District Of Columbia CAR DMV Practice Test 11

To prevent hydroplaning, lower your speed in response to wet roads and keep your tires in good condition. If you detect a loss of control, take your foot off the gas, do not apply the brakes, maintain the direction of the vehicle, and allow the vehicle to slow to a manageable speed.

This sign means that it is not safe for drivers to enter the indicated road or driveway from their current direction. If you come across one of these signs, you should immediately turn around and drive a different way.

When driving in high-speed traffic, it is extremely important to stay well behind the vehicle in front of you. As your speed increases, the distance it will take for your vehicle to stop also increases.

Pentagonal signs mean you are approaching a school zone and/or school crossing. When you see these signs, be alert and prepare to stop.

At a stop sign, you must come to a full stop and check for traffic in all directions before proceeding.

After coming to a full stop, vehicles should proceed through a four-way stop in the order in which they arrive to the intersection. If multiple vehicles arrive at the same time, the vehicle on the left must yield the right-of-way to the vehicle on the right.

Your tires become less effective at clearing water from the road as you increase your speed. If you drive too fast, they may lose their grip entirely, leaving the vehicle sliding on a film of water. This is known as "hydroplaning."

Pavement can become very slippery within the first 10 to 15 minutes of a rainstorm because the rain causes oil in the asphalt to rise to the surface of the road. This problem becomes even worse in hot weather. The heat combined with the water causes more oil to rise to the road surface.

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.

Always signal your intentions when changing lanes, turning, or pulling away from a curb. Do not allow yourself to become lazy and form the bad habit of not following this law.

If your accelerator sticks while you are driving, keep your eyes on the road. Quickly shift the vehicle into neutral and apply steady pressure on the brake pedal. Pull off the road when it is safe to do so and turn off the engine.

When traffic control signals are not working, a driver must always treat the intersection as an all-way stop and come to a complete stop, unless otherwise directed by law enforcement. The driver must then look and yield the right-of-way before entering the intersection.

Worn or bald tires can increase your stopping distance and make turning more difficult. Tires without adequate tread also increase the risk of hydroplaning.

You cannot enter an intersection if traffic is backed up on the other side and you cannot get completely through the intersection. Wait until traffic ahead clears so you do not block the intersection.

When approaching a pedestrian who is using a white cane or guide dog while crossing the street, you must stop until the person is well away from your path of travel. Always yield the right-of-way to blind pedestrians.

A solid red arrow in a traffic signal means the same thing as a circular red traffic light. When an arrow is red, traffic in the indicated lane must stop and may not turn in the direction that the arrow is pointing.

When a steady yellow light appears on a traffic signal, you should prepare to stop. If you are already within the intersection, you should clear the intersection as quickly as possible.

Because a large vehicle, such as a truck or bus, has large blind spots to its sides and rear, avoid driving alongside such a vehicle and do not tailgate one.

This sign indicates that the road ahead will turn sharply to the right and then to the left.

If you are entering traffic from a driveway or private road, you should yield to drivers already on the public road. Merge safely into traffic when you are able to do so.

A solid yellow light means "caution" and signals that the light will soon turn red. You should stop at a solid yellow light if you can do so safely; otherwise, you should cautiously cross the intersection.

Driving can become unsafe if drivers believe they have nothing to improve. For your safety and the safety of others, always strive to improve your driving and observation skills.

Pennant-shaped yellow signs like this are used to indicate a no passing zone.

This sign warns of a dangerous downgrade or hill ahead. The hill may be very long or steep, or it may have sharp curves.

The distance required to stop your vehicle depends on perception time, reaction distance, and braking distance. This changes with speed and road conditions.