If you think the road surface may be becoming icy, you can check for ice on your vehicle by opening the window and feeling the front of the side mirror, mirror support, or antenna. If ice has formed on any of these items, the road is likely becoming icy as well.

You can prevent skidding by steering, accelerating, and braking smoothly. If your drive wheels or trailer wheels begin to skid while you are driving a tank vehicle, the vehicle could jackknife.

When inspecting a vehicle with power steering, you should inspect the hoses, pumps, and fluid levels. Specifically check the hoses for leaks.

Driving at excessive speeds is a major cause of fatal crashes. Never drive above the posted maximum speed limit and adjust your speed to fit conditions.

Before coupling together a tractor and a trailer, you should make sure the trailer is at the proper height. If the trailer is too low, the trailer nose may be damaged. If the trailer is too high, it may not be able to couple correctly.

The purpose of an Anti-Lock Braking System (ABS) is to prevent a vehicle's wheels from locking up when the driver brakes hard on a slippery surface.

Wheels or rims with welding repairs are not safe.

The earliest and best way to recognize the beginnings of a trailer skid is by seeing the trailer veer off-course in your mirrors.

Empty tank vehicles often require more space to come to a complete stop than fully-loaded tank vehicles. Wet roads will double a normal stopping distance.

During an inspection, there are a number of tire problems to check for and avoid. Look for air pressure that is too low or too high; excessive wear; cuts or other damage; tread separation; dual tires that come into contact with each other or other parts of the vehicle; mismatched tire sizes; radial and bias-ply tires used together; cut or cracked valve stems; and regrooved, recapped, or retreaded tires on the front wheels of a school bus.

If your trailer goes off course while you are backing, you should pull your truck forward and reposition your vehicle as needed before continuing to back up.

Mirrors should be checked prior to the beginning of a trip. On a vehicle with a trailer, mirror adjustment can only be checked accurately if the connected trailer is straight.

Stopping distance is affected by a vehicle's speed. The faster you are driving, the longer your stopping distance will become.

A shipping paper describes hazardous materials being transported. Shipping orders, bills of lading, and manifests are all shipping papers.

While driving, you should continually scan the road to spot potential hazards in advance. Make emergency plans for how to deal with the hazards if they become dangerous.

A trailer tends to swing around, potentially resulting in a trailer jackknife, if its wheels lock up.

While baffles in a tank inhibit forward and backward surge, they do not prevent side-to-side surge. Surge to the sides can cause rollovers.

Convex mirrors are also known as "fisheye", "spot", or "bug-eye" mirrors.

If a substance is being transported in a reportable quantity, the shipper must display the letters "RQ" on the shipping paper and package.

You must have a CDL with a hazardous materials endorsement to operate a vehicle of any size to transport hazardous materials.