TomTom on Wednesday introduced Unified Speed Restrictions, a new feature that combines the company’s static, temporary and live speed limit data into a single, high-precision layer to improve accuracy for Intelligent Speed Assistance (ISA), advanced driver assistance systems (ADAS) and automated driving.
The technology fuses permanent speed limits, unsigned restrictions, roadside camera detections, event-based changes and real-time updates into one consistent feed. It aims to deliver higher reliability in complex or changing conditions, helping automakers meet or exceed regulatory requirements for ISA while supporting predictive functions in ADAS and higher levels of automation.
TomTom said the unified approach addresses gaps where traditional map data alone may miss temporary or conditional limits, providing a more complete picture for vehicle systems.
Competitors in the ISA Space
HERE Technologies offers its HERE ISA Map with speed limit coverage in more than 180 countries, supporting explicit and implicit limits. It provides daily updates through connected layers and powers systems for more than 70 brands from over 30 automakers, focusing on compliance with EU mandates and global safety needs.
Mapbox provides an ADAS SDK with daily-updated speed limit data, including conditional and temporary restrictions, achieving more than 95% coverage to exceed ISA regulatory thresholds. Its solution emphasizes low-bandwidth efficiency, cloud-to-onboard integration and additional attributes such as road curvature and slope for predictive cruise control and other ADAS functions.
Overall, TomTom’s launch comes as global regulations increasingly mandate ISA in new vehicles, pushing mapping companies to deliver fresher, more accurate speed data for both safety compliance and advanced autonomy.
