Question

Technician a says although four-wheel disc brakes have become standard equipment of most cars and light trucks, drum brakes continue to be in use for a few rear-wheel brakes. technician b says no law or regulation requires disc brakes, but the brake performance requirements of fmvss 105 make front disc brakes virtually mandatory. who is correct?

Group of answer choices
O A only
O B only
O Both A and B
O Neither A nor B

Answer 1

Both Technician A and B are correct: four-wheel disc brakes are standard on most vehicles, but drum brakes are still used on some rear wheels, and while there's no law mandating disc brakes, FMVSS 105 makes them largely necessary for front wheels.

Step-by-step explanation:

Both Technician A and Technician B are correct regarding the use of disc brakes and drum brakes on modern vehicles. Technician A states that four-wheel disc brakes have become standard equipment for most cars and light trucks, yet some rear-wheel brakes continue to use drum brakes. This is true since certain manufacturers still choose to use drum brakes for the rear wheels, primarily for cost reasons.

Technician B mentions that no law specifically mandates disc brakes, but the brake performance requirements set by the Federal Motor Vehicle Safety Standards (FMVSS) 105 make front disc brakes almost necessary. FMVSS 105 sets performance criteria that front disc brakes are more likely to meet, hence their prevalence. Therefore, the answer is that both A and B are correct.