>There will be four ways in which ISA systems will work to slow the vehicle down, and it will be up to the manufacturers to pick which one they want to use. The EU regulations permit a system that can use a cascaded acoustic warning, a cascaded vibrating warning, an accelerator pedal with haptic feedback, or a speed control function in which the speed of the vehicle will be gradually reduced.

This is more like a "speed warner" than a "speed limiter".