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Difficulty: EasyEvasive Steering and Avoiding Collisions

A commercial driver traveling at highway speed suddenly encounters an unexpected obstruction blocking their lane with insufficient distance to stop safely. According to commercial driving emergency procedures, which action should the driver take to avoid a collision?

  1. A
    Apply the emergency brake firmly while keeping the steering wheel pointed straight ahead.
  2. B
    Slam on the service brakes while simultaneously making a sharp evasive turn.
  3. Steer smoothly around the obstruction without braking during the turn, then counter-steer to stabilize the vehicle.Answer
  4. D
    Accelerate sharply while swerving abruptly to power past the obstruction quickly.

Answer

Steer smoothly around the obstruction without braking during the turn, then counter-steer to stabilize the vehicle.
Steering around an obstacle is generally much quicker than stopping a heavy vehicle. Commercial driving safety standards dictate steering firmly into an open escape path without applying the brakes while turning, followed immediately by counter-steering to stabilize the vehicle.

Step-by-Step Solution

1
Recognize that evasive steering requires less distance than coming to a full stop.
Driver chooses an open escape path rather than attempting an impossible stop.
A commercial vehicle can be steered around an obstacle in a fraction of the distance required for a complete stop.
2
Turn the wheel firmly and smoothly into the clear path without applying the brakes.
The steer tires retain maximum cornering grip without locking up.
Applying the brakes during a sharp turn transfers load away from cornering grip and can induce wheel lockup and skidding.
3
Counter-steer immediately upon clearing the obstacle to straighten the vehicle in the lane.
The vehicle stabilizes safely in the new travel lane.
Counter-steering is necessary to prevent overshooting into oncoming traffic or leaving the roadway.

Key Concept

Evasive Steering and Counter-Steering Technique
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Topics

Evasive Steering and Avoiding Collisions

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