Examkin

Soru

Zorluk: OrtaSkid Control and Recovery

You are steering a commercial motor vehicle through a rain-slicked curve on an exit ramp when the front wheels lose traction, causing the vehicle to slide straight ahead toward the outer shoulder despite the steering angle. What is the most effective action to regain steering control?

  1. A
    Turn the steering wheel more sharply into the curve to force the front tires to bite.
  2. Ease off the accelerator and refrain from braking to let the front tires regain rolling grip.Cevap
  3. C
    Apply the service brakes firmly to transfer weight forward onto the steer axle.
  4. D
    Activate the engine retarder at maximum setting to rapidly reduce vehicle momentum.

Cevap

Ease off the accelerator and refrain from braking to allow the front tires to resume rolling traction.
In a front-wheel skid, the front tires slide straight ahead because friction has been overcome. The correct recovery technique according to CDL standards is to ease off the accelerator and avoid applying the brakes, which allows the vehicle to decelerate naturally until the front tires regain rolling traction and respond to steering inputs.

Adım Adım Çözüm

1
Recognize the condition as a front-wheel skid (understeer) where the vehicle travels straight ahead regardless of steering input.
Identifies that the front tires have lost rolling grip due to excessive speed for road conditions or abrupt control inputs.
Steering control depends entirely on rolling friction between the steer tires and the road surface.
2
Release the throttle smoothly and avoid touching the brake pedal or aggressive steering adjustments.
Vehicle speed gradually drops without locking wheels, allowing the steer tires to spin up to matching road speed and re-establish directional grip.
The only way to stop a front-wheel skid is to let the vehicle slow down naturally until rolling traction is restored.

Anahtar Kavram

Front-wheel skid recovery requires letting the vehicle slow down without braking or abrupt steering to restore rolling traction to the steer axle.
Tahmini Süre:1m 0s
Bu soruyu puanla

Konular

Skid Control and Recovery

Bu konudan daha fazla soru