Boarding locations

It is often the case that the coordinates of stops are relatively far away from where the passengers are expected to the wait for the vehicle.

A good example of this is Buckhead subway station in Atlanta.

Buckhead station

There the coordinates of the stop in GTFS are located on Peachtree Road so OTP would instruct passengers to wait on the street rather than walking down the stairs to the platform.

OSM tagging

We can correct the waiting location for the passenger by adding some tags to OSM which help OTP decide to correct the location. In general, you should familiarise yourself with the OSM wiki page on public transport.

You can add cross-references to a stop's id or code on all OSM entities (nodes, ways, relations) which have one of the following tag combinations:

Notes

Cross-referencing

In order to tell OTP how to link up the OSM entities to the stops you need to add a ref tag whose value is the stop's id or code.

However, tagging conventions vary from location to location so other tags can be configured, too.

For example, there is a country-wide stop reference system in Germany called IFOPT and therefore if you want to use it to match stops (example platform), add the following to build-config.json:

{
  "boardingLocationTags": ["ref", "ref:IFOPT"]
}

Multiple stops on the same platform

Some stations have a middle platform with a stop on either side of it. In such a case, you can simply add two or more references separated by a semicolon, as seen in this example.