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Travel Time (Isochrone & Surface) API

Contact Info

  • Entur, Norway


  • 2022-05-09 Initial implementation


The API produces a snapshot of travel time form a single place to places around it. The results can be fetched either as a set of isochrones or a raster map.


The feature must be enabled in otp-config.json as follows:

// otp-config.json
    "otpFeatures" : {
        "SandboxAPITravelTime" : true

API parameters

  • location Origin of the search, can be either latitude,longitude or a stop id
  • time Departure time as a ISO-8601 time and date. The dafault value is the current time.
  • cutoff The maximum travel duration as a ISO-8601 duration. The PT can be dropped to simplify the value. This parameter can be given multiple times to include multiple isochrones in a single request. The default value is one hour.
  • modes A list of travel modes.

Isochrone API


Results is the travel time boundaries at the cutoff travel time.

Travel time surface API


The travel time as a GeoTIFF raster file. The file has a single 32-bit int band, which contains the travel time in seconds.