EU proposes satellite‑enforced speed limits for new cars from 2030

The European Union, which has required an Intelligent Speed Assistance (ISA) system on all new cars sold since July 2024, is considering extending the rule. A draft proposal would make a satellite‑based automatic speed‑limit enforcement system mandatory for every vehicle first registered after 2030. The technology would combine satellite positioning with onboard sensors to determine the car’s location, compare it with the local speed limit and, if the driver exceeds the limit, reduce engine power.

Current ISA systems only warn drivers, emit an audible alert and can adjust speed when adaptive cruise control is active; drivers may temporarily override them. Critics warn that automatic throttling could undermine driver control and create new safety risks, especially given existing inaccuracies. Tests by Thatcham Research show that while ISA accuracy is about 98 % when measured over distance, it falls to roughly 90 % at individual speed‑change events, with errors roughly one in four. Misread limits such as 5 mph or 100 mph have been reported in the UK.

Supporters argue that automatic enforcement could substantially cut road fatalities, but the proposal has no official EU decision yet and could face political and public resistance.