CDL Hazmat Endorsement — All Questions

What is the main purpose of the hazardous materials regulations?

• a.To require all drivers to carry a firefighting certificate
• b.To contain the product, communicate the risk, and ensure safe transportation✓
• c.To increase the cost of shipping dangerous goods
• d.To limit hazmat shipments to daylight hours only

The regulations exist to contain the material, communicate its hazards to everyone in the transportation chain, and make sure it is transported safely. Containment, communication, and safe transport are the three core goals. They protect drivers, the public, and emergency responders.

Who is responsible for making sure a shipper correctly names, labels, and marks a hazardous materials shipment?

• a.The shipper✓
• b.The consignee (receiver)
• c.The driver only
• d.The state police

The shipper uses the regulations to determine the product's proper shipping name, hazard class, identification number, and required labels and markings. The shipper certifies on the shipping paper that the shipment was prepared according to the rules. The carrier and driver must still check that the shipment appears correct before transport.

Where must a driver keep hazardous materials shipping papers while driving?

• a.Locked in the trailer with the cargo
• b.In the truck's engine compartment
• c.Mailed ahead to the destination
• d.Within reach and in a pouch on the driver's door or on the seat within reach✓

Shipping papers must be readily available to emergency responders. When driving, keep them in a pouch on the driver's door or in clear view on the seat within your reach. When you leave the vehicle, they go on the driver's seat or in the door pouch.

What column of the Hazardous Materials Table lists the identification number for a material?

• a.The packing group column
• b.The identification numbers column✓
• c.The label codes column
• d.The proper shipping name column only

The Hazardous Materials Table has separate columns, and the identification numbers column provides the four-digit UN or NA number assigned to each material. This number appears on shipping papers and often on placards. It helps responders quickly identify the product.

An entry in the Hazardous Materials Table with a plus (+) in the first column means what?

• a.The material requires no shipping paper
• b.The shipping name and hazard class are fixed and cannot be changed✓
• c.The material is forbidden from transport
• d.The driver may choose any hazard class

A plus sign locks the proper shipping name, hazard class, and packing group for that entry even if the material does not otherwise meet the class definition. It removes any judgment about the classification. This keeps naming consistent across shippers.

What does the letter 'G' in the first column of the Hazardous Materials Table indicate?

• a.A technical name must be added in parentheses on the shipping paper✓
• b.The material is a gas
• c.The material is government-owned
• d.The shipment is exempt from placarding

The letter G means the proper shipping name is a generic description, so the shipper must add the specific technical name of the hazardous material in parentheses. This gives responders more precise information. It applies to entries like 'Compound, cleaning liquid.'

Which hazard class covers explosives?

• a.Class 1✓
• b.Class 3
• c.Class 9
• d.Class 8

Class 1 is explosives, divided into divisions 1.1 through 1.6 based on the type and severity of the explosion hazard. Class 3 is flammable liquids, Class 8 is corrosives, and Class 9 is miscellaneous. Knowing the class numbers helps you read placards and shipping papers.

On a shipping paper, how must a hazardous material be described relative to non-hazardous items?

• a.It must stand out by being listed first, highlighted, or marked with an 'X' or 'RQ' in the HM column✓
• b.It must be shipped on a separate truck
• c.It may be listed anywhere on the page
• d.It must be listed last

Hazardous materials must be clearly distinguished from other cargo on a mixed shipping paper. This is done by listing them first, printing them in a contrasting color, or placing an 'X' (or 'RQ') in a column labeled HM before the shipping name. This ensures responders can find the entry quickly.

In what order must the basic description of a hazardous material appear on a shipping paper?

• a.Proper shipping name, packing group, ID number, hazard class
• b.Hazard class, packing group, shipping name, ID number
• c.Identification number, proper shipping name, hazard class, packing group✓
• d.Packing group, ID number, hazard class, shipping name

The basic description sequence is identification number, proper shipping name, hazard class or division, and packing group. This standardized order lets carriers and responders read the entry consistently. Any technical names in parentheses follow the proper shipping name.

What must a driver do before transporting a hazardous material shipment?

