Intelligent Speed Assistance (ISA)
Intelligent speed assistance warns the driver when the car exceeds the detected speed limit and can help keep speed within it.
What is Intelligent Speed Assistance (ISA)?
It has been required on all new cars sold in the EU since July 2024. Depending on the system, it uses sounds, vibration, a flashing display or resistance in the accelerator pedal. The driver can override it by pressing the accelerator harder, and it can usually be switched off for a journey.
How it works
The car compares its own speed with the limit from traffic sign recognition and map data and reacts when the limit is exceeded.
Why it matters for your car
In the EU the system switches on again every time the car is started, even if it was turned off before. Wrong sign readings can cause unnecessary warnings, so check the actual signs.
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