You don't want to use high beams in foggy weather or snow. It actually makes it more difficult for you to see as the light reflects off the snow or fog.
Highbeam headlights should not be used within city limits when there is oncoming traffic or when driving behind another vehicle, as the bright lights can blind other drivers and create a safety hazard.
Full beam lights in foggy conditions will reflect the light directly back at the driver. Dipped headlights should be used instead.
The middle two lights should be on when you turn on the headlights.
ummm... your brake lights should ALWAYS work whether your headlights are on or not, that's how people behind you know you are stopping.
Low beam headlights and fog lights if the vehicle has fog lights.
When there is snow, it is recommended to turn on your headlights so that you are more visible to other vehicles in the reduced visibility conditions. It is also a good idea to turn on your fog lights if your vehicle is equipped with them, as they can help improve visibility in snowy conditions.
Brake lights should NOT be effected by the headlights. Brake light function is completely independent of the headlights. Assuming you are not refering to the tail lights, or marker lights, which are supposed to come when the head lights are turned on. Not having brake lights when the head lights are on is a big safety problem and should be corrected.
No, you should not drive with only your parking lights on. They are meant for stationary vehicles to increase visibility, not for driving in low light conditions. It is important to use your headlights when driving in the dark for proper visibility and safety.
In fog you should use dipped headlights or front fog lights. Also you should use high intensity rear ( fog) lights.
When the headlights are on.
Your low beam lights should be on when driving after sunset (twilight) and when it is raining. Some states require headlights or daytime running lights to be on in various conditions or at various times.You should not use your high-beam lights when you are closely behind another vehicle, or when approaching another vehicle head-on on a two-way road.
Usually no, Much of the high beam will be reflected back at you by the tiny droplets of fog possibly making it harder for you to see.