• a.Repackage the material into stronger containers
• b.Add extra placards for safety
• c.Make sure the shipment is properly identified, marked, labeled, and not leaking✓
• d.Remove all labels to prevent theft

The driver should accept a shipment only if it is properly described on the shipping paper, correctly marked and labeled, and shows no signs of leaks. Refusing a leaking or improperly prepared shipment is part of the driver's responsibility. Never transport a package that is leaking hazardous material.

What does the term 'RQ' on a shipping paper indicate?

• a.The route is restricted to highways
• b.The shipment is a return quantity
• c.A reportable quantity of a hazardous substance is present✓
• d.The material requires refrigeration

RQ stands for reportable quantity, meaning the package contains a hazardous substance at or above the amount that must be reported if released. It appears before or after the basic description. A spill of an RQ material must be reported to the National Response Center.

A driver who transports certain hazardous materials must have what special document in addition to a CDL?

• a.A firefighter license
• b.A hazardous materials endorsement on the CDL✓
• c.A hazmat insurance card
• d.A passport

To haul placardable amounts of hazardous materials, a driver must obtain the H endorsement on the commercial driver's license. This requires passing a knowledge test and a Transportation Security Administration background check. The endorsement must be renewed periodically.

What background check is required before a driver can receive a hazmat endorsement?

• a.A credit history check
• b.A drug test administered by the DMV
• c.A vision-only medical exam
• d.A Transportation Security Administration (TSA) security threat assessment✓

Federal law requires the TSA to conduct a security threat assessment, including a criminal history and immigration check, before a state issues a hazmat endorsement. This was added to reduce the risk of hazardous materials being used in terrorism. Drivers must be fingerprinted as part of the process.

What is the proper shipping name column used for on the Hazardous Materials Table?

• a.Indicating the color of the placard
• b.Listing the manufacturer's brand name
• c.Providing the regulated name that must appear on shipping papers and packages✓
• d.Showing the retail price of the product

The proper shipping name is the standardized name assigned by the regulations and must be used on shipping papers and package markings. Trade names or brand names cannot be substituted. Proper shipping names appear in regular type in the table.

What information must a hazmat shipping paper include besides the basic description?

• a.The total quantity, unit of measure, and the shipper's certification✓
• b.The weather forecast for the route
• c.The retail sales price
• d.The driver's home address

A shipping paper must show the total quantity and unit of measure of the hazardous material along with the shipper's signed certification that the shipment is properly prepared. The number and type of packages may also be shown. The certification confirms the shipment meets the regulations.

Which document tells emergency responders how to handle an incident involving a specific hazardous material?

• a.The bill of lading only
• b.The Emergency Response Guidebook (ERG)✓
• c.The vehicle registration
• d.The driver's logbook

The Emergency Response Guidebook is used by responders to identify hazards and take initial protective actions based on the material's ID number or name. Drivers should also carry emergency response information for the materials they transport. This information must be available at all times during transport.

What must a driver do if a hazardous material is not listed by its specific name in the Hazardous Materials Table?

• a.Invent a new shipping name
• b.Refuse to identify the material at all
• c.Ship it without any description
• d.Use the most appropriate generic or 'n.o.s.' shipping name that matches the hazard class✓

When a specific name is not listed, the shipper selects an appropriate generic or 'not otherwise specified' (n.o.s.) entry that best describes the material's hazard class. The technical name is then added in parentheses when required. This keeps the shipment properly classified.

Class 8 hazardous materials are known as what?

• a.Corrosives✓
• b.Flammable gases
• c.Radioactive materials
• d.Oxidizers

Class 8 covers corrosive materials such as acids and bases that can destroy skin or corrode metal. Class 2 covers gases, Class 7 covers radioactive materials, and Class 5 covers oxidizers. Corrosives require careful handling to prevent contact and container damage.

What is the packing group of a material used to indicate?

• a.The number of placards needed
• b.The truck weight limit
• c.The color of the required label
• d.The degree of danger within a hazard class (I is greatest, III is least)✓

Packing groups I, II, and III show the relative degree of danger, with Group I representing the greatest hazard and Group III the least. They appear in Roman numerals on the shipping paper. Some classes, such as gases, do not use packing groups.

Who must certify that a hazmat shipment is properly prepared for transport?

• a.The driver
• b.The state inspector
• c.The shipper✓
• d.The receiving customer

The shipper signs a certification on the shipping paper stating that the materials are properly classified, described, packaged, marked, and labeled according to the regulations. This is legally required for most hazmat shipments. The driver relies on this certification but must still refuse obviously unsafe shipments.

