API Documentation

The REST API provides simple interfaces to most of the data available on the 511WI website. The REST API enables developers to access essential data on the 511WI website including Traffic Speeds, Incidents, Roadwork, and Cameras. This API enables developers to create mobile traffic apps for Wisconsin.

Notes:

Requires a developer key. For most calls, query strings key={developerKey} and format={XmlOrJson} is required.
Throttling is enabled. 10 calls every 60 seconds.

A registered account is needed before you can sign up for a Developer API key. For new users, sign up for an account; otherwise log in and then you can request for an API key here. The Developer API key info will display here as well.

The following outlines the resources available via the 511WI API.

Api Calls
Resource	Description
GET GetEvents	Returns all event types.
GET GetCameras	Returns all cameras.
GET GetMessageSigns	Returns all VMS.
GET GetAlerts	Returns all traffic alerts.
GET GetWinterRoadConditions	Returns all winter road conditions.

TPIMS

The Truck Parking Information Management System (TPIMS) API guidance provides a recommended approach for implementing web services that will facilitate the sharing of truck parking availability data with other users. The data elements and formatting were agreed upon by the eight states participating in the MAASTO TPIMS project and are intended to set a standard for future projects.

Click on the TPIMS website for more API documentation.

Access the TPIMS API:

Developers Access Agreement for 511 API