While driving downhill on a steep mountain pass, a driver decides to shift the transmission into neutral and rely solely on the foot brakes to control vehicle speed. Which statement accurately explains why this driving practice is hazardous?
- It deprives the vehicle of engine braking, forcing the foot brakes to absorb all downhill momentum, which leads to extreme brake overheating and brake fade.Cevap
- BIt is permissible under traffic law as long as the vehicle's speed does not exceed the posted numerical speed limit.
- CIt requires the driver to apply the foot brakes continuously and forcefully to regain tire traction during downhill coasting.
- DIt is mandatory whenever driving past diamond-shaped yellow warning signs that illustrate a steep incline percentage.
Cevap
It deprives the vehicle of engine braking, forcing the foot brakes to absorb all downhill momentum, which leads to extreme brake overheating and brake fade.
Shifting a vehicle into neutral disengages the engine from the drivetrain, preventing engine compression braking. On steep downgrades, selecting a lower gear allows engine braking to absorb kinetic energy naturally. Without engine braking assistance, continuous pressure on foot brakes causes friction pads and fluid to overheat, resulting in severe brake fade or total mechanical failure.
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Anahtar Kavram
Engine braking utilization and brake fade hazard mitigation on mountain slopes