Which hazard class covers flammable and combustible liquids?

• a.Class 6
• b.Class 9
• c.Class 3✓
• d.Class 4

Class 3 covers flammable and combustible liquids such as gasoline and diesel. Class 4 covers flammable solids, Class 6 covers poisons and infectious substances, and Class 9 covers miscellaneous materials. Flammable liquids give off vapors that can ignite easily.

What must a driver do with hazardous materials shipping papers when leaving the truck?

• a.Take them home each night
• b.Lock them in the glove box out of view
• c.Give them to any bystander
• d.Leave them in the driver's door pouch or on the driver's seat✓

When the driver is not in the vehicle, the shipping papers must be left in the driver's door pouch or in clear view on the driver's seat. This ensures emergency responders can find the papers quickly if something happens while the driver is away. Papers must always be easy to locate.

What does a hazardous material label on a package tell you?

• a.The delivery date
• b.The name of the truck driver
• c.The exact weight of the package
• d.The hazard class of the material inside✓

A hazardous materials label is a diamond-shaped marking placed on a package to warn of the hazard class of the contents. Labels communicate risk at the package level, while placards communicate at the vehicle level. Correct labels are the shipper's responsibility.

Why must the driver understand the different lists (Table, hazardous substances, marine pollutants) in the regulations?

• a.To decide the delivery price
• b.To choose the truck's paint color
• c.To calculate fuel taxes
• d.To correctly identify a material and determine the shipping, marking, and placarding rules✓

The regulations include several lists that a shipper and driver use together to identify a material and apply the correct requirements. These include the Hazardous Materials Table, the list of hazardous substances and reportable quantities, and the list of marine pollutants. Using them correctly ensures the shipment is handled safely and legally.

Why should you never smoke while loading or unloading hazardous materials?

• a.A spark or flame could ignite flammable materials or vapors✓
• b.It violates the driver's logbook rules
• c.Smoking stains the packages
• d.It slows down the loading process

Smoking near hazardous materials, especially flammable liquids, gases, explosives, and oxidizers, can ignite vapors and cause a fire or explosion. Keep all ignition sources at least 25 feet away when handling these materials. No smoking signs should be posted at loading areas.

What must you do with the engine before loading or unloading most hazardous materials?

• a.Turn off the engine unless it is needed to operate a pump✓
• b.Disconnect the battery
• c.Rev it to keep it warm
• d.Leave it idling at all times

You should turn off the engine before loading or unloading hazardous materials unless the engine is needed to run a pump for a cargo tank. A running engine is an ignition source and safety risk. Set the parking brake and chock the wheels while working.

When loading hazardous materials, how should containers be secured?

• a.Braced so they cannot fall, slide, or be damaged during transport✓
• b.Placed only on the truck roof
• c.Left unsecured for quick unloading
• d.Stacked loosely so they can shift

All hazardous materials packages must be secured against movement so they cannot fall, slide, or be crushed during transport. Use bracing, blocking, and load bars as needed. Damaged packaging can release the material and create a serious hazard.

What tool must never be used near packages of Class 1 explosives?

• a.A cargo net
• b.A pallet jack
• c.A load strap
• d.Any tool that could damage the package or create a spark, such as a hook✓

You must not use hooks or other tools that might damage explosive packaging or create sparks. Explosives (Class 1) require extra care in handling. Use flat surfaces and avoid dropping, dragging, or rolling the containers.

What does the term 'do not load together' refer to in hazmat transport?

• a.A limit on the total truck weight
• b.The segregation and separation rules that keep incompatible materials apart✓
• c.A rule about parking distance
• d.A ban on night driving

Certain hazardous materials react dangerously if they mix, so the regulations include a segregation table showing which materials must not be loaded or stored together. For example, oxidizers must be kept apart from flammable liquids. Following segregation rules prevents dangerous reactions.

How far from the cargo must certain materials like cyanides be kept from acids?

• a.Distance does not matter
• b.Only one foot apart
• c.They must be separated so they cannot mix even if there is a leak✓
• d.They may be loaded together

Cyanides and cyanide mixtures must never be loaded with acids because contact can produce deadly gas. The segregation rules require they be kept apart so a leak from one cannot reach the other. This is a critical safety separation.

