Column 2 of the Hazardous Materials Table lists the proper shipping names and descriptions of regulated materials.

Column 2 of the Hazardous Materials Table lists the proper shipping names and descriptions of regulated materials.

If you need to refuel a vehicle carrying hazardous materials, you must first turn off the engine. While refueling, someone must be at the nozzle and controlling the fuel flow at all times.

Shippers of hazardous cargo must alert drivers and others to relevant hazards through proper shipping papers, hazard warning labels on packages, emergency response information, and placards.

One clue that a shipment may contain hazardous materials is that the shipper is in a line of business that you would expect to involve hazardous materials. Examples of such businesses include paint dealers, chemical suppliers, scientific supply houses, pest control companies, agricultural suppliers, and dealers in explosives, fireworks, or munitions.

Radiation surrounds packages of radioactive materials and passes through to other nearby packages. To address this, the number of radioactive packages that can be loaded together is limited.

When the vehicle is being driven, hazardous materials' shipping papers must be kept in a pouch on the driver's door or somewhere else that is in clear view and within the driver's reach. If the driver is outside of the vehicle, the shipping papers should be kept on the driver's seat.

Hazardous materials employees must be trained and tested at least once every three years. Drivers must learn the risks associated with hazardous materials and be able to properly respond to security threats.

When marking hazardous materials in an "HM" column on a shipping paper, the letters "RQ" may be used instead of an "X" if a reportable quantity of the material must be identified.

There are nine different hazard classes. A material's hazard class reflects its associated risks.

While shippers of hazardous materials are responsible for providing necessary placards, it is the driver's responsibility to actually place them on the vehicle.

Hazardous materials warning placards must be used on all four sides of a vehicle transporting hazardous materials.

Hazardous materials placards must be positioned so any words or numbers can be read from left to right. They must be at least three inches away from any other markings.

Many products classed as poison are also flammable. Take the appropriate precautions if you think your cargo may be flammable.

Hazardous materials should always be loaded away from heat sources. Many materials become more hazardous if their temperatures increase.

Shipping papers for hazardous materials should always be easily accessible. When a driver is not in their vehicle, hazardous materials' shipping papers should be left on the driver's seat.

Use a floor lining when transporting Division 1.1, 1.2, or 1.3 materials. The floors should be tight and the liner must be made from either non-metallic material or non-ferrous metal. Non-ferrous metals are metals that do not contain iron or iron alloys.

Drivers must be aware of the risks associated with materials they are transporting. Hazardous materials shipping papers must include an emergency response telephone number.

Shippers of hazardous materials are required to provide emergency response information to drivers.

Flammable gases are assigned to hazardous materials Class 2.

Except when parking briefly to perform necessary functions for vehicle operation (such as refueling), never park a vehicle carrying Division 1.1, 1.2, or 1.3 explosives within 300 feet of a bridge, tunnel, or building. Never park such a vehicle within five feet of the traveled portion of a road. Such vehicles should be parked only briefly.

Keep liquid discharge valves on a compressed gas tank closed, except when loading and unloading.

The person in charge of loading or unloading a hazardous materials cargo tank must ensure that a qualified person is always supervising the process. The supervisor must be alert; have a clear view of the tank; be within 25 feet of the tank; know the hazards of the involved materials; know the procedures to follow in the case of an emergency; and be authorized to and capable of moving the tank.

Emergency response information for a shipment of hazardous materials must include details about any immediate hazards to health that are associated with the materials.

The third column of the Hazardous Materials Table lists items' hazard classes and divisions. Drivers should never transport a material that is marked by the word "Forbidden."

Hazardous materials packages with containers of liquid inside must have orientation markings with arrows pointing in the direction that should be upright.

Hazardous materials placards are placed on the outside of a vehicle to identify the hazard classes of materials being carried.

A driver transporting chlorine in cargo tanks must keep an approved gas mask and an emergency kit in their vehicle.

When a shipping paper includes both hazardous and non-hazardous materials, one acceptable method of identifying the hazardous items is to highlight them in a contrasting color.

When hazardous materials placards are required, a vehicle must display four identical placards. A placard should be placed on the front, on the rear, and on both sides of the vehicle.