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Difficulty: EasyEvasive Steering and Avoiding Collisions

When an unexpected hazard suddenly appears in your travel lane and a clear escape route is available, which of the following best explains why commercial drivers are taught to steer around the obstacle rather than attempt an emergency stop?

  1. A
    A heavy vehicle's braking distance is always shorter than its perception distance, making brake application ineffective during emergencies.
  2. A commercial vehicle can almost always be turned to avoid an obstacle in less distance than it takes to come to a complete stop.Answer
  3. C
    Steering around an obstacle eliminates the requirement to calculate and maintain a safe following distance.
  4. D
    Commercial steering systems are designed with up to 45 degrees of free play to absorb the impact of sudden emergency turns.

Answer

A commercial vehicle can almost always be turned to avoid an obstacle in less distance than it takes to come to a complete stop.
According to standard commercial driver guidelines, steering around an obstacle is generally quicker and requires less linear distance than bringing a heavy commercial vehicle to a complete stop. When space permits and an escape route is open, evasive steering is the most effective collision avoidance action.

Step-by-Step Solution

1
Evaluate the distance required for stopping versus steering.
Recognize that stopping a heavy vehicle requires perception distance, reaction distance, and substantial braking distance.
At highway speeds, a fully loaded commercial vehicle requires hundreds of feet to stop completely.
2
Compare stopping capability to evasive maneuver requirements.
Identify that changing lanes or steering onto a clear shoulder can be accomplished in a fraction of the distance needed for a full stop.
Steering is quicker than stopping when an immediate collision hazard arises and an escape route exists.

Key Concept

Evasive Steering Advantage over Stopping
Estimated Time:45s
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Topics

Evasive Steering and Avoiding Collisions

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