What must you check before loading a package of hazardous material?

• a.The driver's meal schedule
• b.That the package is not leaking or damaged✓
• c.The color of the truck
• d.The manufacturer's stock price

Before loading, inspect each package to make sure it is intact and not leaking. Never transport a leaking hazmat package. A damaged or leaking container must be refused or handled according to emergency procedures.

When must a driver keep an eye on (attend) a placarded vehicle carrying explosives?

• a.Only during rainstorms
• b.Never
• c.At all times, either by the driver or a qualified person, except when parked in a safe haven✓
• d.Only when the fuel tank is full

A vehicle carrying Division 1.1, 1.2, or 1.3 explosives must be attended at all times except when parked in a safe haven. The person attending must be awake, within 100 feet, and able to move the vehicle. This reduces the risk of theft or tampering with explosives.

What is a 'safe haven' for parking a hazmat vehicle?

• a.A rest stop with a restaurant
• b.Any residential street
• c.A shopping mall parking lot
• d.An approved place for parking loaded explosive vehicles✓

A safe haven is a government-approved location for parking vehicles loaded with certain explosives. It reduces the danger to the public and property. Drivers should know where safe havens are located along their routes.

What should you do with cargo heaters when transporting certain flammable hazardous materials?

• a.Add extra fuel to the heater
• b.Remove the truck's exhaust system
• c.Turn them to maximum heat
• d.Follow the rules that may require the heater to be shut off during transport✓

There are special rules for cargo heaters when hauling flammable liquids, flammable gases, and explosives, and in many cases the heater must be turned off. A heater is an ignition source that could ignite flammable cargo or vapors. Always check the rules for the specific material you carry.

Where should you avoid parking a vehicle loaded with hazardous materials?

• a.Only on interstate highways
• b.Within 5 feet of the traveled part of a road, or near open fires, bridges, and tunnels when avoidable✓
• c.Only in rural areas
• d.Anywhere with a paved surface

You must not park a placarded vehicle within 5 feet of the traveled portion of a road except for brief operational needs. You should also avoid parking near open fire, bridges, tunnels, and buildings where a leak could endanger many people. Choose the safest possible location when a stop is unavoidable.

How should you handle packages marked with orientation arrows (this end up)?

• a.Lay them flat on their sides
• b.Stack them any way that saves space
• c.Turn them upside down
• d.Load and keep them in the direction the arrows point (upright)✓

Packages with orientation arrows contain liquids or materials that must stay upright to prevent leaks or venting problems. Load them so the arrows point up and keep them that way during transport. Ignoring the arrows can cause a spill.

When loading a cargo tank with flammable liquids, why is bonding and grounding important?

• a.To speed up the pumping
• b.To keep the liquid warm
• c.To prevent static electricity from causing a spark and igniting vapors✓
• d.To reduce the weight of the load

Flowing liquid can build up a static electric charge that could spark and ignite flammable vapors. Bonding and grounding connect the tank and the loading equipment so the charge drains away safely. This is essential when loading or unloading flammable liquids.

What must you do before loading or unloading a cargo tank of flammable liquid?

• a.Leave the vehicle unattended
• b.Disconnect the trailer
• c.Fill the tank completely first
• d.Set the parking brake, chock the wheels, and stay within 25 feet of the tank✓

Before transferring flammable liquid, set the brakes and chock the wheels so the vehicle cannot move. The person doing the loading or unloading must control the process and stay within 25 feet, never leaving it unattended. Constant attendance allows a quick response to any problem.

How should packages of Class 7 radioactive materials be considered when loading?

• a.Delivery time only
• b.Their transport index, which limits how they are grouped and separated from people✓
• c.Weight only
• d.Color only

Radioactive packages have a transport index indicating their radiation level, and the total index in a vehicle is limited. They must be kept separated from people and from undeveloped film. Following these separation rules limits radiation exposure.

What should you do if you discover a leaking hazardous materials package during loading?

• a.Load it quickly before it leaks more
• b.Pour water on it and continue loading
• c.Do not load or transport it; keep it away from people and follow emergency procedures✓
• d.Cover it with a blanket and drive fast

A leaking package must never be loaded or transported. Keep people away, avoid contact with the material, and follow the shipper's and emergency response information. Contact the shipper and appropriate authorities as required.

