Final answer:
The maximum height limit for vehicles on highways in the United States is 13 1/2 feet, which ensures safe passage under overhead structures. The correct answer to the question is option (c) 13 1/2 feet.
Step-by-step explanation:
The question pertains to vehicle height regulations, which are a matter of law and transportation codes. In the United States, the maximum height limit for vehicles on roadways, unless otherwise posted, is typically 13 1/2 feet. This regulation is set to ensure that vehicles can safely pass under overpasses, bridges, and other overhead structures without causing damage or creating safety hazards.
It is important for truck drivers and those involved in transporting large loads to be aware of and comply with these regulations to avoid accidents and legal penalties.
Option (c) 13 1/2 feet is the correct answer. Vehicles, whether unloaded or with load, should not exceed this height to ensure they can navigate under most standard highway overpasses safely.