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

It is illegal to pass a stopped school bus that has its red warning lights on, even in a school yard. However, if you are passing a school bus stopped on the opposite side of a divided highway, you may continue driving.

A motorcycle is a full-size vehicle with the same privileges as any other vehicle on the roadway. You should allow a motorcyclist a full lane width. Although it may seem as though there is enough room in the traffic lane for a larger vehicle and a motorcycle, remember that the motorcycle needs room to maneuver safely.

If you look into the headlights of an oncoming vehicle, the pupil of your eye will contract. After the oncoming vehicle has passed, there will be an interval of time during which the pupil must readjust to the less intense light. During this recovery period, you are virtually driving blind.

The ability to drive safely is dependent on the driver being in good physical condition. Driving can be impaired by alcohol, legal and illegal drugs, and being drowsy.

Every time you have to stop quickly, it takes time and fuel to accelerate and get your vehicle back up to the speed of traffic. Drivers who look far ahead of their vehicles can slow down gradually or change lanes to avoid unnecessary braking, leading to better gas mileage.

Warning signs are usually diamond-shaped and yellow with black lettering or symbols. They warn drivers about special situations or potential hazards ahead.

In many collisions with motorcycles, bicycles, and pedestrians, drivers reported that they were looking but still did not see the smaller vehicle or pedestrian. These can be more difficult to spot in traffic than passenger vehicles because they are smaller, may move faster, and have less noticeable lighting. To prevent collisions with these smaller and less protected road users, drivers should always be alert to the presence of motorcycles, bikes, and pedestrians.

Never make last-minute turns. If you reach an intersection where you wish to turn but you are not in the proper lane to make the turn, drive to the next intersection and then make the turn from the proper lane.

If you are being followed by an emergency vehicle that is not using its siren or flashing lights, you do not need to clear a path. Continue driving in a normal manner.

Regulatory signs are white, rectangular signs with black markings. Drivers must obey the instructions posted on all regulatory signs. Where this sign is posted, it is prohibited for drivers to pass one another.

At dusk or on overcast days, you must turn on your headlights. Dim your lights to their low beam setting when within 1,000 feet of an approaching vehicle and when within 500 feet of a vehicle that you are following. When driving in poor weather, always use your low beams.

Pedestrians should walk on the side of the road facing the traffic in the lane nearest them.

This sign indicates that a T intersection is ahead.

White lines separate lanes of traffic that are moving in the same direction. Dashed white lines may be crossed to pass or change lanes, if it is safe to do so.

The exhaust system carries exhaust gas out of the vehicle and prevents fumes from entering into the passenger compartment. To prevent carbon monoxide poisoning, keep your exhaust system free of leaks. Replace all defective parts immediately.

You drive defensively when you identify dangerous driving situations and take action before an accident occurs. Defensive driving helps prevent conflicts with aggressive, offensive, discourteous, careless, inattentive, impulsive, ignorant, or intoxicated drivers or pedestrians.

High beam headlights should be used when you are driving through open country where few other vehicles are present. Dim your lights when closely following another vehicle, when meeting an oncoming vehicle, and when driving in fog.

When on a roadway with two or more lanes, you should make room for entering vehicles. If there is no one driving next to you, move over one lane.

Traffic signals are placed at intersections to keep traffic moving and to help prevent crashes. Drivers, pedestrians, and cyclists must obey these signals, except in instances when an officer is directing traffic.