Home › CDL Practice Tests › General Knowledge Questions › Question 91
When must you dim your high beams for an oncoming vehicle?
- A.Within 500 feet of the vehicle
- B.Within 100 feet
- C.Only when the other driver flashes first
- D.Never, trucks are exempt
Correct answer
A. Within 500 feet of the vehicle
Why
High beams must be dimmed within 500 feet of oncoming traffic, and also when following another vehicle closely. Glare can blind the other driver for several seconds at exactly the wrong moment.
Manual topic: Safe Driving - Night Driving · From the General Knowledge practice bank (GK-091).