Why must flammable liquids and oxidizers be kept apart during loading?

• a.They belong to the same hazard class
• b.They have the same placard
• c.They are heavy together
• d.Oxidizers can greatly intensify a fire if flammable liquids ignite✓

Oxidizers supply oxygen that can make a fire burn much hotter and faster. If they mix with flammable liquids and ignite, the result can be a violent fire. The segregation table requires keeping these materials separated.

What is the rule for transporting hazardous materials in the same vehicle as food or feed?

• a.It is always allowed with no conditions
• b.Poisons and certain materials must not be loaded with food or animal feed✓
• c.Only frozen food is affected
• d.Food must be loaded on top

Materials labeled as poison or poison inhalation hazard must not be loaded in the same vehicle with food, feed, or edible items meant for humans or animals. Contamination could poison the food supply. This is a strict segregation rule.

What must be done to a placarded vehicle's cargo before a driver takes it on the road?

• a.Make sure the load is properly blocked, braced, and secured so it will not shift✓
• b.Only wash the exterior
• c.Nothing, the shipper handles everything
• d.Only weigh the truck

The driver is responsible for ensuring hazardous cargo is secured so it cannot move, fall, or become damaged in transit. Shifting loads can rupture containers and cause spills. Recheck the load securement during the trip.

Why should hazmat drivers avoid using an ignition source near the cargo area during a stop?

• a.It drains the battery
• b.It is only a paperwork issue
• c.Flammable vapors could ignite and cause a fire or explosion✓
• d.It scares other drivers

Flammable vapors can accumulate around leaking or venting hazmat containers, and any spark or flame could ignite them. Keep matches, lighters, and other ignition sources away from the cargo. This is a basic fire-prevention practice.

When loading containers of corrosives, what should you avoid?

• a.Securing them with straps
• b.Stacking them where a leak could drip onto and damage other packages or the driver✓
• c.Checking them for damage
• d.Placing them upright

Corrosives can eat through packaging and other materials, so avoid stacking them where a leak could drip onto other cargo or come into contact with the driver. Load them so any leak stays contained. Inspect corrosive containers carefully before loading.

What is required when a driver must be present during the loading and unloading of certain hazmat cargo tanks?

• a.No attendance is ever required
• b.The driver may sleep in the cab
• c.The driver or qualified person must attend and control the process the entire time✓
• d.The driver can leave once the pump starts

For flammable and certain other hazardous cargo tank transfers, a qualified person must attend the operation from start to finish. Attending means being alert, within 25 feet, with a clear view, and able to stop the flow quickly. Constant attendance prevents overfills and spills.

What is the purpose of placards on a vehicle carrying hazardous materials?

• a.To indicate the delivery route
• b.To warn others of the hazard class of the cargo✓
• c.To advertise the trucking company
• d.To show the truck's weight rating

Placards are diamond-shaped signs that communicate the hazard class of the materials being transported. They alert other drivers, the public, and emergency responders to the danger. Placards must be visible on all four sides of the vehicle.

On how many sides of a vehicle must placards be displayed?

• a.Only the rear
• b.Only the two sides
• c.Only the front
• d.All four sides (front, rear, and both sides)✓

Hazardous materials placards must be placed on the front, rear, and both sides of the vehicle. This ensures the hazard is visible from any direction. Missing placards on any side is a violation and a safety risk.

What shape is a hazardous materials placard?

• a.A circle
• b.A triangle
• c.A rectangle
• d.A square turned on its point (diamond)✓

Placards are square-shaped signs displayed on a point so they appear as a diamond. This standardized shape makes hazmat placards instantly recognizable. The color and number on the placard indicate the specific hazard.

How must placards be positioned on a vehicle?

• a.Lying flat on the hood
• b.Upside down
• c.Hidden behind the mud flaps
• d.So they are readable, with words or numbers level and reading from left to right✓

Placards must be turned so the diamond points up and down and the numbers and words read correctly from left to right. They must be clean, not damaged, and clearly visible. Placards must be at least 3 inches away from other markings that could confuse responders.

What does the number in the bottom corner of a placard represent?

