Drivers should use low beam headlights when driving in fog. High beams will reflect back at the driver, making it difficult to see.

Only use your horn when it is necessary to avoid collisions. Do not use your horn if a driver or bicyclist is moving slowly and you want him or her to drive faster or get out of your way.

Yellow lines separate traffic moving in opposite directions. Dashed lines on the pavement indicate that passing is permitted when safe.

Before changing lanes, it is very important to check behind you. You should look over your shoulder to ensure that you are not getting in the way of vehicles in the lane you want to enter. Before changing lanes, you should also ensure that no drivers are attempting to drive into the same spot from a different lane.

Children on bicycles are sometimes unpredictable. Young bicyclists are especially likely to make surprising changes in direction. Remember that children and bicycles are both small in stature and may become difficult to see.

If you are the first person to arrive at the scene of a crash, you should immediately call 911. Otherwise, if you are not professionally trained to render aid, cautiously continue on. This will ensure that you do not interfere with the arrival of emergency services and will prevent you from being the victim of a secondary collision caused by other drivers distracted by the crash scene.

When a protected turn arrow changes from green to yellow, drivers must prepare to yield to oncoming traffic. A yellow arrow indicates that the protected left turn is ending.

In rainy weather, you should lower your speed to reduce the risk of hydroplaning. Driving too fast may cause your tires to ride up on the water and lose contact with the surface of the road, making it very difficult to control your vehicle.

This sign indicates that there is an intersection with a side road ahead.

If a vehicle merges in front of you too closely, take your foot off of the accelerator. This will create space between you and the vehicle ahead without requiring you to slam on your brakes or swerve into another lane.

When making any turn, turn from the lane closest to the direction you wish to travel into the first available legal lane. If you are making a left turn from a one-way street, this means that you would make the turn from the lane nearest to the left curb.

It is not always easy to maintain a safe distance behind your vehicle. However, you can help keep the driver behind you a safe distance away from your vehicle by maintaining a steady speed and signaling turns, lane changes, and deceleration in advance.

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.

Warning signs are usually yellow with black markings. This sign alerts drivers to where pedestrians may be crossing. If a pedestrian is crossing in a crosswalk marked with this sign, drivers must stop and remain stopped until the pedestrian is no longer in the crosswalk.

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

Passing areas are based on how far ahead drivers can see. Allow the passing vehicle to re-enter the drive lane as easily as possible to help everyone avoid potential upcoming hazards.

When parking on a hill, you should always leave your vehicle in gear or in the "park" position. If there is no curb, you should turn your front wheels so that the vehicle will roll away from the center of the road if the brakes fail. If there is a curb, the front wheels should be turned toward it (if headed downhill) or away from and gently touching it (if headed uphill).

Warning signs are usually yellow with black markings. This sign warns drivers about an upcoming steep hill. Drivers should slow down and be ready to control their speed and protect their brakes from damage.

A flashing yellow light means that you should slow down, check for cross traffic, and proceed with caution.

Night driving creates a unique set of problems for drivers. Due to the reduced visibility, it can be difficult to judge distance and the traveling speeds of other vehicles when driving at night. Drivers can see only as far as their headlights allow.

Warning signs provide notice to road users of a situation that might not be readily apparent and are usually yellow with black markings. This sign warns drivers to be careful when driving under wet conditions as the pavement will become slippery and more difficult to navigate safely.

An octagonal (eight-sided) sign always means "stop." You must always come to a complete stop at this sign.

A flashing yellow traffic light means drivers must slow down, be more aware, and proceed with caution. Be alert to crossing traffic and pedestrians.

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.

Always be aware of pedestrians near your vehicle. You must do everything you can to prevent striking a pedestrian, regardless of the circumstances.

Only the passage of time can remove alcohol and its impairing effects from the body.

You may never drive off the paved or main-traveled portion of the road and onto the shoulder to pass another vehicle.

Driving during the first half hour of rainfall is dangerous because roadways become extremely slippery when the water mixes with oil and other chemicals on the road surfaces that have not yet washed away. Use extra caution when driving on slippery roads.

This sign indicates that there is a crossroad ahead.

You should always signal when moving your vehicle to the right or left. On an interstate, you should stay in the right lane if you are moving more slowly than the surrounding traffic. It is illegal to back up or make a U-turn on interstate highways, so if you miss your exit, you should proceed to the next exit.