Horn headlights and emergency signals — Massachusetts Permit Test

You must use headlights and taillights from one-half hour after sunset until one-half hour before sunrise.

The half hour either side is the part drivers forget. Dusk is when the eye is worst and the lights are still off.

You must use your headlights and taillights: • From one-half hour after sunset until one-half hour before sunrise

You must use headlights whenever you use your windshield wipers, and daytime running lights are not sufficient.

Running lights leave the rear of the car dark. In rain that is the end another driver runs into.

You must use your headlights and taillights: • From one-half hour after sunset until one-half hour before sunrise • When you cannot clearly see people or vehicles 500 feet ahead due to insufficient light or weather conditions • Whenever you use your windshield wipers (daytime running lights are not sufficient)

You must use headlights when you cannot clearly see people or vehicles 500 feet ahead because of poor light or weather.

Five hundred feet is about the length of one and a half football fields. Below that, the lights are what make you visible.

You must use your headlights and taillights: • From one-half hour after sunset until one-half hour before sunrise • When you cannot clearly see people or vehicles 500 feet ahead due to insufficient light or weather conditions

You must use headlights while driving through a tunnel.

A tunnel is night in the middle of the day, and the eyes of the driver behind take a moment to adjust to it.

You must use your headlights and taillights: • From one-half hour after sunset until one-half hour before sunrise • When you cannot clearly see people or vehicles 500 feet ahead due to insufficient light or weather conditions • Whenever you use your windshield wipers (daytime running lights are not sufficient) • In rain, snow, fog, or other weather that makes it hard to see • Anytime you have trouble seeing other vehicles • To alert another driver to turn on their headlights • While driving through a tunnel

Use your horn to warn pedestrians or other drivers of possible trouble and to avoid crashes, not to show anger.

A horn used to complain is noise. A horn used as a warning is the only thing that reaches someone who has not seen you.

Warn pedestrians or other drivers of possible trouble

Never change a flat tire in a traffic lane, and wait for help to arrive.

A person crouched at a wheel is invisible until the last moment. Moving the car all the way off the road comes first.

Never change a flat tire in a traffic lane. Wait for help to arrive.

When must headlights and taillights be used?

From one-half hour after sunset until one-half hour before sunrise. The half hour either side is the part drivers forget. Dusk is when the eye is worst and the lights are still off. Massachusetts Driver's Manual, p.45: “You must use your headlights and taillights: • From one-half hour after sunset until one-half hour before sunrise”