M
API Matrix

Community Transit API

⭐ Beginner's Pick Transportation / No Auth Required Beginner HTTPS
Free to Use Varies (check documentation)
77 Score
Grade B
Visit Official Site Compare Alternatives

Overview

Community Transit (Transitland) is a free, open API that aggregates public transit data from hundreds of agencies worldwide including routes, stops, and schedules. No API key is required, making it very beginner-friendly for experimenting with transit data. It is a great starting point for building transit-aware apps without worrying about authentication.

💡

Beginner Tip

Use the Transitland API Explorer at https://www.transit.land/documentation to browse available endpoints and test queries in your browser before writing code. Start with the /routes endpoint to list transit routes by bounding box.

Available Data

Use case: Integrate transitland api data into web and mobile applications
Community Transit data via REST API
JSON-formatted response data
Freely accessible without authentication

Example Response

JSON Response 
{
  "route": "Line 1",
  "origin": "Station A",
  "destination": "Station B",
  "departure": "08:30",
  "arrival": "09:15",
  "status": "On Time",
  "delays_min": 0
}

Field Reference

onestop_id Globally unique identifier for a transit entity (operator, route, or stop) in the Onestop ID format.
name Human-readable name of the route or transit agency.
route_type GTFS route type integer: 0=tram, 1=subway, 2=rail, 3=bus, 4=ferry.
geometry GeoJSON LineString or MultiLineString representing the geographic path of the route.
operated_by_name Name of the transit agency that operates this route.

Implementation Example 

const url = "https://github.com/transitland/transitland-datastore/blob/master/";
const response = await fetch(url);
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.

Common Errors & Troubleshooting

404 Not Found Invalid or misspelled Onestop ID for an operator or route
✓ Search for the correct Onestop ID using the /operators endpoint or the Transitland Web UI at https://www.transit.land/.
Empty results array No agencies found in the specified bounding box coordinates
✓ Verify your lat/lon bounding box values are in the correct order (min_lat, min_lon, max_lat, max_lon) and cover a region with transit service.
422 Unprocessable Entity Query parameter value is out of the allowed range
✓ Check the API documentation for valid parameter ranges, especially when using the limit parameter (max 1000).

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 10/20
🔒 Security 15/15
🛠 Developer XP 15/20
✓ Reliability 7/15
Response Time 697ms

Fully tested on Apr 5, 2026

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS UNKNOWN
Category Transportation
Difficulty Beginner
Verified: 2026-04-04

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