Road511 API Examples

Code examples for the Road511 Traffic Data API — real-time traffic events, cameras, signs, bridge clearances, weight restrictions, and truck routes across 65 US and Canadian jurisdictions.

Quick Start

1. Sign up for a free API key (14-day trial, no credit card)
2. Set your key as an environment variable:

   export ROAD511_API_KEY="sk_live_your_key_here"

3. Run any example below

Examples

File	Language	Description
examples/curl.sh	curl	All major endpoints in one script
examples/python_events.py	Python	Query traffic events with filters
examples/python_truck_corridor.py	Python	Truck corridor — bridges, weight limits, restrictions along a route
examples/javascript_features.mjs	JavaScript	Fetch cameras, signs, weather stations near a location
examples/go_geojson.go	Go	Stream events as GeoJSON and save to file
postman/road511.postman_collection.json	Postman	Full collection — import into Postman

API Overview

Base URL: https://api.road511.com/api/v1

Authentication: Pass your API key via header or query param:

X-API-Key: sk_live_your_key_here

or

?api_key=sk_live_your_key_here

Core Endpoints

Endpoint	Description
GET /events	Traffic incidents, closures, construction, weather advisories
GET /events/geojson	Same data as GeoJSON FeatureCollection
GET /events/{id}	Single event by ID
GET /features?type=cameras	Traffic cameras with image URLs
GET /features?type=signs	Dynamic message sign content
GET /features?type=weather_stations	RWIS weather station readings
GET /features?type=rest_areas	Rest areas, truck parking
GET /features?type=bridges	Bridge clearances (621K from NBI)
GET /features?type=weight_restrictions	Weight-posted roads and bridges
GET /features?type=truck_routes	STAA truck routes (FHWA)
GET /features?type=ev_charging	EV charging stations (NREL)
GET /features/geojson	Features as GeoJSON
GET /features/{id}/details	Full detail for a single feature
GET /truck/corridor	All truck restrictions along a route corridor
GET /jurisdictions	List of 65 supported jurisdictions
GET /stats	Active event and feature counts

Common Query Parameters

Parameter	Example	Description
jurisdiction	CA	Filter by US state or Canadian province code
type	incident	Event type: incident, construction, closure, special_event, etc.
severity	major	Severity: critical, major, moderate, minor, info
bbox	-124,32,-114,42	Bounding box (west,south,east,north)
lat + lng + radius_km	47.6,-122.3,50	Radius search
road	I-95	Filter by road name
limit	100	Results per page (default 50)
offset	50	Pagination offset

Data Coverage

• 65 jurisdictions — all 50 US states + 13 Canadian provinces/territories + DC + SF Bay
• Traffic events — incidents, construction, closures, weather advisories, lane restrictions
• 28+ feature types — cameras, signs, weather stations, rest areas, EV charging, bridges, truck routes, weight restrictions, and more
• Updated every 1-5 minutes depending on source

Links

• Landing page — overview and pricing
• API Documentation — full endpoint reference with examples
• Interactive Map — live traffic map demo
• Developer Portal — sign up, manage API keys, view usage
• Swagger UI — interactive API explorer

License

These examples are MIT licensed. The Road511 API itself requires an API key — see pricing.