Work Zone Data Exchange (WZDx) – FHWA Office of Operations
The Work Zone Data Exchange (WZDx) initiative is a Federal Highway Administration effort to create an open, standardized specification for publishing and sharing data about work zone activity on public roads. The goal is to improve safety and mobility by enabling infrastructure owners and operators to supply harmonized, real‑time information about work zones — such as lane closures, traffic restrictions, and worker presence — in a consistent format that can be used by third parties, including navigation systems and automated driving systems (ADS).
The page provides an overview of the WZDx Specification, its development history (including multiple versions and updates to support smart work zone devices and additional data types), and its relevance to broader data initiatives like the Work Zone Data Initiative (WZDI). It also highlights demonstration grants awarded to states and local agencies to produce work zone data feeds and encourages stakeholder engagement for adoption and implementation.