA_Code                                                                                | Lower Super Output Area (LSOA) code, based on 2001 boundaries for 2011 data,               |
| based on 2011 boundaries for 2013 data.                                                  |                                                                                            |
| Further details can be found via the ONS Geography Portal                                |                                                                                            |
| https://geoportal.statistics.gov.uk/geoportal/catalog/main/home.page                     |                                                                                            |
| RepTime                                                                                  | A representative travel time in minutes between the LSOA and the destination (as           |
| identified by the UID, below) - the estimated minimum time that can be achieved.         |                                                                                            |
| Please refer to the technical documentation for further details.                         |                                                                                            |
| Percentage Services                                                                      | A frequency score which measures, for public transport, the percentage of time during      |
| the given time period that the representative time is actually possible. For journeys by |                                                                                            |
| car, which do not rely on timetables, this variable is 100% throughout.                  |                                                                                            |
| UID                                                                                      | A unique identifier for the destination as defined by DfT, with:                           |
|                                                                                         |                                                                                            |
|                                                                                          | A1 - A39: Airports                                                                         |
|                                                                                         |                                                                                            |
|                                                                                          | R1 - R491: Road junctions                                                                  |
|                                                                                         |                                                                                            |
|                                                                                          | For stations, the standard National Rail three letter codes are used (e.g. VIC             |
| for London Victoria)                                                                     |                                                                                            |
| Further details are available via the destinations lookup table.                         |                                                                                            |
| Near Order                                                                               | Order of destinations from the origin in terms of travel time i.e. the nearest destination |
| has NearOrder=0, the next nearest is NearOrder=1 and so on.                              |                                                                                            |

 Further information Technical documentation explaining how the travel times have been calculated can be accessed via: https://www.gov.uk/government/publications/transport-connectivity-and-accessibility-of-key-servicesstatistics-guidance Statistical releases accompanying publication of each data set (2011 edition illustrates potential uses of this dataset): https://www.gov.uk/government/publications/transport-connectivity-statistics-england-2011-data https://www.gov.uk/government/statistics/connectivity-travel-time-indicators-england-2013-experimentalstatistics Statistical tables showing travel times aggregated to local authority and regional level can be found at: https://www.gov.uk/government/collections/transport-connectivity-and-accessibility-of-key-servicesstatistics#data-tables-associated-with-this-series We welcome any feedback on this data, which can be provided via subnational.stats@dft.gsi.gov.uk. 

Department for Transport: Statistics Travel and Safety Last updated: June 2015