Tennessee CAR DMV Practice Test 20

When turning left at an intersection, yield the right-of-way to oncoming traffic and pedestrians. Once the intersection is clear and applicable signals allow, you may complete the turn.

When a school bus is flashing its red lights and has its stop arm extended, motorists must come to a full stop until the lights are turned off, the stop arm is withdrawn, and the bus begins moving again.

Being under the influence of alcohol affects your judgment. Good judgement is necessary to react appropriately to things that you see or hear while on the road. Even if you are below the legal blood alcohol limit, consuming any amount of alcohol is likely to affect your ability to drive safely.

A triangular yellow sign with black lettering indicates a no passing zone. It will appear on the left side of a two-way, two-lane roadway at the beginning of an area where prohibitive pavement markings are also used.

When changing lanes, glance over your shoulder to check for traffic in your blind spot. You may need to look several times before changing lanes. You must keep track of what traffic is doing in front of you as well as what traffic is doing in the lane next to you.

Drinking alcohol at a faster rate will lead to a higher level of intoxication. For example, drinking three drinks in one hour affect a person more acutely than drinking the same three drinks over the course of three hours. As a person's weight increases, the amount of alcohol required to raise their blood alcohol content (BAC) increases. When comparing two people of the same weight, the person with more body fat will show signs of intoxication first, since their body contains proportionally less water in which to dissolve the alcohol.

At a yield sign, you must slow down or stop, if necessary, and give the right-of-way to crossing or merging vehicles. Yield the right-of-way to any cross traffic that is close enough to cause conflict.

When backing up, place your right arm on the back of the passenger seat and look directly through the rear window. Do not depend on your rearview or side mirrors as mirrors do not show directly behind your vehicle. Only drive in reverse at a low speed.

Blind or partially blind pedestrians may carry a white cane or use the assistance of a guide dog. You must always yield the right-of-way to a pedestrian who is using a guide dog or carrying a white cane.

The only way to sober up after drinking alcohol is to allow time for your body to eliminate the alcohol in your system. Nothing you can do, including eating and drinking, can accelerate this process.

Rubbernecking (the practice of slowing down to look at collisions or other out-of-the-ordinary things) contributes to traffic congestion and should be avoided.

You must approach all railroad crossings with extreme caution and cross only when you know that no train is coming from either direction. Be aware of vehicles that must stop at all railroad crossings, such as school buses and trucks carrying hazardous materials.

This sign indicates that a divided highway begins ahead. Keep to the right of the median divider.

Unless otherwise posted, the speed limit on primary and secondary state and federal highways in Tennessee is 55 miles per hour.

Children are often the least predictable pedestrians and the most difficult pedestrians to see. Take extra care to look out for children, especially near schools, bus stops, playgrounds, parks, and ice cream trucks. Be aware of children riding bikes on the sidewalk, as they may come onto the road unexpectedly.

Use low beam headlights when driving in rain, snow, sleet, or fog. High beam headlights in adverse weather conditions lower visibility by reflecting off the precipitation and back into the driver's eyes.

When parking downhill, turn your front wheels toward the curb or edge of the road. When parking uphill on a road without a curb, turn your wheels toward the edge of the road. When parking uphill on a road with a curb, you must turn your front wheels away from the curb.

This sign warns that two lanes of traffic going the same direction will soon merge into one lane.

When being tailgated, create extra space in front of your vehicle and do not brake suddenly. Slow down gradually or merge into another lane to prevent a collision with the tailgater.

A three-sided yield sign indicates that you must slow down and be ready to stop, if necessary, to let any vehicle, bicyclist, or pedestrian pass before you proceed. In this case, you do not have the right-of-way.

It is illegal in Tennessee for any driver to make a U-turn on an interstate highway. Emergency crossovers on interstates are for the use of emergency vehicles and highway maintenance crews only.

Drivers turning left must yield to oncoming vehicles that are driving straight ahead. A turning driver may only proceed when they can safely turn without affecting oncoming traffic.

A warning sign is usually yellow with black markings. This sign warns that the number of lanes ahead is reduced and that traffic will need to merge to the left.

Drivers must respect and cooperate with all other road users and conform to specific rules in order to maintain order and to avoid crashes. When encountering an aggressive driver, it is safest to just get out of their way. Always avoid competing with other drivers.

You should never try to make a turn from the wrong lane. If you aren’t in the proper lane, drive to the next intersection and make the turn from the proper lane there. Circle back if necessary.

This sign indicates that the road ahead may be slippery when wet.

At an intersection controlled by a steady yellow light, you should bring your vehicle to a safe stop. If you are already within the intersection when the light changes from green to yellow, continue through the intersection at a safe speed.

Use your low beams when driving in fog, snow, rain, or mist. Light from high beams will reflect off of precipitation, causing a glare and making it even more difficult to see. Some vehicles are equipped with fog lights that should be used in addition to low beam headlights.

This sign prohibits right turns. You cannot make a right turn at an intersection where this sign is posted.

In foggy or misty conditions, you should not use your headlights on their high beam setting because the light will be reflected back into your eyes.