If you approach a stopped school bus that has its lights flashing and arm extended, you must come to a full stop and remain stopped until the signal arm is pulled back and the bus resumes motion. This law applies whether you are traveling in the same direction as the bus or if you are approaching from the opposite side of the street.

A broken yellow centerline next to your side of the road indicates that traffic may cross the centerline to pass from your side of the road.

If your vehicle begins to skid, release the accelerator or brake pedal to regain vehicle balance. Steer in the direction of the skid to regain control of the vehicle.

Warning signs are usually yellow with black markings. They alert you to conditions that are immediately ahead. This sign is used to warn drivers about an upcoming curve to the right.

You must have evidence of financial responsibility, such as proof of insurance, with you whenever you drive. You must always show proof of insurance and your license to an officer upon request after a traffic stop or collision.

It is illegal to operate a motor vehicle while under the influence of alcohol. Neither drivers nor passengers may possess an open container of alcohol in a motor vehicle while it is in operation.

All temporary signs in work zones have an orange background with black letters or symbols. These signs are found on the right side of the road, or on both the left and right sides if the roadway is a divided highway.

When you are turning left from a two-way street, begin in the lane closest to the centerline and start your turn just before the front of your car reaches the center of the intersection. Do not cut the corner. Steering hand-over-hand, turn into the first available legal lane.

Even if you are facing a green traffic light, do not start across the intersection if there are other vehicles blocking your way. If you are caught in the intersection when the light changes to red, your vehicle will block cross traffic. You can get a ticket for blocking an intersection.

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.

It can be hard to judge the speed of oncoming vehicles. They do not always seem to be coming as fast as they really are. Always be sure you can safely change lanes when passing on a two-lane street. If you are not sure of an oncoming vehicle's speed, wait to pass until the oncoming vehicle has passed and you are sure there is enough space for you to change lanes safely.

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 single broken line indicates that drivers may cross from either lane to change lanes. Dashed yellow lines alongside solid yellow lines indicate that passing is permitted from the lane next to the broken line, but not from the lane next to the solid line. Only change lanes when it is safe to do so.

Slow-moving vehicles, such as farm tractors, road maintenance vehicles, and animal-drawn carts, display an orange and red triangle on the back.

When broken yellow lines separate the lanes of traffic on a two-lane roadway, any driver may pass when there is no oncoming traffic.

A number of drugs can impair your ability to drive, including depressant medications like tranquilizers and sedatives; over-the-counter cough syrups, cold tablets, and allergy medications (which may contain impairing substances like alcohol, codeine, or antihistamines); and illegal drugs.

For drivers age 21 or older, it is illegal to operate a motor vehicle with a blood alcohol concentration (BAC) of 0.08 percent or higher. Driving while under the influence of alcohol is not only illegal, but dangerous.

Your vehicle's blind spots are the areas that you cannot see in your mirrors. Look over the appropriate shoulder to check your blind spot when changing lanes.

If your vehicle is hit from the rear while you are in forward motion, your body will be thrown backward. Brace yourself by pressing against the back of your seat and putting 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.

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.

Regulatory signs provide notice to road users of traffic laws and must be obeyed. Where this sign is posted, making a right turn is prohibited.

On cold, wet days, shaded spots on a roadway can become icy. Shaded areas often freeze before, and thaw out after, the rest of a road.

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.

School buses and tank trucks carrying hazardous materials must stop at all railroad crossings, regardless of the presence of a train. Be prepared to stop at all railroad tracks if following one of these vehicles.

Your safety and the safety of other drivers and pedestrians depends a lot on what you do before driving. Before moving your vehicle, you should adjust your seat, adjust your mirrors, fasten your safety belt, and secure items in and on your vehicle. Do not wait until your vehicle is moving to adjust your mirrors.

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

On the freeway, be ready for changes in traffic conditions. Watch for signals from other drivers. Expect merging vehicles at on-ramps and interchanges and be prepared for rapid changes in road conditions and traffic flow.

If a tire blows out or suddenly goes flat while you are driving, grip the steering wheel firmly and keep the vehicle aiming straight. Take your foot off the accelerator and do not brake. Allow the vehicle to slow by itself and use the brakes gently, but only if necessary. Pull off the road when it is safe to do so.

You must use your headlights at any time when conditions prevent you from seeing other vehicles and when it may be difficult for other drivers to see you. Always use your low beam headlights if weather conditions require you to use your windshield wipers.

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.