Update vehicle_type_id description in station_status

[richfab]

What is the issue and why is it an issue?

In this Slack thread, @hbruch and @testower, pointed out that the description for vehicle_type_id in station_status.json is misleading.

vehicle_type_id: The vehicle_type_id of each vehicle type at the station as described in vehicle_types.json. This field is REQUIRED if the vehicle_types.json is defined.

Possible interpretation: all vehicle types described in vehicle_types.json must be listed, including those with count=0.

This is an issue because producers with many different vehicle_types, wish they would not need to specify every single vehicle type not available at every station, but rather take a not listed vehicle_type_id as count=0 (which is already the current intention of the specs).

Please describe some potential solutions you have considered (even if they aren’t related to GBFS).

Update the vehicle_type_id description in station_status.json:

vehicle_type_id: The vehicle_type_id of each vehicle type at the station as described in vehicle_types.json. A vehicle type not available at the station can be omitted from the list or specified with a count=0.

Note that the JSON-Schema and gbfs-validator have been updated (PR MobilityData/gbfs-json-schema#94 and PR MobilityData/gbfs-validator#124) to reflect this change.

Is your potential solution a breaking change?

• Yes
• No
• Unsure

This change is editorial (it does not modify the behaviour of the specs). So a vote is not required.