CDL test guide · 50 states

CDL Hazmat Test Guide

Hauling placarded hazardous materials, for endorsement H. Taken for any class.

What every manual says

Shipping papers, placards, loading, and driving and parking with hazardous materials on board.

  1. Hazardous Material

    Every driver involved in hauling hazardous materials must be trained and tested by the employer or its representative, at least once every three years.

    CA · p. 9-2
  2. The Intent of the Regulations

    To communicate the risk, shippers must put hazard warning labels on packages and provide proper shipping papers, emergency response information and placards.

    CA · p. 9-3
  3. Hazardous Materials Transportation—Who Does What

    The carrier takes the shipment to its destination: before transport it checks that the shipper correctly described, marked, labeled and prepared it, and refuses improper shipments.

    CA · p. 9-3
  4. Lists of Regulated Products

    Column 2 lists proper shipping names and descriptions in alphabetical order; proper shipping names are in regular type and must be used on the shipping paper, while names in italics are not proper shipping names.

    CA · p. 9-6
  5. Lists of Regulated Products

    Column 5 shows the packing group in Roman numerals; Column 6 the hazard warning labels shippers must put on packages (some products need more than one label for multiple hazards).

    CA · p. 9-6
  6. Lists of Regulated Products

    Appendix A lists hazardous substances and their reportable quantities (RQ).

    CA · p. 9-6
  7. Lists of Regulated Products

    If INHALATION HAZARD appears on the shipping paper or package, display POISON INHALATION HAZARD or POISON GAS placards in addition to the hazard class placards, even for small amounts.

    CA · p. 9-10
  8. Shipper's Certification

    The shipper certifies on the original shipping paper that packages were prepared by the rules (except a private carrier hauling its own product, or carrier-provided packaging such as a cargo tank).

    CA · p. 9-8
  9. Package Markings and Labels

    Shippers mark packages with the shipper’s or consignee’s name and address, the shipping name and ID number, and required labels.

    CA · p. 9-9
  10. Placarding

    Attach the right placards before you drive; you may move an improperly placarded vehicle only in an emergency, to protect life or property.

    CA · p. 9-9
  11. Placarding

    Placards go on both sides and both ends of the vehicle (the front one may be on the tractor or the trailer).

    CA · p. 9-9
  12. Placard Tables

    Placard Table 1 materials must be placarded in any amount: Divisions 1.1, 1.2 and 1.3 explosives, 2.3 poison gas, 4.3 dangerous when wet, 5.2 temperature-controlled organic peroxide (Type B), 6.1 inhalation hazard zones A and B, and Class 7 Radioactive Yellow III.

    CA · p. 9-10
  13. Placard Tables

    Bulk packaging is a single container with a capacity over 119 gallons.

    CA · p. 9-11
  14. General Loading Requirements

    Class 1 explosives, Class 4 flammable solids and Class 5 oxidizers may not be carried as overhang or tailgate loads; load them in a closed cargo space unless every package is fire and water resistant or covered with a fire and water resistant tarp.

    CA · p. 9-12
  15. General Loading Requirements

    Class 4 flammable solids react (even with fire or explosion) to water, heat and air or even spontaneously.

    CA · p. 9-12
  16. General Loading Requirements

    Class 8 corrosives: if loading by hand, load breakable containers one by one, right side up, without dropping or rolling them, on an even floor.

    CA · p. 9-12
  17. General Loading Requirements

    Some Class 7 radioactive packages (labeled Radioactive II or III) carry a transport index showing the degree of control needed, since radiation passes through nearby packages.

    CA · p. 9-13
  18. General Loading Requirements

    Some products may not be loaded together in the same cargo space (the Segregation Table names them): for example, cyanides or cyanide mixtures (6.1) must not go with acids or corrosives that could release hydrocyanic acid.

    CA · p. 9-14
  19. Tank Loading

    Whoever is in charge of loading or unloading a cargo tank must make sure a qualified person is always watching: alert, with a clear view of the tank, within 25 feet of it, aware of the materials’ hazards and emergency procedures, and authorized and able to move the tank.

    CA · p. 9-15
  20. Compressed Gas

    For compressed gas tanks, keep liquid discharge valves closed except when loading and unloading.

    CA · p. 9-15
  21. Hazardous Materials -- Driving and Parking Rules

    A vehicle with Division 1.1–1.3 explosives must always be watched when parked.

    CA · p. 9-16
  22. Refuel with Engine Off

    Turn off the engine before fueling a vehicle carrying hazardous materials, and someone must always be at the nozzle controlling the fuel flow.

    CA · p. 9-18
  23. Check Tires

    On a hazmat vehicle, examine each tire at the start of each trip and each time you park.

    CA · p. 9-18
  24. Hazardous Materials Emergencies

    The DOT Emergency Response Guidebook (ERG) tells firefighters, police and industry workers how to protect themselves and the public; it is indexed by proper shipping name and identification number, which is why the shipping name, ID number, label and placards must be correct.

    CA · p. 9-19
  25. Fires

    If hazardous materials are spilling, don’t move the vehicle more than safety requires (you may move it off the road and away from crowds if that serves safety).

    CA · p. 9-20
  26. Responses to Specific Hazards

    If a vehicle carrying explosives breaks down or crashes, warn others, keep bystanders away and allow no smoking or open fire nearby.

    CA · p. 9-21
  27. Responses to Specific Hazards

    With flammable liquids in an accident or breakdown, prevent bystanders from gathering, warn people and keep them from smoking.

    CA · p. 9-21
  28. Responses to Specific Hazards

    Many poisons are also flammable, so with Division 2.3 or 6.1 materials take flammable precautions, allow no smoking, flame or welding, and warn others of fire, vapors and contact.

    CA · p. 9-21
  29. Required Notification

    The National Response Center coordinates emergency response to chemical hazards for police and firefighters and keeps a 24-hour toll-free line.

    CA · p. 9-22

Every state's manual: Hazardous Materials

Each links its hazardous materials practice test. Federal CDL rules: endorsement H and the others.