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Zorluk: OrtaSpace Overhead

On roadways passing beneath arched bridges or curved masonry underpasses, a commercial motor vehicle whose total height is below the posted clearance limit can still strike the structure when traveling near the shoulder or outer edge of the travel lane.

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True
The statement is true because overhead clearance warning signs on arched bridges and curved overpasses typically designate the maximum clearance available at the center of the arch. Because the structure curves downward toward the sides of the road, the clearance near the curb or shoulder can be several feet lower than the posted center height. A commercial vehicle driving near the edge of the lane can strike the bridge even if its height is within the posted limit.

Adım Adım Çözüm

1
Analyze the structural geometry of arched overpasses and curved underpasses.
Arched structures provide peak vertical clearance only at the center of the arch, with clearance progressively decreasing toward the pavement edges.
Vertical clearance across arched bridges is non-uniform across the travel lanes.
2
Evaluate how posted bridge clearance signs correspond to arched structures.
Posted clearance signs typically reflect the maximum center clearance rather than the reduced clearance available at lane edges or shoulders.
A driver positioned toward the right curb has less vertical space than the posted sign indicates.
3
Determine the truth value of the statement based on CDL space management principles.
A vehicle measuring below the posted height limit can collide with the low curved shoulder section of the bridge.
The statement accurately reflects CDL overhead clearance hazards on arched structures.

Anahtar Kavram

Non-Uniform Clearance on Arched Overhead Structures
Tahmini Süre:45s
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