Registry of Work Zone Data Feeds for Traffic Management

A registry lists metadata for active work zone data feeds conforming to the WZDx or CWZ standards. The dataset is maintained by the USDOT ITS DataHub and was last updated in March 2026. It serves as a directory for accessing current work zone information via API links from various organizations.

Use Cases

• Monitor active work zone feeds by filtering on the 'active' and 'state' columns for regional traffic planning.
• Assess data standardization by analyzing the 'version' and 'format' columns across different issuing organizations.
• Plan API integrations by checking the 'needAPIKey' and 'apiKeyURL' columns for authentication requirements.
• Track feed lifecycle and updates using the 'sdate' and 'edate' columns to understand data availability periods.

Strengths

• Includes a changelog tracking all additions, updates, and removals of feeds since February 2025.
• Feeds adhere to published JSON schemas for the WZDx Specification and CWZ Standard.

Limitations

• The number of active feeds and total row count is unknown, making scale assessment difficult.
• Some feeds require user registration for API keys, creating a barrier to immediate data access.
• Sample data is unavailable for previewing actual feed content.

Provenance

Source

USDOT ITS DataHub (datahub.transportation.gov).

Collection Method

Registered by organizations publishing work zone data feeds that meet the WZDx or CWZ standards.

Time Range

Feed metadata is current; referenced historical data archive covers parts of the period from 10/2019 to 08/2024.

Freshness

Updated regularly, with a last update date of 2026-03-27.

Geography

Primarily covers the United States, with a 'state' column for location.