Predictive Traffic Signal Timing API for Navigation

C6/10April 29, 2026
WhatAn API that provides real-time and predictive traffic light phase-and-timing data to navigation apps, enabling green-wave routing and accurate ETAs through signalized intersections.
SignalCommenters noted that the system captures not just current signal state but also predicted next-phase timing, and showed interest in historical analytics like wait times at crosswalks — pointing to demand for signal-aware routing that no consumer navigation app currently offers well.
Why NowC-ITS SPaT (Signal Phase and Timing) broadcasts are being deployed across European cities right now under EU ITS Directive mandates, creating a standardized data source that did not exist at scale even two years ago.
MarketNavigation platforms (Google Maps, Waze, Apple Maps), autonomous vehicle companies, and logistics optimizers; Google alone spends billions on mapping data; Audi's GLOSA (Green Light Optimized Speed Advisory) proved consumer appetite but had limited city coverage.
MoatProprietary historical signal-timing dataset enables prediction accuracy that improves with time and cannot be replicated without months or years of continuous collection across the same intersections.
OpenTrafficMap View discussion ↗ · Article ↗ · 320 pts · April 29, 2026

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