Alberta Class 4 Practice Questions - Alberta Class 4 Commercial Driver's Licence Knowledge Test Exam

What is the primary function of the amber clearance lights located on the top front of a commercial bus?

To illuminate the road ahead like fog lights To indicate the height and width of the vehicle to oncoming traffic To signal to passengers that the bus is full To replace the high beam headlights in dark areas

Correct Answer:

To indicate the height and width of the vehicle to oncoming traffic

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