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U.S. Department of Transportation/Federal Highway Administration
Work Zone Data System (WZDS) Conceptual Architecture

The use of digital Work Zone Event Data (WZED) requires data repositories that support collecting, storing, disseminating, managing, maintaining, and archiving WZAD over the work zone life cycle. These data repositories are referred to as work zone data systems, or WZDS. WZDS may represent a single data repository for all of a transportation agency’s WZED, or WZDS may represent multiple data systems spread across an agency, each of which stores WZED during a different stage of the work zone life cycle.

The diagram below (i.e., the conceptual architecture), provides a way to understand how to organize WZED to manage dissemination and meet the needs of a broad range of stakeholders. It should be viewed as a menu of resources, providing a structure and the interfaces necessary for clearly and consistently communicating WZED between different internal and external data systems during planning and design, active operations, and post-work zone performance analyses.

The diagram is intended to be a menu to pick and choose from in order to create your agency-specific WZDS. ​


Download the Agency Work Zone Data System(s) poster. Size 24x36 (PDF)Size 36x48 (PDF).​

Identify and prioritize your agency data needs and future data management practices by reviewing over 50 types of WZED usage,
organized by the following seven WZED use categories:

  1. Work Zone Planning and Project Coordination
  2. Work Zone Impact Analyses
  3. Construction and Maintenance Contract Monitoring
  4. Real-Time System Management and Traveler Information Provision
  5. Safety and Mobility Performance Measurement
  6. Law Enforcement and Emergency Service Providers
  7. Connected and Automated Vehicle Hardware Needs and System Readiness