You are driving at night on a dimly lit city street with your high beam headlights on. You must dim your lights when you are within 500 feet of:

You are driving at night on a dimly lit city street with your high beam headlights on. You must dim your lights when you are within 500 feet of:

• A. An oncoming vehicle.
• B. A vehicle ahead you are following.
• C. A bicyclist.
• D. A parked car.

Answer: (A)

High beams help you see, but they also create glare that can blind other drivers. The essential safety rule here is to switch to low beams when you are within about 500 feet of an oncoming vehicle. Dimming prevents the other driver from being dazzled, helping them to see the road, pedestrians, and hazards ahead and react in time. While you should also dim when following a vehicle to avoid glare, this scenario points to the risk posed by an approaching car, which is why this option is the best choice. A bicyclist or a parked car doesn’t present the same immediate glare risk in this moment, so the focus remains on avoiding blinding the oncoming driver.

High beams help you see, but they also create glare that can blind other drivers. The essential safety rule here is to switch to low beams when you are within about 500 feet of an oncoming vehicle. Dimming prevents the other driver from being dazzled, helping them to see the road, pedestrians, and hazards ahead and react in time. While you should also dim when following a vehicle to avoid glare, this scenario points to the risk posed by an approaching car, which is why this option is the best choice. A bicyclist or a parked car doesn’t present the same immediate glare risk in this moment, so the focus remains on avoiding blinding the oncoming driver.