Free Texas CDL Hazmat Exam Flashcards

1) UN/NA identification number, 2) proper shipping name, 3) hazard class or division, 4) packing group (Roman numeral, when the material has one) — always in that sequence on the shipping paper.

Immediately before or after the basic description on the shipping paper, alongside the ID number, shipping name, hazard class, and packing group.

RQ marks a Reportable Quantity. If a release of that amount occurs, the carrier has federal reporting obligations. RQ is written with the basic description, not as a separate entry.

It must be listed first, or highlighted in a contrasting color, or marked with an X (or RQ) in a column captioned 'HM' immediately before the description.

In a pouch on the driver's door, or in clear view within immediate reach while the seat belt is fastened — never locked in a toolbox or out of reach.

On the driver's seat or in the driver's door pouch, so they're immediately visible and available to emergency responders.

Two years from the date the carrier accepted the material — extended to three years for hazardous waste manifests.

At least one year after the material was accepted, even though that carrier wasn't the shipper — it's proof the material moved lawfully through the chain.

It must be signed by hand and dated — a typed or stamped name does not satisfy the requirement.

The material's immediate hazards, fire/explosion risk, and first-aid measures, kept accessible to the driver and to emergency responders at all times — it's part of the same paperwork package as the shipping description.

Any amount. Table 1 materials — such as Division 1.1-1.3 explosives, Division 2.3 poison gas, Division 4.3 dangerous-when-wet, Division 6.1 Zone A/B inhalation hazards, and Class 7 radioactive — must be placarded regardless of weight.

1,001 pounds or more of aggregate gross weight of Table 2 materials (most flammable liquids, corrosives, and oxidizers) loaded at one location — 1,000 pounds or less is exempt.

A minimum of four identical placards — one on each side and one on each end — so the hazard is visible from any direction.

2,205 pounds per class. If any one Table 2 hazard class reaches or exceeds that weight, its own specific placard must be used instead of the general DANGEROUS placard.

A 250-millimeter (9.84-inch) square, displayed turned upright on a point (diamond orientation).

Yes — bulk packaging must be placarded even if it holds only the residue of the hazardous material, because residue can still present a hazard.

No. Inhalation hazard materials must be placarded at any amount — there is no low-quantity exception for them.

At least 3 inches from any other markings or advertising, so the placard isn't obscured or confused with unrelated signage.

A label is the smaller diamond marking placed on an individual package to identify its hazard; a placard is the larger diamond displayed on the outside of the transport vehicle itself, visible to responders from a distance.

1 Explosives, 2 Gases, 3 Flammable liquids, 4 Flammable solids, 5 Oxidizers/organic peroxides, 6 Poisonous (toxic) and infectious substances, 7 Radioactive materials, 8 Corrosives, 9 Miscellaneous hazardous materials.

The degree of danger within a hazard class: Packing Group I is greatest danger, II is medium danger, III is minor danger. It refines the hazard class — it doesn't replace it.

Other Regulated Material-Domestic — a consumer commodity with a limited transport hazard. It carries no hazard class number and is authorized for domestic shipment only.

No. Combustible liquids have a higher flash point than flammable liquids and are regulated, but they are not assigned a hazard class number.

1.1-1.3 present a mass explosion hazard or major projection/fire hazard; 1.4-1.6 present only a minor explosion hazard or are extremely insensitive, with much lower risk.

2.1 is flammable gas, 2.2 is non-flammable/non-poisonous compressed gas, and 2.3 is poison (toxic) gas — the most dangerous of the three divisions.

4.1 is a flammable solid, 4.2 is spontaneously combustible, and 4.3 is dangerous when wet — it reacts with water to release flammable gas.

5.1 is an oxidizer that feeds the combustion of other materials (like ammonium nitrate); 5.2 is an organic peroxide, which is both an oxidizer and often unstable or flammable itself.

Classes 1 (explosives), 2.1 (flammable gas), 3 (flammable liquid), 4 (flammable solid), and 5 (oxidizer/organic peroxide) — an open flame near any of these can ignite the material.

Classes 1 (explosives), 2.1 (flammable gas), and 3 (flammable liquid) — a heat source near these materials is an ignition risk.

Classes 1 (explosives), 4 (flammable solids), and 5 (oxidizers) — trapped heat or fumes in an enclosed space raise fire and explosion risk.

The sum of the transport indices of all Class 7 packages on that vehicle may not exceed 50.

Never above any other product — a leak must never be able to drip down onto cargo loaded beneath it.

Refuse to load it, or stop transporting it immediately — a known leaking package must never be moved; doing so is illegal.

It tells drivers and loaders which hazard classes must be kept apart or never loaded together, because combining incompatible classes can cause fire, explosion, or a dangerous chemical reaction.

No — poisonous materials and foodstuffs must never be loaded, transported, or stored together, due to contamination risk.

Within 25 feet of the tank, with an unobstructed view, and the attendant must know the emergency shutoff procedure and remain alert throughout the transfer.

By UN/NA identification number and by proper shipping name, each pointing to a numbered guide page listing the hazards and recommended response actions.

The material's immediate hazards, its fire or explosion risk, and immediate first-aid measures.

(800) 424-8802 — a mandatory federal reporting line called when a hazmat incident causes death, serious injury, or significant property damage.

(800) 424-9300 — a 24-hour hotline for technical chemical information during an emergency. Unlike the NRC, it is not a mandatory incident-reporting line.

A death, a serious injury requiring hospitalization, or property/environmental damage estimated at $50,000 or more.

Within 30 days of the incident — submitted in addition to the immediate phone notification to the National Response Center.

Uphill and upwind whenever possible, staying a safe distance away and never walking into or through the spilled material.

No — never. Some hazardous vapors are dangerous or fatal at concentrations too faint to notice by smell, so identification must come from the shipping papers or placards, not sniffing.

A TSA security threat assessment, mandated by the USA PATRIOT Act, which includes fingerprinting through a TSA-approved vendor after the DPS application is processed.

No — it applies specifically to vehicles carrying Division 1.1, 1.2, or 1.3 explosives. It is not a general rule for all hazard classes.

Never within 5 feet of the traveled roadway — an additional restriction on top of the 300-foot rule for bridges, tunnels, buildings, crowds, and open fires.

An approved location where a vehicle carrying Division 1.1/1.2/1.3 explosives may be left unattended — these loads otherwise require constant attendance, so a safe haven is the authorized exception.

Within 100 feet, with an unobstructed view of the vehicle, awake and alert, and able to move the vehicle if necessary.

Between 15 and 50 feet from the nearest rail, opening a window if needed to listen, before proceeding across.