Louisiana CDL: Hazardous Materials Practice Test

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 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 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.

Not quite. The answer is Radioactive Materials

A material’s hazard class reflects the risks associated with it. There are nine hazard classes. Class 7 materials are radioactive materials. These include radioactive metals, ionization smoke detectors that contain the isotope Americium 241, medical and scientific isotopes, and spent nuclear fuel.

Not quite. The answer is to communicate the risk.

The hazardous materials regulations are designed to help ensure the safety of shippers, carriers, drivers, and the general public. One way they do this is by requiring that packages of hazardous materials and the vehicles that transport them be clearly marked and accompanied by appropriate shipping papers. This lets emergency personnel and the public know the risks involved.

Not quite. The answer is 2

A material’s hazard class reflects the risks associated with it. There are nine hazard classes. Class 2 includes various gases: flammable gases (2.1), such as propane; non-flammable gases (2.2), such as helium; and toxic gases (2.3), such as compressed fluorine.

Not quite. The answer is 100 mm

The hazardous material identification numbers must be displayed on portable tanks, cargo tanks, and other bulk packaging. The regulations require black 100 mm (3.9 inch) numbers on orange panels, placards, or a white, diamond-shaped background if no placards are required.

Not quite. The answer is Yes.

If your vehicle is placarded, you must stop 15 to 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 gears while you are on the tracks.

Not quite. The answer is tabbing them.

You should clearly distinguish hazardous materials shipping papers from other materials' shipping papers by tabbing them or keeping them on top of the stack of papers.

Not quite. The answer is The name of a hazardous material used in scientific journals and texts, recognized as its chemical and microbiological name

The technical name is one used by scientists, which appears in journals, articles, and technical handbooks. It provides a standard terminology for dangerous substances, instead of slang terms that can vary (to dangerous effect) from region to region.

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 C) the manufacturing date of the material.

You do not need to know when a product was manufactured or expires unless your company has an additional responsibility. You do need to know the amount of the hazardous material being shipped, its hazard class, and the total amount of all the hazardous materials of all classes that will be carried on your commercial vehicle during your trip.

Not quite. The answer is 25 feet of the vehicle.

You should not risk smoking in close proximity to any class of hazardous material. However, there are specific rules for the following classes: No smoking within 25 feet of classes 3 and 2.1 (flammable materials and gases). No smoking or holding a lighted smoking object such as a cigar or pipe within 25 feet of classes 1, 3, 4.1, 4.2, or 5 (explosives, oxidizers, flammable liquids or solids, or spontaneously combustible materials).

Not quite. The answer is by air.

The letter 'A' means the hazardous material described in Column 2 is subject to the Hazardous Materials Regulations only when offered or intended for transportation by air, unless it is a hazardous substance or hazardous waste.

Not quite. The answer is 2 years.

Federal regulations normally require every HazMat employee to be retrained every three years. However, a driver who transports route-controlled radioactive materials must have received written training within the past two years, on the following topics: (1) the federal regulations governing the transportation of radioactive materials, (2) the properties and hazards of the radioactive materials that the driver is to transport, and (3) the procedures that the driver must follow in the event of an accident or other emergency. The driver must hold a certificate of training as evidence of this required training. [49 CFR § 172.704],

Source: 49 CFR § 397.101

Not quite. The answer is 9

There are nine different hazard classes. The table "Hazardous Materials Class" in your state CDL handbook lists the types of materials in these hazard classes.

Not quite. The answer is the shipper.

The shipper packs the hazardous materials for transport. The shipper must determine the correct identification number and record it on the packages and the shipping papers. (In the event of an accident, first responders are trained to look first at the packages and the shipping papers for the identification number.)

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 a common carrier must never transport the material.

If a material is listed as "Forbidden" in column 3 of the Hazardous Materials Table, you must not transport any amount of that material. An example is silver fulminate (dry), an extremely sensitive explosive. (It's so sensitive that a sufficiently large quantity will explode under its own weight.)