TriMet Bus Tracker

Real-time transit tracker for Portland, OR's TriMet system — bus, MAX Light Rail, Streetcar, and WES Commuter Rail.

TriMet and TransitTracker are registered trademarks of TriMet. All rights reserved.

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Features

• Real-time arrivals — check upcoming departures at any stop
• Route browser — explore routes, directions, and stops in a 3-tab view
• Nearby stops — find stops around your current location via GPS
• Favorites & recent stops — save frequent stops locally in SQLite
• QR code scanning — scan a stop QR code to jump straight to arrivals (CameraX + ML Kit)
• Service alerts & detours — view active TriMet alerts for routes and stops
• Dynamic theming — Material 3 with Android 12+ dynamic color support

Screenshots

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Building

1. Prerequisites: JDK 17 and Android SDK platform 37.
2. Get an API key: Register for a free key at developer.trimet.org.
3. Set the key:

   export TRIMET_API_KEY=your_key_here

4. Build the debug APK:

   ./gradlew assembleDebug

5. APK location: app/build/outputs/apk/debug/

License

This project is licensed under the MIT License — see the LICENSE file for details.

The app uses TriMet's public Web Services API. TriMet data and trademarks remain the property of TriMet.