• a.The truck's license plate number
• b.The delivery zip code
• c.The hazard class or division number✓
• d.The number of packages

The number at the bottom of a placard identifies the hazard class or division of the material, such as 3 for flammable liquid or 8 for corrosive. This helps responders quickly understand the hazard. The class number works with the color and symbol on the placard.

When must a four-digit identification number be displayed on or near a placard?

• a.When required for certain bulk packagings and cargo tanks✓
• b.Only for non-hazardous cargo
• c.Only at night
• d.Never

Certain shipments, especially bulk packagings and cargo tanks, must display the material's four-digit ID number on the placard or on an orange panel next to it. This number lets responders identify the exact material. It corresponds to the ID number on the shipping paper.

There are two placard tables. What is the key difference between Table 1 and Table 2 materials?

• a.There is no difference
• b.Table 1 materials must be placarded for any amount, while Table 2 materials require placards only at 1,001 pounds or more combined✓
• c.Table 2 is for gases only
• d.Table 1 is for liquids only

Table 1 lists the most dangerous materials, which must be placarded no matter how small the amount. Table 2 materials require placards only when the total weight of all Table 2 hazmat in the vehicle is 1,001 pounds or more. Knowing which table a material falls under determines when placards are needed.

At what total weight of Table 2 hazardous materials must a vehicle be placarded?

• a.1,001 pounds or more✓
• b.Any amount
• c.500 pounds
• d.750 pounds

A vehicle must display placards when it carries 1,001 pounds or more (combined gross weight) of Table 2 hazardous materials. Below that threshold, placards are generally not required for Table 2 materials. Table 1 materials always require placards regardless of weight.

Who is responsible for supplying the placards to the driver?

• a.The insurance company
• b.The consignee
• c.The shipper generally provides placards, but the driver must apply them correctly✓
• d.Only the state DMV

The shipper usually provides the placards, but it is the carrier's and driver's responsibility to make sure the correct placards are properly displayed. The driver should verify that placards match the cargo. Never move a placardable load without the required placards in place.

What placard is used when a vehicle carries 1,001 pounds or more of mixed Table 2 hazardous materials of different classes?

• a.A wrong-way placard
• b.The DANGEROUS placard✓
• c.A blank white placard
• d.No placard is needed

When two or more Table 2 materials of different classes are carried and total 1,001 pounds or more, the driver may use the DANGEROUS placard instead of separate placards for each class. However, if 2,205 pounds or more of one class is loaded at one place, that class must have its own placard. This simplifies placarding for mixed loads.

What must you do if a required placard is lost or damaged during a trip?

• a.Remove all placards
• b.Cover the spot with tape
• c.Continue driving and ignore it
• d.Replace it as soon as safely possible so the vehicle stays properly placarded✓

Placards must remain in place and legible throughout the trip. If one is lost, damaged, or dirty, replace or clean it as soon as it is safe to do so. Driving with missing or unreadable placards is a violation and hides the hazard from responders.

How close can a placard be to other signs or markings on the vehicle?

• a.Placards must touch the license plate
• b.Placards can overlap other signs
• c.Placards must be at least 3 inches away from other markings that could reduce their effectiveness✓
• d.Placards should be hidden by other decals

Placards must be clearly visible and not crowded by advertising, other signs, or markings. They must be kept at least 3 inches away from anything that could reduce their visibility. Clear placards let responders identify hazards quickly.

What color is the flammable liquid (Class 3) placard?

• a.Yellow with an oxidizer symbol
• b.Red with a flame symbol✓
• c.Blue with a water symbol
• d.Green with a gas symbol

The Class 3 flammable liquid placard is red with a white flame symbol and the number 3 at the bottom. Colors and symbols on placards are standardized to communicate the hazard at a glance. Red generally indicates a flammable hazard.

When must a placarded vehicle keep placards displayed?

• a.From the time it is loaded until it is unloaded and cleaned or purged✓
• b.Only when fully loaded
• c.Only on highways
• d.Only during business hours

Placards must stay on the vehicle from loading until the hazardous material is unloaded and the container is cleaned, purged, or reloaded with non-hazardous material. An empty but uncleaned tank may still require placards. Remove placards only when they no longer apply.

Why must a driver check that placards match the shipping papers?

