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Zorluk: ZorSpace for Turns

While navigating an urban delivery route, a commercial driver must make a sharp 90-degree right turn onto a narrow cross street. Because the vehicle's wheelbase creates significant off-tracking, extra clearance is required to prevent the rear wheels from mounting the curb. Which procedure must the driver execute to safely complete the turn while preventing other motorists from passing on the right?

  1. A
    Swing wide to the left into the adjacent lane before initiating the right turn to maximize the turning arc before entering the intersection.
  2. Keep the vehicle close to the right curb on the approach, drive straight into the intersection until the turn pivot point is reached, and then swing wide into the cross street if necessary.Cevap
  3. C
    Hug the right curb continuously throughout the entire turn while increasing vehicle speed to pull the trailing axles over the corner radius.
  4. D
    Move toward the oncoming lane before the intersection and initiate a sharp, early steering input prior to the front wheels reaching the cross street.

Cevap

Keep the vehicle close to the right curb on approach, pull forward into the intersection, and swing wide into the cross street if necessary (a button-hook turn).
To safely execute a tight right turn and manage off-tracking, commercial drivers must perform a button-hook turn. By keeping the vehicle close to the curb during the approach, the driver prevents following vehicles from attempting to pass on the right. Pulling straight into the intersection before turning and swinging wide into the cross street allows the off-tracking rear wheels to clear the curb safely.

Adım Adım Çözüm

1
Analyze the collision hazard created by swinging wide to the left prior to reaching an intersection.
Identify that swinging left before initiating a right turn opens a gap on the right, leading to dangerous squeeze-play collisions with trailing motorists.
Following drivers frequently mistake a leftward veer for a lane change or left turn and attempt to pass on the open right side.
2
Establish the correct lane positioning on approach to block following traffic.
Position the vehicle close to the right-hand curb when approaching the intersection.
Blocking the right side eliminates the space required for smaller vehicles to pull up along the passenger side.
3
Determine the proper vehicle path through the intersection (button-hook maneuver) to accommodate off-tracking.
Drive straight past the curb line into the intersection before turning the steering wheel, swinging wide into the destination street if additional clearance is required.
Squaring off the turn brings the pivot point forward so the off-tracking rear wheels follow a safe arc inside the roadway without clipping the corner curb.

Anahtar Kavram

Button-hook right turn procedure and squeeze-play hazard prevention
Tahmini Süre:1m 30s
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Space for Turns

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