The geographical start point of the trip, in WGS84 'latitude,longitude' format. Coordinates should be in decimal, and only the first 6 digits of precision will be used.

The geographical end point of the trip, in WGS84 'latitude,longitude' format. Coordinates should be in decimal, and only the first 6 digits of precision will be used.

The geographical start of the route, in WGS84 'latitude,longitude' format. Coordinates should be in decimal, and only the first 6 decimal places will be used.

The geographical end of the route, in WGS84 'latitude,longitude' format. Coordinates should be in decimal, and only the first 6 decimal places will be used.

An IETF BCP 47 language tag that indicates the end-user's language preference.

When provided, the response will contain a language property that indicates the language used for any localizable elements of the response (such as turning instructions). This language will be a best-effort attempt to fulfill the expressed preference, but it may contain a value that wasn't expressed in the request (this will generally be en-US as a fallback).

Note that language preference will generally only affect Citymapper-generated content such as turning instructions. External content such as Stop names and Status descriptions will generally be passed through in their original language.

When rerouting (requesting an update to a previous response that accounts for the user's updated location), this value should be set to the signature provided in the original Route. This allows for more efficient determination of the updated Route.

This value must be URL-encoded.

When providing this parameter, the current_location (when applicable) or start location should be set to the user's latest location.

When this parameter is included, Citymapper may not return results in cases where the request differs significantly from the original, for instance if the end location is different, or if more than 1 hour has passed since the original request.

An angle clockwise from North between 0 and 359, where North is 0 and East is 90.

This bearing is used to influence the initial instruction text and/or routing, most-commonly to avoid the user from being asked to make a u-turn, if continuing on their current bearing gives a comparable route.

This should be provided only if you wish to influence the initial direction of travel for the route.

Optional parameter to improve rerouting behaviour. The Coordinates of up to 10 of the past locations of the user as a comma separated list. Coordinates must be in WGS84 'latitude,longitude' format. Coordinates must be in decimal, and only the first 6 digits of precision will be used.

Must be chronologically ordered, most recent last. past_loc_ages and past_loc_accuracies must be provided alongside. The server will only consider a maximum of 10 locations, if more than 10 locations are provided the least recent locations will be ignored. The server is likely to ignore any locations older than 30 seconds or any that are less than 1 second apart.

Optional parameter to improve rerouting behaviour. The Ages of up to 10 of the past locations of the user as a comma separated list. Ages must be in integer seconds since the current location.

Must be chronologically ordered, most recent last. past_loc_coords and past_loc_accuracies must be provided alongside. The server will only consider a maximum of 10 locations, if more than 10 locations are provided the least recent locations will be ignored. The server is likely to ignore any locations older than 30 seconds or any that are less than 1 second apart.