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Overview
Developer Tools
Travel Time Matrix API
Isochrone API
H3 API
Geohash API
v4/geohash/fast
Endpoint Reference
v4/geohash
Endpoint Reference
Distance Map API
Routes API
Geocoding API
Additional API Reference
Error Handling
ArcGIS plugin
QGIS plugin
Alteryx plugin
TravelTime.comchevronDocs

Usage Limits

Depending on which plan you are on, and the endpoint you are using, there are various limits that apply when using the API.

Details of these limits are listed below.

Concurrency

The two week free trial is limited to maximum of 60 hits per minute. A hit is defined as 1 isochrone, or 1 route, or 1 matrix search.

After the two week free trial, a limit of 5 hits per minute applies.

Paid licences are either subject to custom concurrency limits, or no concurrency limits.

Matrix Size

This limit applies to the Travel Time Matrix, Travel Time Matrix (Fast), and Travel Time Matrix (Protobuf) endpoints.

The maximum matrix size that can be included in a single request is detailed by endpoint below.

EndpointMatrix Size
Travel Time Matrix10 x 2,000
Travel Time Matrix (Fast)10 x 100,000
Travel Time Matrix (Protobuf)1 x 200,000

Travel Time

The maximum travel time by endpoint is detailed in the table below.

EndpointTravel Time (hours)
Isochrone4*
Routes12
Travel Time Matrix4*
Travel Time Matrix (Fast)3
Travel Time Matrix (Protobuf)2

*Higher travel time limits are available on paid licence plans.

Level of Detail

This limit only applies to the Isochrone (Time Map) and the Isochrone Fast (Time Map Fast) endpoints.

It determines what values are permissible for the level_of_detail parameter, and applies both to the simple type (lowest to highest) and the simple_numeric type (-20 to 2).

The maximum level of detail by plan is detailed in the table below.

PlanLevel of detail
TrialMedium (0)
UnlimitedMedium (0)
Free RestrictedMedium (0)
CustomHighest (2)