AZ511 API

Transportation / API Key Intermediate HTTPS
42 D
Measured Score 0 50 100 Speed 1/30 Consistency 13/20 Security 20/20 Browser access 0/15 Transparency 8/15 TESTED 2026-08-10

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.

AZ511 data via REST API

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.

JSON Response · Illustrative
{
  "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.

Request
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.

HTTP 404 Requesting a path that does not exist application/json
{
  "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.

403 Forbidden API key is missing or has not been approved yet.
Include key=YOUR_API_KEY in the query string and ensure your request has been approved by the AZ511 team.
No events returned There are no active incidents on Arizona highways at the time of the request.
This is a valid empty response; implement logic to display a no active events message to users.
Malformed JSON Occasional server-side formatting issues can occur.
Wrap your JSON parse call in a try-catch and retry the request if parsing fails.

Measured Score Breakdown

Live HTTP request to the API endpoint

Speed 1/30
Consistency 13/20
Security 20/20
Browser access 0/15
Transparency 8/15
Endpoint Response Time 1816ms

Fully tested on Aug 10, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS UNKNOWN
Category Transportation
Difficulty Intermediate
Endpoint last called: 2026-08-10

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