• a.To calculate tolls
• b.To decide the fuel type
• c.To make sure the correct hazard is communicated and the load is legal to move✓
• d.To choose a parking spot

The placards on the vehicle must correspond to the hazardous materials listed on the shipping papers. Mismatched or missing placards mislead responders and violate the regulations. Verifying this match is part of the driver's pre-trip responsibility.

What is required for a placard's durability and appearance?

• a.It can be any random color
• b.It can be handwritten in pencil
• c.It may be faded and torn
• d.It must be durable, weather-resistant, and maintain its color and readability throughout transport✓

Placards must be made to withstand weather and remain legible for the entire trip. Faded, torn, or dirty placards must be replaced. Durable, clear placards ensure the hazard is always communicated.

If a shipment does not require placards, may the driver still need a hazmat endorsement?

• a.Only on weekends
• b.Yes, always
• c.Only for empty trucks
• d.No, the hazmat endorsement is generally required only for placardable amounts✓

The hazmat endorsement is generally required when transporting quantities of hazardous materials that require placarding. Smaller shipments below placarding thresholds may not require the endorsement, though other rules still apply. Always confirm the requirements for the specific load.

What does a placard with the word 'OXYGEN' or an oxidizer symbol warn responders about?

• a.The material is a corrosive acid
• b.The material is flammable liquid
• c.The material can intensify a fire by supplying oxygen✓
• d.The material is radioactive

Oxidizers and oxygen placards warn that the material can supply oxygen and make fires burn hotter and faster. Responders must keep these materials away from fuels and flames. Recognizing the placard helps them plan a safe response.

What is the first thing a driver should do at the scene of a hazmat leak or spill?

• a.Drive away immediately and say nothing
• b.Protect yourself and others by keeping people away and staying upwind✓
• c.Wash the material into a storm drain
• d.Try to taste the material to identify it

Your first priority is safety: keep people away from the area, stay upwind and uphill, and avoid contact with the material. Do not attempt cleanup you are not trained or equipped for. Then notify emergency responders and provide shipping paper information.

What information should you give emergency responders during a hazmat incident?

• a.The material's identity from the shipping papers and the nature of the emergency✓
• b.The truck's paint color
• c.Your favorite route
• d.The delivery price

Responders need to know what material is involved, its ID number, the amount, and what has happened. This information comes from your shipping papers and emergency response information. Accurate details let responders choose the correct protective actions.

If your placarded vehicle is involved in a fire, what should you generally do first?

• a.Get the vehicle to a safe place, keep people away, and call for help✓
• b.Pour water on any burning cargo
• c.Open the cargo doors to check the load
• d.Continue driving to the destination

If safe, move the vehicle away from buildings and people, then keep everyone back and call the fire department. Tell them what hazardous materials are involved so they can respond correctly. Do not fight a hazmat fire unless you are trained and it is safe to do so.

When should you use your fire extinguisher on a hazmat fire?

• a.Only after the fire spreads to the cargo
• b.Never under any condition
• c.Always, no matter the size
• d.Only on small fires you can safely control, such as a tire or engine fire before it reaches the cargo✓

A driver's extinguisher is meant for small fires, like a tire or engine fire, caught early before they reach the hazardous cargo. Once flammable or reactive cargo is involved, the fire is too dangerous to fight without proper equipment. In that case, keep back and wait for trained responders.

What should you do if hazardous material is leaking from your vehicle?

• a.Speed up to reach the delivery point
• b.Keep driving to spread it out
• c.Do not move the vehicle any more than safety requires, and never continue to the destination to 'get help'✓
• d.Cover it and ignore it

Never move a leaking hazmat vehicle except to protect people at the immediate scene. Continuing to drive spreads contamination and increases danger. Park safely, keep people away, and get qualified help to the scene.

Who must be notified when there is a spill of a reportable quantity of a hazardous substance?

• a.Only the truck's owner
• b.The National Response Center and appropriate authorities✓
• c.Only the next customer
• d.No one, if the driver cleans it up

A release of a reportable quantity must be reported to the National Response Center as well as local emergency authorities. Prompt reporting allows a proper cleanup and protects public health. The carrier is responsible for making required notifications.

Why should you stay upwind of a hazardous materials leak?

