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.

After coming to a complete stop, you may turn left at a red light only if you are traveling on a one-way street and turning onto another one-way street. Only make the turn if there are no posted signs prohibiting such a turn.

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

White lines separate lanes of traffic moving in the same direction. You may cross a dashed white line to pass or change lanes if it is safe to do so.

This sign means drivers cannot make a left turn. It is unsafe and unlawful to make a left turn at an intersection where this sign is posted.

Yellow lines separate lanes of traffic moving in opposite directions. A broken yellow line next to your driving lane means that you may pass.

This sign indicates that U-turns are prohibited. You may see a sign like this at an intersection that commonly has oncoming traffic.

You must come to a complete stop at a steady or flashing red traffic light. You must always obey instructions given by officers directing traffic, regardless of any posted signs or traffic signals.

Double parking is prohibited by law.

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.

Bring your vehicle to a complete stop at a crosswalk to yield the right-of-way to any vehicle or pedestrian already in the intersection. You may carefully proceed if your lane is completely clear.

A broken yellow centerline means that a driver may cross the centerline to pass another vehicle on the left as long as there is no oncoming traffic. Drivers should never cross a solid yellow centerline in order to pass.

You may not know what is on the other side of a hill or just around a curve, even if you have driven the road many times. If a vehicle is stalled just out of sight on the roadway, you must be able to stop. Whenever you come to a hill or curve, adjust your speed so you can stop if necessary.

If a tire suddenly blows out while you are driving, hold the steering wheel tightly and keep the vehicle going straight.You should slow down gradually, taking your foot off the gas pedal and using the brakes lightly. Do not stop on the road if at all possible. Pull off the road in a safe place.

Because they are larger, trucks take longer to stop than cars traveling at the same speed. Other drivers should not pull in front of a truck and then slow down or stop.

Warning signs are usually yellow with black markings. They alert you to conditions that are immediately ahead. This sign warns drivers that another road crosses the highway ahead.

While airbags provide supplemental protection for adults in the event of a crash, they pose a severe safety risk for children. Anyone age 12 or under should sit in the back seat of a vehicle with airbags.

A traffic signal displaying a flashing yellow light indicates that you should be alert and proceed with caution. Slow down when approaching a flashing yellow traffic signal.

The speed at which you should drive your vehicle depends on road conditions, the weather, and the legal speed limit. You may never drive above the legal speed limit. Decrease your speed when anything makes conditions less than ideal.

It takes about three hours to cancel the intoxicating effects of three drinks.

A driver must yield the right-of-way to a pedestrian within a crosswalk. The driver should wait until the intersection is clear to proceed.

Signs with a red circle and diagonal line over a black symbol indicate the the action represented by the symbol is prohibited. In this case, the sign indicates that right turns are prohibited.

This is an example of a lane control sign. It indicates that you must move in the direction indicated by the arrow (in this case, to the left).

When passing a motorcycle, allow a full lane to the motorcycle. Never crowd into the same lane as the motorcycle. Returning to the original lane too soon can force a rider to swerve to the right and into traffic or off the road.

Legal prescription and over-the-counter drugs can impair your ability to drive, including drugs taken for colds, hay fever, allergies, or to calm nerves or muscles. It is illegal to drive while under the influence of any drug that impairs your ability to drive safely; this law does not differentiate between illegal, prescription, or over-the-counter drugs.

If your vehicle is hit from the rear while you are in forward motion, your body will be thrown backward. Press yourself against the back of your seat and put your head against the head restraint to prevent whiplash. Maintain a firm grip on the steering wheel and be ready to apply your brakes to avoid being pushed into another vehicle.

This sign indicates that you may not make a U-turn. You cannot turn around to go in the opposite direction at an intersection where this sign is posted.

You should always signal when turning, changing lanes, slowing down, or stopping so that other drivers, motorcyclists, bicyclists, and pedestrians will know your intentions.

Regulatory signs provide notice to road users of traffic laws that must be obeyed. This particular sign tells you the maximum speed limit for the stretch of highway where it is posted. You may drive more slowly than the posted speed limit, based on road conditions, but it is illegal to drive any faster than the posted speed limit.

Rather than stopping (as you would when entering other roads), you must use the merging or acceleration lane to speed up and smoothly merge with fast-moving traffic already on the interstate.