Wisconsin Traffic Operations and Safety Laboratory
The WisTransPortal Project

The WisTransPortal contains a complete archive of Wisconsin DOT (WisDOT) MV4000 Traffic Accident Extract data from 1994 through the current year. This data is provided to TOPS by WisDOT DMV-Traffic Accident Section on a regular basis. The WisTransPortal contains information on all reported¹ crashes in Wisconsin, including the location of each crash, vehicles involved, and general crash attributes.

There are two ways to obtain Wisconsin crash data from TOPS Lab:

• Submit a Crash Data Request Form: Crash data is available upon request to anyone in the general public, including government, media, engineering consultants, law firms, non-profit organizations, and individuals. TOPS Lab will provide a data file of crash records based on date range and location.

• Request a WisTransPortal login account: Login access to the WisTransPortal for crash data retrieval is available to Wisconsin state and local government, including WisDOT, county highway commissions, MPOs, and police departments. The WisTransPortal provides direct access to crash data through online data selection and retrieval tools.

Yearly crash extracts can also be obtained directly from WisDOT Traffic Accident Section by completing the WisDOT Crash Data Extract Request Form.

¹ Traffic crashes are, by statutory definition, "reportable" if someone is killed or injured, or if the property damage exceeds a certain threshold. The definition of a "reportable crash" changed starting January 1, 1996. For a Property Damage Only crash, the reporting threshold was raised from $500 to $1,000 to "any one person’s property". Government-owned property changed to $1,000 for government-owned vehicles, and remained at $200 for all other government-owned property, such as traffic control devices.