speed is not the determinig factor. You can use your high beems to improve your vision of the road anytime it is safe to do so. The times it would not be safe is when your high beems blind an oncomin driver or when you are to someone from behind. As you drive more you will learn when the lights are likely to bother someone else because someone is going to bother you. Also, never use your high beems in fog. It may give you a sense that you are able to see better but what really happens is that the fog reflects the light bach at you.
Use your high-beam headlights at night whenever it is legal and safe.
Use your high-beam headlights at night whenever it is legal and safe.
No, you should not use high-beam headlights at all in heavy fog.
low beam
Dim headlights form high beam to low beam
High beam headlights reveal objects at a distance of at least 450 feet away. High beam headlights allow the driver to view obstacles in the road much sooner than low beam headlights.
Perhaps he is in a large vehicle and his lights are already on low. All you can do is decrease speed and try to stay on the road. More flashing and he may show you his high beams!
At night yes, but in the day no because the sunlight overpowers the headlights and high beam lights.
Look to the side of the road at the white line
Look to the side of the road at the white line
Car headlights have to be able to "dip" so as not to dazzle oncoming traffic, they therefore can switch between a "high" beam and a "dipped" beam and thus have a dual beam.
I was looking at the 1996 Mercury Grand Marquis Owner Guide and it shows that you can change each of the ( 4 light bulbs for the 2 low beam and the 2 high beam headlights ) ( the low beam headlights take bulb # 9006 ) ( the high beam headlights take bulb # 9005 )