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U.S. Department of Transportation/Federal Highway Administration

Work Zone Event Data (WZED): Data Dictionary Report

The draft document below provides digital descriptions of work zone activities that enable and support transportation agencies and third-party providers to describe and communicate work zone-related information to agency, private sector, and public users timely and seamlessly across multiple jurisdictions and regions.

Questions? Please contact Todd Peterson (, FHWA Work Zone Management Team Transportation Specialist and Project Manager for the WZDI.

Download the latest DRAFT Data Dictionary ​​​​​​​​