Alaska: DMV Practice test - Practice Test 21

Warning signs prepare drivers for upcoming road conditions and hazards and are usually yellow with black markings. This sign tells drivers that they may encounter traffic coming from the opposite direction.

A flashing red light means that you must stop, yield to traffic and pedestrians, and go only when it is safe. At a railroad crossing, a flashing red light indicates that a train is approaching. Yield to the train, and go only when the lights have stopped flashing and all other active warning devices deactivate.

When driving conditions are less than ideal, a driver must decrease their driving speed. Conditions may become less than ideal due to the road surface, weather, time of day, road width, or traffic.

A hand or mechanical turn signal must be displayed for a minimum of 100 feet before a vehicle turns or changes lanes. The signal should be displayed for a longer distance when the vehicle is traveling at a high speed.

Driving more slowly than the flow of traffic can be hazardous. If you are on a two-lane, two-way road and driving so slowly that traffic is backing up behind you, you are required to pull off the road and let the other vehicles pass. Only drive significantly under the speed limit when conditions require it.

The glare of headlights from oncoming vehicles can cause the pupil of the eye to contract, restricting visibility. To protect other drivers when driving at night, change your headlights to their low beam setting within 500 feet of an oncoming vehicle.

When intending to back up, always check behind your vehicle before getting in. Children and small objects are difficult to see from the driver's seat. While backing, turn your head so you can see through the rear window. Do not depend only on your mirrors or sensors.