Road511 provides the traffic infrastructure data that fleet managers, navigation developers, logistics platforms, and risk analysts actually need — and can't get anywhere else.
No other API gives you bridge clearances, weight restrictions, and truck routes in one call. Road511 lets you check an entire corridor for height/weight conflicts before dispatch — not after a driver is already on the road.
FHWA NBI + state inventories with height, weight, posting status, and condition ratings.
STAA National Network polylines — where large trucks have a legal right to operate.
Seasonal weight restrictions from MN, WI, MI, ON, QC, NS with active date ranges.
Pass origin, destination, vehicle height and weight — get every conflict along the route.
HERE and TomTom sell traffic flow. Road511 gives you the infrastructure data they don't — 10,000+ camera feeds, DMS sign messages, road surface conditions, and weather station readings. GeoJSON-native, ready for Leaflet or Mapbox.
Direct image and stream URLs from 40+ states. Refresh every 1–5 minutes.
Real-time text displayed on highway dynamic message signs across 30+ jurisdictions.
Surface state (dry, wet, icy, snow-covered) and chain requirements from 15+ states.
Every endpoint has a /geojson variant. Drop responses directly into your map layer.
Check corridor reliability, active closures, and seasonal restrictions before dispatching. Road511 tracks event lifecycles — when an incident started, how it escalated, and when it cleared — so you can build smarter ETAs.
Incidents, construction, closures, and weather events across 57 jurisdictions with severity levels.
Full event history — severity changes, lane updates, ETAs — for clearance time prediction.
Top corridors by incident frequency, clearance time P50/P95, and reliability scoring.
Rest stops with amenity data, truck parking availability, and open/closed status.
Road511's analytics endpoints give you the data to build risk models. Incident frequency by corridor, clearance times by severity, weather conditions at the time of each event, and geographic clustering — all via API.
Nearest weather station conditions captured at event creation time. Aggregate stats by precipitation and road surface.
Geographic clustering of incidents by configurable grid size. See where events concentrate.
Event time-series by hour, day, or week — grouped by type, severity, or jurisdiction.
P50 and P95 clearance times by event type, jurisdiction, and severity for SLA modeling.
Municipal and regional agencies need to see traffic conditions beyond their own borders. Road511 normalizes data across jurisdictions so you can monitor a metro area that spans multiple states or provinces without integrating each one separately.
Monitor events across state and provincial borders with consistent data format and severity levels.
Query by geographic area, not jurisdiction — get everything within your region of interest.
Bridge conditions, weather stations, road conditions, and EV charging for infrastructure planning.
Track fetch success rates and data freshness per source for data quality assurance.