• a.To keep the papers dry
• b.To see the truck better
• c.To stay close to traffic
• d.To avoid breathing toxic fumes or vapors carried by the wind✓

Wind carries toxic gases, vapors, and smoke away from the leak, so standing upwind reduces your exposure. Staying uphill also helps because many hazardous liquids and heavy gases flow or settle downhill. Positioning yourself safely is essential before doing anything else.

What is the purpose of a hazmat security plan for carriers?

• a.To reduce security risks such as theft or misuse of hazardous materials in transit✓
• b.To choose truck colors
• c.To raise shipping prices
• d.To schedule deliveries faster

Carriers of certain hazardous materials must have a security plan addressing personnel, unauthorized access, and en route security. The plan helps prevent hazmat from being stolen or used to cause harm. Drivers should be trained on their role in the plan.

What should a driver do to reduce the risk of hazmat theft or tampering during stops?

• a.Stay alert, avoid predictable routines, and keep the vehicle attended or secured✓
• b.Post the cargo contents on social media
• c.Park in dark, isolated areas overnight
• d.Leave the keys in the ignition

En route security includes staying watchful, varying stops, keeping the vehicle locked and attended when required, and not advertising the cargo. These steps make it harder for someone to steal or tamper with hazardous materials. Report anything suspicious to authorities.

If you are not trained or equipped to control a hazmat leak, what should you do?

• a.Contain the scene by warning others and keeping them away, then wait for trained responders✓
• b.Bury the material
• c.Drive the load home
• d.Attempt the cleanup anyway

Drivers should not attempt cleanup beyond their training and equipment. Instead, warn others, keep people at a safe distance, and let trained hazmat responders handle the material. Providing shipping paper information speeds their response.

What role do warning devices like reflective triangles play in a hazmat emergency?

• a.They repair the leak
• b.They call the fire department automatically
• c.They identify the material
• d.They warn approaching traffic so vehicles do not drive into the danger zone✓

Placing reflective triangles or other warning devices alerts oncoming traffic to stop or slow down before reaching a stopped or leaking hazmat vehicle. This prevents collisions that could worsen the emergency. Set them out as soon as it is safe.

What should you do with the shipping papers if you are injured or must leave the scene of a hazmat crash?

• a.Take them with you and hide them
• b.Destroy them
• c.Leave them where responders can find them, such as on the driver's seat or in the door pouch✓
• d.Mail them to the office

Emergency responders rely on the shipping papers to identify the hazard and respond safely. If you cannot stay, the papers should be left in the door pouch or on the driver's seat where responders will look. This is why papers are always kept in those locations.

Why is it dangerous to smoke or create sparks near a flammable liquid spill?

• a.It only wastes cigarettes
• b.Vapors from the spill can ignite explosively✓
• c.It has no effect outdoors
• d.It makes the papers smell

Flammable liquid spills give off vapors that can travel and ignite from a spark, flame, or hot surface, causing a fire or explosion. Eliminate all ignition sources and keep people back. Never smoke near a spill or leak.

What is the safest action if you smell or see gas leaking from a cargo tank?

• a.Open all valves to release pressure
• b.Light a flare to see better
• c.Move away from the vehicle to a safe distance and keep others back, then call for help✓
• d.Climb on top of the tank to inspect

Leaking gas can be toxic, flammable, or both, so put distance between yourself and the tank and keep others away. Do not create any ignition source. Notify emergency responders and provide the material's information from the shipping papers.

What must a carrier provide to drivers who handle security-sensitive hazardous materials?

• a.A company vehicle
• b.Security awareness training and instruction on the security plan✓
• c.Extra vacation days
• d.A cash bonus

Drivers transporting certain hazardous materials must receive security awareness training and be trained on the company's security plan. This training covers recognizing and responding to security threats. It is required in addition to general hazmat training.

After a hazmat emergency, why is it important to follow the Emergency Response Guidebook's initial isolation and protective action distances?

• a.To calculate the load weight
• b.To decide the delivery time
• c.To choose the truck route home
• d.To keep people a safe distance from the release and any downwind hazard✓

The Emergency Response Guidebook gives isolation and protective action distances so responders can clear the immediate area and evacuate or shelter people downwind. Following these distances protects the public from toxic or flammable releases. Providing the material's ID number lets responders find the correct guidance quickly.