Why night driving is harder
In daylight, you see far, with good color and depth perception. After dark, your view shrinks to what your headlights and street lights reveal. Your eyes also take time to adjust to low light, and bright lights from oncoming vehicles can briefly reduce what you see. Fatigue tends to rise in the evening too. Together, these things make it easier to miss pedestrians, cyclists, animals and road features until you are close.
Many people notice that their night vision declines with age or with some eye conditions, and glare may become more bothersome. If you have trouble seeing at night, consider having your eyes checked by a qualified eye care professional.
Use your headlights properly
Lighting rules vary by country and region, including when lights must be on and how they must be aimed, so check your local requirements. The following are general principles.
Low beams
Low beams (also called dipped or passing beams) are your standard setting at night. They illuminate the road ahead without dazzling other drivers. Use them in towns, in traffic and whenever you are near other vehicles. Many drivers also use them at dusk, dawn and in rain or fog, because lights help others see you as well as helping you see.
High beams
High beams (full beams) light up a longer stretch and can reveal hazards earlier on dark rural roads. Use them when there is no oncoming traffic and no vehicle directly ahead. Switch back to low beam:
- When an oncoming vehicle approaches, doing so well before it reaches you.
- When you come up behind another vehicle, since high beams in the mirror dazzle the driver.
- In fog, rain or snow, where high beams reflect off water droplets or flakes and can reduce your visibility. See fog driving for more.
Some cars have automatic high-beam assist. It can be convenient, but it can be slow to respond or be fooled by reflective signs, so stay ready to override it.
Fog lights and other lights
If your car has separate fog lights, use them only when visibility is reduced, and turn them off when it improves, since they can dazzle others. Daytime running lights are not a substitute for headlights at night, because in some cars they do not turn on the tail lights. Check that your tail lights are actually on, particularly if your dashboard is bright and can mislead you.
Drive within your headlight range
A key idea is to avoid “overdriving” your lights, which means traveling so fast that you cannot stop within the distance you can see. Low beams typically reveal a limited stretch of road, and at higher speeds your stopping distance can exceed it. The practical conclusion is to reduce speed on unlit roads, around bends and in unfamiliar areas, and to allow more following distance than you would in daylight. A larger gap is also valuable because you may not see the road ahead of the car in front. This is part of keeping a safe following distance.
Deal with glare
Oncoming headlights, bright vehicles behind you and reflective signs can all cause glare. Some ways to cope:
- Look slightly to the right (in countries that drive on the right), toward the edge line or road edge, instead of directly at oncoming lights. Mirror the idea for left-hand-traffic countries.
- Use the dimming function on the interior mirror, or flip the tab on a manual mirror. Side mirrors can be angled slightly, as part of mirror adjustment, to reduce glare from behind.
- Slow down if you are briefly dazzled. Do not brake sharply, but ease off and keep your lane position.
- Keep your windshield clean, inside and out. Dirt and film scatter light and make glare worse.
Lenses with tints marketed for night driving are not generally recommended, since they reduce the light reaching your eyes. If glasses bother you at night, ask an eye care professional about options.
Keep lights and glass in good shape
Your headlights only help if they work properly.
- Check all lights regularly: low and high beams, indicators, brake lights, tail lights and reverse lights. Ask a helper to watch while you test them, or look at reflections in a wall or window.
- Replace failed bulbs promptly, and consider replacing in pairs, since the other often ages similarly. Some cars make bulb changes simple; others need a workshop, so ask a mechanic if you are unsure.
- Clean the lenses. Dirty or cloudy plastic reduces output. Gentle washing helps, and if lenses are heavily yellowed or hazy, a professional can advise on restoration or replacement.
- Check the aim. Misaimed headlights can either dazzle oncoming drivers or fail to light the road. Aim may change after suspension work or when you carry a heavy load. A garage can check it, and some regular inspections include it.
- Clean windows inside and out, and clear fogging, as discussed under defrosting windows.
- Dim the dashboard to a level that does not strain your eyes or reflect in the glass.
Stay alert and prepared
- Rest before long trips. Drowsiness is a real risk at night. If you notice yawning, heavy eyelids or drifting, stop in a safe place and take a break. Opening a window or turning up the radio typically provides only a short-lived effect.
- Avoid distraction. Looking at bright screens harms your night vision. Set your GPS navigation before departure and reduce screen brightness. For more, see distracted driving.
- Watch for wildlife, particularly in rural areas and at dusk. Animals’ eyes may reflect your lights, and they may be in groups. Slow down if you see one.
- Be careful around pedestrians and cyclists. Dark clothing makes them hard to spot. Slow down in places where they are likely.
- Make yourself visible when parked or stopped. If you have a problem, pull as far from traffic as you can and use hazard lights. Our article on highway breakdown covers this in more detail.
- Carry a flashlight and basic items in an emergency kit.
A realistic mindset
You do not have to avoid night driving, but you should accept that your margins are smaller. Lower your speed, widen your gaps, keep the car clean and well-maintained, and take breaks. If conditions seem beyond your comfort, postponing a trip or choosing a better-lit route can be a sensible decision.