Texas CDL: Hazardous Materials Practice Test

Not quite. The answer is indicates the degree of control needed during transportation.

A package of radioactive materials is not fully radiation proof. Some radiation can pass right through the package, possibly contaminating its immediate environment. The transport index of a package of radioactive material describes the highest level of radiation (in millirems per hour) that is expected at a distance of one meter (about 39.37 inches) from the surface of the package. With this information, the package can be kept safely far enough away from other packages, photographic film, live animals, or people (including yourself).

Not quite. The answer is Any of the above

Under federal regulation 49 CFR 171.16, you must submit a Hazardous Materials Incident Report if an unintentional release of hazardous materials occurs. You must also submit a Hazardous Materials Incident Report if any of the following incidents occurs, even if hazmat is not released: (1) a reportable incident (death, injury, evacuation, etc.) occurs; (2) the lading retention system of a cargo tank containing hazmat is damaged; (3) undeclared hazmat is discovered; or (4) a fire, violent rupture, explosion, or dangerous evolution of heat occurs that might damage the packaging of the hazmat. Note: The "lading retention system" of a cargo tank consists of those items or pieces of equipment that provide containment of the hazmat.

Not quite. The answer is make it easy to identify.

The regulations for packages of hazardous materials require shippers to make it easy for drivers, destination personnel, and emergency personnel to identify the contents quickly and easily.

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 MC-306 (DOT-406)

MC-306 (DOT-406) cargo tanks carry liquids under very low or no pressure (maximum allowable pressure of 3 psi for MC-306 and 4 psi for DOT-406). The cargo tank has an oval or elliptical cross section and is usually compartmented. These tanks are commonly used to carry gasoline, diesel fuel or fuel oil, and other flammable liquids.

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 Toxic Gases

Your CDL Handbook includes Placard Tables 1 and 2. Division 2.3 (Toxic Gases) is in Placard Table 1. Any amount of hazardous materials listed in Placard Table 1 must be placarded. Class 3 (Flammable Liquids) and Class 8 (Corrosives) are in Placard Table 2. Except for bulk packaging, the materials in Placard Table 2 must be placarded only if the total amount transported is 1,001 pounds or more, including the packages.

Not quite. The answer is 3 years; 2 years

When shipping hazardous materials, the shipper must keep a copy of the shipping papers for three years for hazardous waste, or for two years for other hazardous materials.

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 Yes.

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 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 Yellow III

A package of radioactive materials is not completely radiation proof. Some radiation can pass through the package. There are three different diamond-shaped "RADIOACTIVE" labels that can be affixed to a package of radioactive materials: White I, Yellow II, and Yellow III (in Roman numerals), depending on how much radiation is detectable at the surface of the package. Yellow III packages have the highest detectable radiation level at the package surface. (Note: This topic is not usually found in the official state CDL handbook.)

Not quite. The answer is The shipper

The shipping papers describe the hazardous material and its quantity, among other things. The shipper must fill out the shipping papers because the shipper packages the material. Only the shipper knows exactly what's inside the package. Except in an emergency, no one else should open the package to see what's inside until the package is delivered to the receiver.

Not quite. The answer is Class 7 (radioactive materials)

Class 7 (radioactive materials) must be controlled by a transport index that tells each transport company and truck driver how much they can carry. The radiation given off by radioactive materials could contaminate the rest of the load.

Not quite. The answer is bulk packaging permanently attached to your vehicle.

Cargo tanks are tanks that are permanently attached to a commercial vehicle. There are many different styles for transporting a variety of different materials.

Not quite. The answer is Both of the above

Chlorine gas is both toxic and oxidizing. It can react with flammable materials and start fires, which can spread corrosive or toxic gases. Federal regulation 49 CFR 177.840 requires every driver hauling chlorine to have available a gas mask rated for protection against chlorine gas, and a repair kit to repair leaks in fittings on the dome cover plate of the vehicle.

Not quite. The answer is Do both of the above.

If there is an emergency involving the hazardous materials that you're transporting, follow all instructions that your employer gave you. Keep bystanders away, preferably upwind, while warning them of the danger. Try to keep open flames away and don't let anyone smoke near the hazardous materials. Take a copy of your shipping papers with you to provide to first responders who arrive at the scene.

Not quite. The answer is The identification number

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.

Source: 49 CFR §§ 172.101 and 172.202

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

According to federal regulation 49 CFR 397.13, no one is allowed to smoke or carry a lighted cigarette, cigar, or pipe, within 25 feet of a truck that transported Class 3 materials (flammable liquids) or Division 2.1 materials (flammable gases). This rule applies even after the truck was emptied of these hazardous materials.