Why GTSS Builder?
Complete Signal Config
Define signals, phases, detectors, and movements in one place with intuitive controls.
100% Private
All data stays in your browser. No servers, no uploads, complete privacy.
Standard Export
Export to GTSS format—ready for any compatible traffic management system.
Free Forever
No subscriptions, no limits. Build as many signal configurations as you need.
How It Works
Add Your Signals
Create signal entries with IDs, locations, and approach details. Map coordinates or enter manually.
Configure Phases & Detectors
Define traffic movements, assign lanes, and link detector channels to each phase.
Export & Deploy
Generate standard GTSS text files ready for use in your traffic management systems.
Key Features
📍 Signal Management
Create and organize multiple traffic signals with location data, approach names, and custom IDs for easy tracking.
⚙️ Phase Configuration
Define movement types (through, left-turn, right-turn), lane counts, and approach bearings to match your controller setup.
🎯 Detector Integration
Map physical detection channels to phases with precise positioning and detection object types (vehicle, pedestrian, bicycle).
📥 Import Existing Data
Upload your current GTSS files to edit and refine configurations without starting from scratch.
✓ Standards Compliant
Exports generate the four standard GTSS files (agency.txt, signals.txt, phases.txt, detectors.txt) in proper format.
✓ Rapid Configuration
Easily add multiple signals for streamlined configuration.
Ready to Get Started?
No signup required. Start building traffic signal configurations in seconds.
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