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Zorluk: OrtaStopping and Braking Procedures

During an unexpected highway obstruction, a freight hauler must perform an emergency stop without locking the wheels. When utilizing the controlled braking technique, what is the proper action if the vehicle begins to skid or requires a significant steering adjustment?

  1. A
    Maintain maximum pedal pressure while turning the steering wheel firmly to steer through the skid.
  2. B
    Engage the engine retarder to maximum power to slow the drive wheels without releasing the foot brake.
  3. Release the brakes fully, make the necessary steering adjustment, and reapply the brakes as soon as the vehicle path stabilizes.Cevap
  4. D
    Hold the service brakes completely locked until the vehicle comes to a complete standstill to minimize mechanical braking distance.

Cevap

Release the brakes fully, make the necessary steering adjustment, and reapply the brakes as soon as the vehicle path stabilizes.
According to official CDL stopping and braking guidelines, controlled braking involves applying the brakes as hard as possible without locking the wheels. If the wheels lock up or if a significant steering correction is necessary, the driver must release the brakes immediately to regain rolling traction and directional control, steer as needed, and reapply the brakes as soon as the vehicle trajectory is aligned.

Adım Adım Çözüm

1
Identify the primary rule of controlled braking during emergency stops
Controlled braking requires applying the brakes as hard as possible while keeping the wheels rolling and making only very small steering adjustments.
Steering control depends entirely on maintaining rolling traction between the tires and the road surface.
2
Determine the necessary reaction when wheels lock or large steering inputs are required
The driver must immediately release the service brakes to restore rolling traction before turning the steering wheel.
Turning the steering wheel while brakes are locked will not alter the vehicle's trajectory and will induce an uncontrollable skid.
3
Execute the recovery and final stopping sequence
Reapply the brakes firmly once the steering maneuver is completed and the vehicle is aligned.
Reapplication of the brakes completes the emergency stop safely without losing directional control.

Anahtar Kavram

Controlled braking procedure, rolling traction maintenance, and steering recovery during emergency stops
Tahmini Süre:1m 0s
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Konular

Stopping and Braking Procedures

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