What does it mean to "dim" or "dip" your headlights?
It means switching your headlights from the high beam setting to the low beam setting.
When approaching an oncoming vehicle at night, you must dim your high beams within what distance?
You must switch to your low beams when you are within \(500\) feet (about \(150\) meters) of an oncoming vehicle.
When following another vehicle at night, you must dim your high beams within what distance?
You must switch to your low beams when you are within \(200\) to \(300\) feet (about \(60\) to \(90\) meters) of the vehicle ahead of you.
Why is it mandatory to dim your high beams when following another car?
The bright light from your high beams can reflect into the leading driver's rearview and side-view mirrors, causing severe glare and dangerously impairing their vision.
An oncoming driver flashes their lights at you. What is the most likely reason?
They are signaling that your high beams are on and blinding them. You should check your lights and switch to low beams immediately.
If an oncoming driver has their high beams on, what is the safest way to react?
Avoid looking directly into their lights. Instead, look toward the right edge of your lane, using the white line painted on the road as a guide until the vehicle passes.
Why are high beams ineffective and dangerous in fog, heavy rain, or snow?
The bright light reflects off the precipitation (water droplets, snowflakes) directly back into your eyes, creating a wall of glare that severely reduces visibility, often worse than with low beams.
After an oncoming car passes you, when is it safe to switch back to your high beams?
You can turn your high beams back on as soon as the other vehicle's taillights have passed you.
After you pass another vehicle, when is it safe to switch back to your high beams?
Wait until you can see the entire front of the car you just passed in your rearview mirror before turning your high beams back on. This ensures you won't shine the bright light into their vehicle.
Can you be fined for not dimming your high beams?
Yes. Failing to dim your high beams for other drivers is a traffic violation in most places and can result in a ticket and fine.
Besides other cars, for whom else should you dim your high beams?
You should always dim your high beams for pedestrians and cyclists. The bright light can be just as blinding and disorienting to them as it is to drivers.
What does the term "overdriving your headlights" mean?
Driving at a speed that does not allow you to stop within the distance illuminated by your headlights. By the time a hazard becomes visible, it is too late to stop safely.
On a divided highway with a wide median, are you still required to dim your high beams for oncoming traffic?
If the median is wide enough that your lights do not affect oncoming drivers, it may not be legally required. However, as a matter of courtesy and safety, it's often best to dim them anyway.
Should you ever flash your high beams at a driver who has wronged you in anger?
No. Using your lights to express anger can escalate a situation, be misinterpreted, and is a form of aggressive driving. Use lights only for safe communication.
