Tractor-trailers take longer distances to stop than smaller cars traveling at the same speed. A fully loaded tractor-trailer may take almost 400 feet to come to a complete stop when driving at 55 mph.

A reflective orange triangle on the rear of a vehicle means it travels only at slow speeds. You may see this sign on roadwork equipment, farm vehicles, or horse-drawn wagons and carriages. It appears as a solid orange triangle during the day and a hollow red triangle at night.

Allow for extra space when driving behind a motorcycle. Motorcycles can stop more quickly than other vehicles can and you must have adequate room to stop if the motorcyclist brakes or falls off. Also, remember that motorcycles are difficult to see at night because they only have one tail light.

Before merging into interstate traffic, you should identify a gap, accelerate to the speed of traffic, and signal. Merge into the gap when it is safe to do so. Be alert to other traffic and do not expect other drivers to clear the lane.

If another vehicle passes you on the left, decrease your speed slightly and keep to the right. When the vehicle has safely passed and is ahead of you, resume your normal speed.

Every impaired or intoxicated driver is dangerous, both to themselves and to others on the road.

At intersections that are controlled by signs or signals and at intersections that are uncontrolled, the driver on the left must yield the right-of-way to the driver on the right when two vehicles arrive to the intersection at the same time.

While it can create special problems for large vehicles, strong wind can cause problems for all drivers. Wind can lower visibility by blowing dirt and dust into the roadway, but it can sometimes also physically move a vehicle.

Arrows may be used to indicate which lanes should be used for specific purposes, such as driving straight or making a turn.

You must stop at a railroad crossing where signs, warning devices, or flaggers warn you of the presence of a train. It is illegal to drive around lowered gates.

This sign indicates that you are approaching a railroad crossing. You must look, listen, slow down, and prepare to stop. Wait for any trains to pass before you proceed.

Large trucks take longer to stop than other vehicles traveling at the same speed. The average passenger vehicle traveling at 55 mph can stop within 400 feet. However, a large truck traveling at the same speed can take almost 800 feet to stop.

Do not become distracted by looking at passengers, attempting to find something in your vehicle, looking at reading material, sightseeing, or daydreaming while driving. Continue scanning the road, checking your mirrors, and looking at the instrument panel at regular intervals. Developing these safe habits will keep you attentive as a driver.

You may cross a single solid line to pass other vehicles or change lanes, but only if obstructions on the road or in traffic make the lane change necessary.

Yield to pedestrians and cars that may be caught in an intersection when you have a green light. Be careful around pedestrians under every circumstance.

Alcohol reduces reaction time, reduces your ability to see clearly, changes your judgment of speed and distances, often makes you less inhibited, and makes you more prone to take chances. It is especially dangerous to drink and drive after dark because alcohol reduces your ability to recover from the glare of headlights.

Blood alcohol content (BAC) is normally determined by a chemical test of breath, blood, urine, or saliva. However, a chemical test is not necessary to prove that you were intoxicated or impaired. The testimony of a police officer about how you were driving, or your appearance and behavior when arrested, can provide enough evidence to convict you, even without a chemical test.

This sign warns that the road is slippery when wet.

Decrease your speed as you approach an intersection with a yield sign. Prepare to stop and yield the right-of-way to vehicles and pedestrians in the intersection or crossroad. You must come to a full stop at a yield sign if traffic conditions require it.

Continuous hard braking on snow and ice can result in the locking of the front brake, causing a loss of steering. To avoid the need for excessive braking, make sure to maintain an appropriate speed for conditions.