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Difficulty: EasyStopping and Braking Procedures

When approaching a red traffic signal on a dry roadway, a truck driver is preparing to execute a standard, smooth stop. Which of the following braking actions should be taken just before the vehicle comes to a complete halt?

  1. A
    Apply sudden, maximum pedal pressure at the final moment to compress the suspension.
  2. Ease up on the brake pedal slightly to prevent the vehicle from jerking back.Answer
  3. C
    Engage the engine retarder at its highest setting to abruptly lock the drive axle.
  4. D
    Pump the brake pedal rapidly to exhaust system air pressure as the vehicle stops.

Answer

Ease up on the brake pedal slightly just before the vehicle comes to a complete stop to prevent jerking.
According to standard commercial vehicle driving procedures, pushing down gradually on the brake pedal and easing up slightly just before coming to a complete stop allows the suspension to unload gently, resulting in a smooth stop without a backward jerk.

Step-by-Step Solution

1
Apply gradual and steady pressure to the service brake pedal.
The commercial vehicle steadily decelerates as it approaches the stopping point.
Smooth initial application ensures controlled deceleration without unsettling cargo or passengers.
2
Modulate pedal force by easing up slightly on the brake pedal just before the wheels cease rolling entirely.
The vehicle suspension relaxes smoothly rather than rebounding harshly.
Releasing a small amount of braking force at the very end of a stop eliminates the backward jerk associated with abrupt stops.

Key Concept

Standard Stopping Procedure and Brake Pedal Modulation
Estimated Time:45s
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Topics

Stopping and Braking Procedures

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