Use your high-beam headlights at night whenever it is legal and safe.
Night time.
Use your high-beam headlights at night whenever it is legal and safe.
It is safe to use the bright [highbeam] headlights when there is no oncoming traffic/drivers who could be blinded by the bright light. Also, it is unsafe to use highbeams when there is fog or smoke which would reflect the light back to you, thus reducing the distance which you can see.
At night time or 30 min after sunset In Illinois they are also required when wipers are in use.
leave parking lights on or lower beam headlights on
See the related link below.
All the time
Headlights and wipers.
use your low bean headlights
Headlights should not be left on while the vehicle is not in use. If you are not driving, you will just drain your battery while having your headlights on.
No, you should not use high-beam headlights at all in heavy fog.
Headlights should be on at least 30 minutes after sunset and can be off 30 minutes before sunrise. They should also be on during times of limited visibility, such as in rain or when it is snowing.