Soru

Zorluk: OrtaBrake Failure Management

You are approaching a red traffic light on a wet city street when your foot brake pedal suddenly drops to the floorboard and fails to slow your vehicle. What is the safest immediate sequence of actions to regain control and bring the car to a stop?

  1. Pump the brake pedal rapidly several times, downshift to a lower gear, and apply the parking brake gently while holding the release button.Cevap
  2. B
    Slam the parking brake handle upward quickly into the fully locked position to engage maximum emergency braking power immediately.
  3. C
    Turn the ignition switch completely to the lock position to turn off the engine and allow engine drag to stop the car.
  4. D
    Shift the gear selector directly into Park or Reverse while maintaining maximum steering pressure toward the curb.

Cevap

Pump the brake pedal rapidly several times, downshift to a lower gear, and apply the parking brake gently while holding the release button.
Pumping the brake pedal rapidly may restore hydraulic pressure in a partially failing brake system. Downshifting uses engine braking to decrease speed safely, and modulating the parking brake while holding its release lever slows the vehicle without locking the rear wheels.

Adım Adım Çözüm

1
Pump the foot brake pedal rapidly.
Attempts to build up hydraulic pressure in case one circuit of the dual-braking system is still functional.
Most modern vehicles have dual hydraulic circuits; pumping may restore enough fluid pressure to slow the car.
2
Shift the transmission into a lower gear.
Engages engine braking to naturally reduce vehicle speed without using wheel brakes.
Lower gears utilize engine resistance to decelerate the drive wheels safely.
3
Gently apply the parking/emergency brake while holding the ratchet release button.
Provides controlled mechanical braking to the rear wheels.
Holding the release button prevents the rear wheels from locking abruptly, allowing gradual modulation of friction.

Anahtar Kavram

Brake Failure Management
Bu soruyu puanla