Wisconsin CDL: Hazardous Materials Practice Test

Not quite. The answer is a placarded cargo tank.

Division 1.1 or 1.2 materials (explosives) must not be transported in a combination vehicle if there is a placarded cargo tank in the combination. (The placarded cargo tank might hold flammable gases or liquids, for example.)

Not quite. The answer is how to package, load, transport, and unload hazardous materials safely.

Containment rules cover the entire process of transporting hazardous materials safely, from how to package them safely to how to unload them safely at the end of the trip.

Not quite. The answer is Class 4

Division 4.3 materials are Dangerous When Wet. An example is potassium metal. Potassium reacts with water to produce hydrogen gas. The reaction is so strong that the hydrogen gas ignites. (This effect is sometimes demonstrated in school science classes.) Under federal regulations, all materials in Classes 4 and 5 that can become dangerous when wet must be kept dry during loading, transport, and unloading.

Source: 49 CFR 177.838

Not quite. The answer is Call emergency personnel if needed.

Never try to repack leaking containers. Unless you have the training and equipment to repair leaks safely, don't try it. Call your dispatcher or supervisor for instructions and, if needed, emergency personnel. If an accidental release of hazardous materials results in death, hospitalization, over $50,000 in property damage, or other major problems, you or the carrier must phone the National Response Center immediately.

Not quite. The answer is you will have to use placards.

The hazard classes listed in Placard Table 1 are particularly hazardous. These include mass explosives (1.1) and toxic gases (2.3). You must use placards to carry any amount of the hazard classes in Placard Table I.

Not quite. The answer is The shipper

The federal Hazardous Materials Regulations require shippers to provide adequate warning of the dangers associated with the hazardous materials. The regulations require shippers to put hazard warning labels on packages and provide proper shipping papers, emergency response information, and placards.

Not quite. The answer is None of the above

Under federal regulations, you must not drive a placarded vehicle carrying non-radioactive hazardous materials through or near heavily populated areas, places where crowds are assembled, tunnels, narrow streets, or alleys, except if the carrier determines that (1) there is no practicable alternative; (2) a reasonable deviation is necessary to reach terminals, points of loading and unloading, facilities for food, fuel, repairs, rest, or a safe haven; or (3) a reasonable deviation is required by emergency conditions, such as a detour that has been established by a highway authority, or where a law enforcement official requires you to take an alternative route. Note: States and localities often place additional restrictions on allowed routes for various classes of hazardous materials. Check the laws and regulations of the places where you'll be driving.

Source: 49 CFR 397.67

Not quite. The answer is Close all manholes and valves. Be sure they are free of leaks.

Before you start to drive a vehicle with a cargo tank containing hazardous materials, make sure that the manholes and valves are closed and leak-free. It is illegal to move a cargo tank containing any amount of hazardous materials for any distance if any valves or covers are open.

Not quite. The answer is diamond shaped.

Shippers put diamond-shaped hazard warning labels on most hazardous materials packages. These labels inform others of the hazard. If the diamond label won't fit on the package, shippers may put the label on a tag securely attached to the package.

Not quite. The answer is All of the above are major differences.

The major differences between cargo tanks and portable tanks are about the permanence of cargo tanks. Since cargo tanks are permanently attached to commercial vehicles, they are filled while on the vehicles, and they do not need to display the owner's name separately. Portable tanks are loaded and unloaded while they are off the vehicle. Portable tanks are then put on a vehicle for transportation. They must display the owner or lessee's name.

Not quite. The answer is At the start of each trip and every time you stop

If you have a placarded trailer with dual tires, you should check the tires at the start of each trip and each time that you stop for any reason, whether to rest or to refuel. Use a tire pressure gauge to get an accurate reading.

Not quite. The answer is UN 1090, Acetone, 3

The basic description of hazardous materials includes the identification number, the proper shipping name, the hazard class or division, and the packing group, if any, in that order. The packing group is a grouping by the degree of danger as shown for that hazardous material in the Hazardous Materials Table. Packing Group I indicates great danger; Packing Group II, medium danger; and Packing Group III, minor danger. (The answer choices for this question do not include the packing group.)

Source: 49 CFR §§ 172.101 and 172.202

Not quite. The answer is 1,001 pounds or more.

To transport hazardous materials listed in Placard Table 2, you must use placards only if you are transporting a total of 1,001 pounds or more. If you are transporting more than one hazardous material, find out the amount of each from its shipping paper.

Not quite. The answer is 10

All placarded vehicles are required to have a fire extinguisher with a minimum UL rating of 10 B:C. That is, it must be able to extinguish a 10-square-foot class B fire (which includes almost all flammable liquids) and be electrically non-conductive (hence its C rating).

Not quite. The answer is 4 psi.

One of the most common types of cargo tanks is the DOT-406, typically used for fuel delivery. A semi-truck with a DOT-406 mounted to the semitrailer is commonly called a "gasoline truck." DOT-406 tanks have a low maximum allowable working pressure (MAWP) of 4 psi.

Not quite. The answer is PHMSA

The Pipeline and Hazardous Materials Safety Administration (PHMSA) isn't just about pipeline transport. PHMSA develops and enforces regulations for the safe, reliable, and environmentally sound transportation of energy products by pipeline and of hazardous materials by land, sea, and air. PHMSA establishes national policies, sets and enforces standards, educates, and conducts research to prevent hazmat incidents. PHMSA is also the agency that publishes the Emergency Response Guidebook (ERG). (Note: This topic is not usually found in the official state CDL handbook.)

Not quite. The answer is read the shipping papers and package labels to identify the materials.

If you discover a hazardous materials cargo leak, use the shipping papers, the package labels, or the package locations to help you identify which materials are leaking. Do not touch any leaking material; you can injure yourself by touching hazardous materials. Do not use your sense of smell to identify the material; inhaling toxic gases can be dangerous.

Not quite. The answer is 15 to 50

If your vehicle is placarded, you must stop between 15 and 50 feet from the nearest rail at a railroad crossing. After you have done this, proceed once you are sure that no train is approaching, and do not shift while you are on the tracks.

Not quite. The answer is a non-hazardous material.

To avoid confusing anyone (such as emergency services) who might need to read the shipping papers, you should never use hazardous material names or identification numbers to denote non-hazardous materials.

Not quite. The answer is Only during an emergency, to protect life or property

Normally, when your vehicle is carrying hazardous materials, you must attach the appropriate placards to the vehicle before you drive it. You are allowed to move an improperly placarded vehicle only during an emergency, to protect life or property.