Black ice is a thin layer of ice that is clear enough for the road surface to be seen through it. A road covered in black ice may look like it is merely wet. You should be very careful when temperatures are below freezing and the road looks wet.

Many hazardous materials become more dangerous when exposed to heat. Hazardous materials should be loaded and unloaded away from heat sources.

Smooth bore tanks, also known as unbaffled tanks, contain nothing to slow the movement of liquid and are likely to be affected by front-to-back liquid surge.

Because air pressure increases as air expands in the heat, it is important to monitor your tire pressure when driving in very hot weather. To prevent the engine from overheating, there must be an adequate amount of oil in the engine, as well as enough water and antifreeze in the cooling system. Antifreeze is helpful for the engine in both hot and cold weather.

When hazardous materials placards are required, a vehicle must display four identical placards. A placard should be placed on the front, on the rear, and on both sides of the vehicle.

Air expands as it gets warmer, so the air pressure in your tires could reach dangerously high levels while being used in very hot weather. If this happens, stop and let your tires cool. Do not let air out of the tires, as this could result in the pressure dropping to an unsafe level once the tires cool down.

The National Response Center must be notified of any incident that results in death; hospitalization; $50,000 or more in estimated property damage; an evacuation of the general public or closure of a major transportation route/facility for more then one hour; fire, breakage, spillage, or suspected contamination involving radiation, bacteria, or toxins. Additionally, if the carrier judges the situation to be so serious that it should be reported, it should be reported.

There may be a delay of a few seconds between the sound of a tire failing and the time that the vehicle is affected by the tire failure. Because of the short delay, a driver may initially believe that the sound came from another vehicle.

Always check for traffic in your mirrors before changing lanes. Frequent mirror checks should be a part of your normal scanning routine.

If making a left turn where there is more than one available turn lane, you should always choose to take the rightmost lane. Large vehicles often have to swing right to make left turns, so it is safer for you to have other left-turning traffic to your left. This will allow you to have the best possible view of other turning vehicles and will lower the risk of your vehicle colliding with them.

If an emergency vehicle using its flashing lights is stopped on the side of a multilane road, move over laws require drivers to vacate the lane directly next to the vehicle, if possible. If a driver cannot move over safely, they must slow down and proceed with caution.

Hydroplaning is an effect in which a vehicle's tires lose traction with the surface of the road and instead glide along a layer of water. There does not have to be a large amount of water on the road for this to occur.

The shipper of hazardous materials is responsible for identifying the product's identification number; proper shipping name; hazard class; packing group; and correct packaging, labels, marking, and placards.

It is a driver's responsibility to refuse packages or shipments of hazardous materials if they contain leaks.

To reduce the risk of a rollover when driving a combination vehicle, you should keep the weight of the cargo as low to the ground as possible and drive slowly around turns.

When approaching your vehicle before an inspection, make note of its general condition and ensure that it is not damaged or leaning. Look under the vehicle for fresh leaks of oil, grease, or fuel. Check around the vehicle for hazards to movement, such as people, other vehicles, or low-hanging wires or tree limbs.

When driving with a tank of liquid, you should increase your following distance in order to reduce the need for sudden stops, thereby reducing the chance of liquid surge.

If you are not certain that your vehicle will fit under overhead objects, you should slow down and take a different route, if possible.

Eating while driving can be a dangerous distraction to the driver both because it diverts their attention away from the task at hand and requires them to remove a hand from the steering wheel.

You can build up a "debt" of sleep if you do not sleep for adequate amounts of time. You can only catch up on the time that you "owe" by getting more sleep.