INRIX launches ‘Signal Analytics API’, to help cities optimize traffic lights and cut congestion

12 August 2025

INRIX has rolled out a new Signal Analytics API that gives cities, transportation agencies and mobility companies detailed, intersection-level insights into traffic signal timing and performance. The tool delivers real-time and historical signal data and performance metrics so planners and developers can spot delays, tune timings, support transit priority, and reduce emissions — without needing to deploy new roadside sensors.

What the Signal Analytics API does-

• Provides intersection-level signal timing and phase information, plus performance metrics (e.g., delays, stops, phase efficiency).
• Combines signal data with INRIX’s traffic and travel-time feeds for richer context and analysis.
• Offers both real-time feeds and historical data for trend analysis and before/after evaluation.
• Designed for integration into traffic management systems, smart-city platforms, transit priority systems, and mobility apps.
• Delivers anonymized, aggregated outputs so agencies can act on patterns without exposing sensitive data.

Key benefits-

• Faster identification of bottlenecks and poorly timed signals so agencies can prioritize fixes.
• Improved traffic flow and potential reductions in idling, fuel use and emissions.
• Better support for transit signal priority, emergency vehicle preemption and pedestrian safety improvements.
• Enables data-driven decisions for signal retiming and adaptive control strategies without large hardware investments.

Who benefits-

• City traffic engineers and regional transportation agencies
• Transit operators and emergency services
• Mobility companies, fleet operators and third‑party app developers
• Smart-city integrators and urban planners

How agencies and developers can use it-

• Integrate the API into existing traffic management platforms to automate detection of problem intersections.
• Use historical analysis to measure the impact of retiming projects or new infrastructure.
• Combine INRIX traffic feeds with signal analytics for route optimization and real-time routing decisions.

Where to learn more
For full technical details, pricing and integration guidance, visit INRIX’s blog and developer pages.