Transportation — entry 027 of 69
Road511
Road511 is a commercial aggregator that normalizes real-time 511 feeds from all 50 US states, 13 Canadian provinces, and federal sources (FHWA, WZDx, NWS, EIA fuel prices) into one REST schema covering incidents, cameras, signs, bridge clearances, and truck-corridor hazards. Access is keyed via an X-API-Key header across a tiered plan (14-day free trial through Enterprise), and a truck-routing endpoint layers hazard/clearance-aware corridor analysis on top of the raw feed.
GreatAPIs Score
Embed this badge
<a href="https://greatapis.com/api/road511/"><img src="https://greatapis.com/badge/road511.svg" alt="Scored 67 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.
Developer reference
Tiered per-API-key caps: Free (14-day trial) 60 RPM/1,000 requests per day; Starter ($29/mo) 300 RPM/50,000 per day; Pro ($99/mo) 1,000 RPM/500,000 per day; Enterprise 5,000 RPM/unlimited per day, per road511.com/docs.html