What is a “speed retarder”?

Choose an answer to test yourself:

1. AAn electric or hydraulic mechanism, independent of the vehicle’s braking system, which decelerates the vehicle when operated.
2. BAn electronic system which automatically operates the brakes while driving on a steep decent, thus preventing brake overheating and brake loss.
3. CA system installed in the vehicle that assists in emergency braking and stops the vehicle on the spot.
4. DAn electric mechanism installed in the braking system that shuts-off the engine and helps the vehicle to maintain constant speed on all roads.

Topic: Traffic Rules · עברית