Overview
AZ511 is the official Arizona Department of Transportation traffic data API providing real-time road conditions, incidents, and camera information for Arizona highways. It is useful for building local traffic apps or commute tools focused on the Arizona road network. An API key is required and can be requested through the AZ511 developer portal.
Beginner Tip
Start by querying the /events endpoint to see active incidents and road closures as it is the most frequently updated resource. Filter by event_type to separate accidents, construction, and weather events.
Measurement Record
What actually happened when we called this API from our own infrastructure. Every value below was recorded by the request, not copied from the provider's documentation.
- Request
- GET https://az511.com/api/wzdx
- Result
- HTTP 200 · application/json · 5,384,252 bytes · compressed
- Response time
- 1816 ms (median of 3) · fastest 1494 ms
- Transport
- TLSv1.3 · TLS_AES_128_GCM_SHA256 · certificate issued by Amazon
- Browser CORS
- No Access-Control-Allow-Origin header — call it from a server, not the browser
- Recorded
- 2026-08-10
Available Data
The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.
Example Response
Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.
{
"route": "Line 1",
"origin": "Station A",
"destination": "Station B",
"departure": "08:30",
"arrival": "09:15",
"status": "On Time",
"delays_min": 0
} Field Reference
ID Unique identifier for the traffic event. EventType Category of the event such as ACCIDENT, CONSTRUCTION, or WEATHER. Severity Impact level of the event on traffic flow such as LOW, MEDIUM, or HIGH. RoadwayName Name or number of the affected road or highway. Latitude Geographic latitude of the event location. Longitude Geographic longitude of the event location. Implementation Example
Calls a real endpoint of this API. Replace any placeholder credentials with your own key.
const url = "https://www.az511.com/api/v2/get/event?key=YOUR_API_KEY";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"X-API-Key": "YOUR_API_KEY"
}
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
How This API Fails
We deliberately sent this API a broken request and recorded exactly what came back on 2026-08-10. Knowing the shape of an error before you hit it makes error handling much easier to write.
{
"message": "No HTTP resource was found that matches the request URI 'http://az511.com/api/wzdx/apisscore-nonexistent-path'."
} Common Errors & Troubleshooting
Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.
Measured Score Breakdown
Live HTTP request to the API endpoint
Fully tested on Aug 10, 2026
Technical Specifications
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