Texting while driving a CMV is prohibited. "Texting" is defined as manually entering text into, or reading text from, an electronic device.

Pre-trip inspections should be conducted in the same way every time. This will reinforce the steps, making it less likely that you will forget to inspect something important.

A vehicle inspection should be completed in the same order every time. This will make it easier for you to learn all of the steps and will make it less likely that you will forget to check something.

To avoid hitting anything behind you, make sure that your vehicle does not roll back when you start from a complete stop.

Hazardous materials warning placards are usually diamond-shaped.

It is essential that a driver always uses proper signals to make their intentions known to others on the road.

When driving a tractor-trailer combination equipped with an Anti-Lock Braking System (ABS), you should brake in the same manner that you would in a vehicle without ABS.

If you must make a quick stop to avoid an accident while transporting liquid cargo, it may be a good idea to use the stab braking method. Remember that attempting to steer quickly while braking may cause your vehicle to tip over, especially if it has a high center of gravity.

When turning, drivers usually look in the direction of their turn. If a driver fails to signal before a turn or lane change, their body movements may still provide a clue that they are planning to turn.

Always speed up smoothly and gradually so that your vehicle does not jerk. Rough acceleration can cause mechanical damage.

The shipper of hazardous materials is responsible for using the hazardous materials regulations to determine the product's identification number, proper shipping name, hazard class, and packing group. They are also responsible for determining the correct packaging, labels, markings, and placards to use.

In vehicles equipped with an automatic tractor protection valve, the valve will pop out if air pressure drops to a level between 20 and 45 psi. When the valve pops out, the protection valve will close, stopping the flow of air.

The heavier a vehicle is, the more the brakes will need to work to bring the vehicle to a complete stop.

An empty combination vehicle will come to a complete stop more slowly than a fully-loaded vehicle. The stiff suspension springs and strong brakes will have lower traction on a light trailer than they would if the vehicle carried more weight.

For the first step of a vehicle inspection, you should review the last inspection report on your vehicle, if there is one. The carrier should have repaired any problems noted on the report.

When filling a tank that is divided by bulkheads, make sure that you do not place too much weight on the front or rear of the vehicle.

Placards must be placed on the outside of vehicles carrying hazardous materials. They identify the specific class or classes of materials being carried and warn others of relevant hazards.

Be cautious when driving near people who are working on a disabled vehicle on the side of the road. They may be focused on the repair and not paying attention to nearby traffic.

If a cargo of hazardous materials begins to leak, do not move your vehicle any more than safety requires. If you continue to drive, an even larger area will become contaminated. Instead, you should park your vehicle, secure it, stay with the vehicle, and contact the proper emergency personnel. If you do not have access to a phone, you should send someone else to get help.

If you discover a leak in a cargo of hazardous materials, identify the materials in question by using the shipping papers, labels, or package location. Do not touch the leaking material.