Step 3 » GENERAL learning environment Category C (C, C1)

GENERAL Learning Environment Category C (C, C1)
Question 162 of 533

To obtain increased effectiveness, the electromagnetic retarder must be used:

A at the same time with the retarder on the exhaust;
B at the same time with the parking brake;
C independent of the service brake.

Explanation

Explanation text category C / driving tests drpciv:
Buses and heavy trucks have, in addition to the wheel brake, other deceleration devices. The exhaust brake (engine brake) is a retarder that interrupts the diesel supply and blocks the exhaust gases. The electromagnetic brake is a retarder that brakes the cardan shaft (the transmission), with the help of an electromagnet.
Therefore to obtain increased effectiveness, the electromagnetic retarder must be used at the same time with the retarder on the exhaust.
Correct answer: A
 
Driving tests drpciv category C explained.

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