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Question

Difficulty: HardSpace for Turns

A driver operating a 53-foot tractor-trailer approaches a busy intersection featuring two designated left-turn lanes that feed into a multi-lane highway. To prevent off-tracking conflicts with adjacent vehicles and maintain proper side clearance throughout the maneuver, which lane should the driver select and how should the turn be executed?

  1. A
    Select the left-hand (inside) turn lane, begin steering left immediately upon entering the intersection, and hold the trailer tight against the inner median curb.
  2. Select the right-hand (outside) turn lane, bring the vehicle forward to the center of the intersection before initiating the turn, and stay in the outside lane.Answer
  3. C
    Select the left-hand (inside) turn lane, but swing the tractor wide to the right into the adjacent turn lane midway through the intersection to create trailer clearance.
  4. D
    Select the right-hand (outside) turn lane, initiate an early sharp turn across the inside turn lane, and complete the maneuver into the far-left lane.

Answer

Select the right-hand (outside) turn lane, advance to the center of the intersection before turning, and remain in the outside lane throughout the turn.
When an intersection provides multiple left-turn lanes, commercial drivers must always choose the right-hand (outside) turning lane. This prevents other vehicles from traveling on the driver's blind right side. Additionally, pulling forward to the center of the intersection before initiating the turn provides the necessary space for the trailer's rear wheels to track cleanly without encroaching on inner lanes or curbs.

Step-by-Step Solution

1
Select the proper entry lane when dual turn lanes are present.
Position the combination vehicle in the right-hand (outside) left-turn lane.
Choosing the outside turn lane avoids having other vehicles pass or sit in the large blind spot along the right side of the trailer.
2
Determine the proper turning pivot point within the intersection.
Pull the cab straight forward until reaching the center of the intersection before rotating the steering wheel left.
Because the rear wheels off-track and follow a shorter path than the front wheels, waiting until the center of the intersection prevents the rear axles from clipping the inside turn lane or median.
3
Maintain lane discipline into the receiving roadway.
Complete the maneuver within the corresponding outside receiving lane.
Remaining in the designated outside path ensures safe separation from traffic turning simultaneously on the inside lane.

Key Concept

Proper lane selection in dual left-turn situations and intersection midpoint advancement to mitigate off-tracking.
Estimated Time:1m 30s
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Topics

Space for Turns

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