Fog hills and carbon monoxide — Alabama Permit Test

In fog or a snowstorm, keep headlights on low beam to reduce glare off the fog; if you cannot see, pull completely off the road, leave your lights on and park until visibility improves.

High beams bounce off fog straight back into your eyes.

Keep headlights on low beam to reduce the glaring reflection of your lights on the thick fog blanket or blinding snow.

If it is impossible to see in fog or snow, pull completely off the road, leave your lights on, and park until visibility improves.

Lights left on let other drivers see your parked car.

If it is impossible to see or you become weary of straining your eyes to see with such poor visibility, pull completely off the road, leave lights on and park.

On narrow, hilly roads, do not hesitate to use your horn as you round hazardous curves, to let other drivers know they are not alone.

On a blind curve, a horn is how a driver coming the other way learns you are there.

Don’t hesitate to use your horn, as you round hazardous curves to let the other drivers know they aren’t alone on the narrow road.

The law forbids you to coast downhill with the transmission in neutral.

In neutral the engine cannot help slow the car, and the brakes can overheat and fail.

The law also forbids you to coast downhill with the transmission in neutral.

Carbon monoxide fumes are odorless and deadly; symptoms of poisoning are sudden weariness, yawning, dizziness and nausea, and the only cure is fresh air.

You cannot smell carbon monoxide, so the signs in your body are the only warning.

Symptoms of carbon monoxide poisoning are sudden weariness, yawning, dizziness and nausea.

To avoid carbon monoxide poisoning, have the exhaust system checked regularly, do not idle or drive with all windows closed tightly, and never warm up the motor in a closed garage.

Fumes build up fast in a closed space and can kill before you notice them.

Do not warm up the motor while the vehicle is in a closed garage.

Which headlights should you use in thick fog?

Low beams. High beams bounce off fog straight back into your eyes. Alabama Driver Manual, p.73: “Keep headlights on low beam to reduce the glaring reflection of your lights on the thick fog blanket or blinding snow.”