On the A67 between Venlo and Eindhoven you are driving with adaptive cruise control. The car ahead brakes hard unexpectedly and you have not reacted yet. What does the autonomous emergency braking system do?
It warns you first and brakes by itself if you then do not intervene
It only warns you; you then have to do the braking yourself
It brakes hard by itself straight away, without warning you first
Explanation
False — the system does more than warn. If you do not intervene after the warning signal, the car brakes by itself (hard). Book p.219.