Hazardous materials are categorized into nine major hazard classes and additional categories for consumer commodities and combustible liquids.

If the words inhalation hazard appear on the shipping paper or package, the rules require display of the poison inhalation hazard or poison gas placards, as appropriate.

Remove all explosives before separating vehicles involved in a collision. Place the explosives at least 200 feet from the vehicles and occupied buildings. Stay a safe distance away.

The signed shipper's certification appears on the original shipping paper. The only exceptions are when a shipper is a private carrier transporting their own product and when the package is provided by the carrier.

You might break down and have to use stopped vehicle signals. Use reflective triangles or red electric lights, never use burning signals, such as flares or fuses around a tank used for Class 3 (Flammable Liquids) or Division 2.1 (Flammable Gas) whether loaded or empty, and any vehicle loaded with Division 1.1, 1.2, or 1.3 Explosives.

Class 8 - Corrosive Materials.

Radiation surrounds each package, passing through all nearby packages. To deal with this problem, the number of packages you can load together is controlled. Their closeness to people, animals, and unexposed film is also controlled. The transport index tells the degree of control needed during transportation.

When transporting hazardous wastes, you must sign by hand and carry a Uniform Hazardous Waste Manifest

Means the hazardous material described in Column 2 is subject to the HMR only when offered or intended for transport by air and/or water unless it is a hazardous substance or hazardous waste.

Ground a cargo tank correctly before filling it through an open filling hole. Ground the tank before opening the filling hole and maintain the ground until after closing the filling hole.

The total transport index of all packages in a single vehicle must not exceed 50.

If transporting Division 1.1, 1.2, or 1.3 explosives, you must have a written route plan and follow that plan. Carriers prepare the route plan in advance and give the driver a copy

Don't transfer flammable liquid from one vehicle to another on a public roadway except in an emergency.

Column 3 shows a material's hazard class or division, or the entry "Forbidden." Never transport a "Forbidden" material.

Placards must be readable from all four directions. They must be at least 10 3/4 inches square, turned upright on a point, in a diamond shape.

Use extra care to protect explosives. Never use hooks or other metal tools. Never drop, throw, or roll packages. Protect explosive packages from other cargo that might cause damage

Shippers print required markings directly on the package, an attached label, or tag. When required, the shipper will put the following on the package: the name and address of shipper or consignee, the hazardous material's shipping name and identification number, and the labels required.

Never drive a placarded vehicle near open fires unless you can safely pass without stopping.

A hazard class name or ID number may not be used to describe non-hazardous materials.

Identifies a proper shipping name that is used to describe materials in international transportation. A different shipping name may be used when only domestic transportation is involved.

Never continue driving with hazardous materials leaking from your vehicle in order to find a phone booth, truck stop, help, or similar reason. If hazardous materials are spilling from your vehicle: Park it, secure the area, stay there, send someone else for help.

You must identify shipping papers related to hazardous materials or keep them on top of other shipping papers. You must also keep shipping papers: In a pouch on the driver's door, or in clear view within reach while driving, or on the driver's seat when out of the vehicle.

Do not smoke within 25 feet of a placarded cargo tank used for Class 3 (flammable liquids),Division 2.1 (gases), or Class 1 (Explosives) Class 3 (Flammable Liquids) Class 4 (Flammable Solids) Class 4.2 (Spontaneously Combustible). Oxidizers fall under flammable solids.

The three intents are: Contain the Material; Communicate the Risk; and Assure Safe Drivers and Equipment.

Acids, corrosive materials, or other acidic materials which could release hydrocyanic acid. For Example: Cyanides, Inorganic, Silver Cyanide, or Sodium Cyanide.

In addition to the two main locations for the hazardous material identification number, you must also display it on the cargo tanks and on all bulk packaging.

Follow this checklist: Check to see that your driving partner is OK, keep shipping papers with you, keep people far away and upwind, warn others of the danger, and call for help.

When transporting hazardous wastes, you must sign by hand and carry a Uniform Hazardous Waste Manifest. Shippers must prepare, date, and sign by hand the manifest. Each carrier transporting the shipment must sign by hand the manifest. Each copy must have all needed signatures and dates, including those of the person to whom you delivered the waste.

The hazardous materials test required if you want to haul hazardous materials as defined in 49 CFR 383.5. In order to obtain this endorsement, you are also required to pass a Transportation Security Administration (TSA) background check.

A shipping paper for hazardous materials must include: Page numbers if the shipping paper has more than one page, a proper shipping description for each hazardous material, and shipper's certification signed by the shipper saying they prepared the shipment according to the regulations.