API Documentation

The REST API provides simple interfaces to most of the data available on the Mass511 website. The REST API enables developers to access essential data on the Mass511 website including Events, Alerts. This API enables developers to create mobile traffic apps for Massachusetts.

Notes:
  • Requires a developer key. For most calls, query string 'key' parameter is required.
  • Throttling is enabled. Ten calls every 60 seconds.

The following outlines the resources available via the Mass511 API.

ResourceDescription
Events

Returns all traffic events.
Alerts

Returns all emergency alerts.