Using headlights (or fog lights) helps increase the driver's visibility too.

Motorcyclists must wear crash helmets and use headlights at all times.

He'd have to use headlights, and there would be a risk.

He could not use headlights or horn for fear of betraying his presence to the car in front.

You must use headlights at all times, and note that there can be as little as six hours of daylight during the winter months.

Norwegian law requires that drivers always use headlights when driving.

The sun is so heavily obscured by the smoke that motorists must use headlights at noon.

Other bus drivers said that they were using headlights that night and in that location as it was particularly dark.

He was not using headlights, and the sidelights gave hardly any glow at all.

I used headlights for most of the fourteen miles.