Driving in Sun Glare
When the sun sits low on the horizon, at sunrise and sunset, it can blind drivers for seconds at a time. Glare hides traffic signals, brake lights, pedestrians and stopped vehicles. It is a hidden factor in many crashes, especially in the morning and evening commute.
- All Drivers
- Commuters
- Commercial Drivers
Why it is dangerous
- Bright light makes your pupils narrow, so objects in shadow seem dark or disappear.
- Glare reflected off wet roads, snow, hoods and other cars adds to it.
- A dirty windshield scatters light and makes glare much worse.
- Driving east in the morning or west in the evening points you at the sun, and turns and hills can suddenly put you in its path.
Before you drive
- Keep sunglasses in the car, with polarized, UV-blocking lenses that fit well
- Clean the inside and outside of the windshield regularly; film and dust on the inside glass cause streaks. Replace worn wipers
- Keep the dashboard clear of papers and shiny items that reflect the sun
- Adjust your seat and mirrors so you can use the sun visor well; a visor extender may help
- Plan your route or schedule to avoid driving into the sun when you can
- Get your eyes checked regularly, and treat cataracts or other problems that increase glare sensitivity
When glare hits
- Slow down and increase following distance to 4 seconds or more, since you may not see brake lights.
- Use the visor and sunglasses. Tilt your head or lower the visor to block the sun while still seeing the road and signals.
- Look at the edge of the road or lane lines to help keep your position, and avoid staring at the sun.
- Be extra careful at intersections: traffic lights can be hard to see. Be ready for sudden stops and watch for pedestrians and cyclists in shadow. See Pedestrians & Cyclists.
- Turn on headlights so others can see you.
- If you can't see, slow gradually and pull over safely when you can. Do not stop in a traffic lane.
- Do not close your eyes or take your eyes off the road to find your sunglasses.
- Do not tailgate while blinded.
See also Night Driving and Defensive Driving.
Standards & references
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