If driving at night feels more stressful than it used to, you are not imagining it.
Headlight glare has become one of the most common complaints among motorists, and safety groups say it is a real and growing issue. The main culprit is whiter, harsher LED lighting, which risks blinding oncoming drivers. This glare can reduce contrast, slow reaction times and make it harder to spot pedestrians, cyclists or road hazards — especially for older drivers.
Those who drive vehicles with LED headlights can take steps to reduce the danger for oncoming motorists. Drivers can also take steps to protect themselves when they encounter oncoming cars with these lights.
The dangers of LED lights
The biggest change is the shift from traditional halogen bulbs to LED headlights. While older halogen bulbs typically produced about 500 to 1,000 lumens, many factory-installed LED headlights now produce 3,000 to 4,000 lumens. Some aftermarket bulbs can exceed 10,000 lumens.
LEDs also emit a whiter, bluer light. That color temperature can feel harsher on the eyes than the warmer yellow glow of halogen lights, especially at night when pupils are more dilated.
According to AAA, the color of headlights is largely a design choice, not a safety requirement. Researchers are studying whether less blue lighting could reduce discomfort without sacrificing visibility.
Vehicle height also plays a role. Trucks and SUVs dominate U.S. sales, and their higher-mounted headlights often shine directly into the eyes of those driving sedans or smaller vehicles.
Regulations have not kept up
Federal headlight standards were written long before modern LED systems existed.
While limits technically exist, experts say loopholes allow manufacturers to increase overall brightness as long as certain test zones are met. Aftermarket LED bulbs are an even bigger concern, since many are not approved for on-road use but are widely sold online.
Some states, including Maine, report frequent inspection failures due to unapproved or excessively bright replacement headlights.
What drivers with LED headlights should do
- Have them properly aligned. Misaligned headlights are a major cause of glare.
- Avoid aftermarket bulbs unless they are approved by the Department of Transportation for your vehicle.
- Don’t assume brighter is better. Excessive brightness can reduce safety for everyone on the road.
- Use high-beam assist features correctly and avoid using high beams manually in traffic.
What to do when facing blinding headlights
- Do not stare into oncoming headlights. Focus your eyes toward the right edge of the road or the lane line.
- Keep your windshield clean. Dirt and film can dramatically amplify glare.
- Use your rearview mirror’s night setting to reduce glare from vehicles behind you.
- Slow down slightly if visibility feels compromised and increase your following distance.