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Question

Difficulty: HardSpace for Turns

You are operating a 53-foot tractor-trailer approaching a tight right turn onto a narrow two-lane cross street. To properly compensate for trailer off-tracking while preventing other motorists from attempting to pass on your blind side, which procedure should you follow?

  1. A
    Swing wide to the left before reaching the intersection to create turning clearance, then steer sharply right into the cross street.
  2. Keep the vehicle close to the right curb on approach, drive straight into the intersection, and swing wide into the cross street as you complete the turn.Answer
  3. C
    Straddle the center line 100 feet before the intersection and cut tightly across the right curb apex into the nearest receiving lane.
  4. D
    Move entirely into the opposing oncoming lane prior to the intersection so the trailer tracking path stays centered in the original lane.

Answer

Keep the vehicle close to the right curb on approach, drive straight into the intersection, and swing wide into the cross street as you complete the turn.
The correct method is to execute a button-hook turn. By keeping the rear of the vehicle close to the curb upon approach, you block motorists from attempting to pass on your right side. Pulling straight forward into the intersection and swinging wide into the receiving street as you complete the turn provides the necessary clearance for trailer off-tracking.

Step-by-Step Solution

1
Analyze the turning mechanics and risk factors of long combination vehicles.
Due to off-tracking, the trailer wheels follow a significantly shorter path than the tractor's steer wheels.
Understanding off-tracking geometry is essential to prevent curb clipping and side-swipe collisions.
2
Evaluate approach positioning to control adjacent traffic lanes.
Maintaining a position close to the right curb blocks the right side and eliminates space for other vehicles to pass.
If an opening is left on the right, smaller vehicles may attempt to pass on the blind side and become pinned.
3
Select the correct turning maneuver pattern.
Perform a button-hook turn by advancing into the intersection before turning wide into the cross street, rather than executing an unsafe jug-handle turn.
Swinging wide late in the turn accommodates trailer off-tracking safely without exposing the right side.

Key Concept

Button-Hook Turning vs. Jug-Handle Turning and Off-Tracking Prevention
Estimated Time:1m 30s
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Topics

Space for Turns

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