What must you do before you load or unload hazardous materials?

Set the parking brake so the vehicle cannot move

Remove the placards from the vehicle

Turn on the four-way flashers only

A shipper offers you a package that is leaking. What should you do?

Load it at the rear of the trailer

Wrap it in plastic and carry it

What kind of floor liner is required for Division 1.1, 1.2, or 1.3 explosives?

Non-metallic material or non-ferrous metal

Any metal that is clean and dry

How should hazardous materials containers be secured?

Braced so they cannot fall, slide, or bounce around

Left loose so they can be reached quickly

May you transfer hazardous materials from one package to another while in transit?

Yes, if the first package is damaged

Which of these may not be carried as an overhang or tailgate load?

Division 2.2 (Non-flammable Gas)

When may Class 1, 4, or 5 materials be carried outside a closed cargo space?

When all packages are fire and water resistant or under a fire and water resistant tarp

When the trip is shorter than 50 miles

When the load is tied with chains

Before loading explosives, what must you do with the cargo heaters?

Disable them, disconnect power, and drain their fuel tanks

How must explosive packages be handled?

Never drop, throw, or roll them, and never use metal tools

Roll them gently on their sides

Use hooks to lift them carefully

When may you transfer Division 1.1, 1.2, or 1.3 explosives between vehicles on a public road?

When the trip is under 100 miles

During an emergency transfer of explosives on the road, what must you set out?

Red warning reflectors, flags, or electric lanterns

Burning flares around the vehicles

When may you not haul Division 1.1 or 1.2 explosives in a vehicle combination?

When the combination has a marked or placarded cargo tank

When the combination has a sleeper berth

When the trailer is longer than 40 feet

How must Class 4 and Class 5 materials be carried?

Completely enclosed in a vehicle or covered securely

On an open flatbed with no cover

As a tailgate load for quick unloading

Class 4 and 5 materials that become dangerous when wet must be kept dry when?

In transit and during loading and unloading

Materials subject to spontaneous combustion or heating need what kind of vehicle?

One with sufficient ventilation

One with a sealed, airtight body

How should breakable containers of corrosive liquid be loaded by hand?

Several at a time, on their sides

When may carboys of corrosive liquid be stacked?

Only if the lower tiers can safely bear the weight of the upper tiers

How must charged storage batteries be loaded?

Right side up so their liquid will not spill

Stacked with terminals touching

Corrosive liquids must never be loaded next to or above which material?

Division 4.3 (Dangerous When Wet)

Division 2.2 (Non-flammable Gas)

Corrosive liquids must never be loaded with which material?

Division 4.2 (Spontaneously Combustible Materials)

Division 2.2 (Non-flammable Gas)

When may a compressed gas cylinder be loaded lying down?

When it is designed so the relief valve is in the vapor space

Division 2.3 or Division 6.1 materials must never be carried in what kind of containers?

Containers with interconnections

Where may a package labeled POISON never be loaded?

In the driver’s cab or sleeper

When may a poison package be loaded with animal or human food?

When it is overpacked in an approved way

When it is placed on top of the food

Cyanides or cyanide mixtures must not be loaded with which materials?

Acids or materials that could release hydrocyanic acid

Class 9 (Miscellaneous) materials

Detonating primers may not be loaded with which materials?

Other explosives, unless in authorized containers or packages

When is product loaded into or unloaded from a portable tank?

While the tank is off the vehicle

While the tank is on the vehicle

Where is the identification number shown on bulk packaging when no placards are required?

On a white, diamond-shaped background

The identification numbers on a portable tank cannot be seen once it is on the truck. What must you do?

Display the number on both sides and ends of the motor vehicle

Write the number on the shipping paper only

Loading, bulk and driving with hazmat

Practice this topic86 questions

Questions and answers

Which tool must you not use when loading hazardous materials containers?

Hooks

Avoid any tool that might damage containers or packaging, and never use hooks.
Section 9 · 9.4 – Loading and Unloading ↗PDF, 41 MB
What must you do before you load or unload hazardous materials?

Set the parking brake so the vehicle cannot move

Set the parking brake first and make sure the vehicle will not move.
Section 9 · 9.4.1 – General Loading Requirements ↗PDF, 41 MB
A shipper offers you a package that is leaking. What should you do?

Refuse to transport it

Leaking packages are not transported. You, your truck, and others could be in danger.
Section 9 · 9.4.1 – General Loading Requirements ↗PDF, 41 MB
Is it legal to move a vehicle with leaking hazardous materials?

No, it is illegal

Moving a vehicle that is leaking hazardous materials is against the law.
Section 9 · 9.4.1 – General Loading Requirements ↗PDF, 41 MB
Which of these is on the list of hazard classes you must never smoke around when loading?

Class 2.1 (Flammable Gas)

Never smoke around Class 1, Division 2.1, Class 3, Class 4, or Class 5 materials, and do not let others smoke nearby.
Section 9 · 9.4.1 – General Loading Requirements ↗PDF, 41 MB
What kind of floor liner is required for Division 1.1, 1.2, or 1.3 explosives?

Non-metallic material or non-ferrous metal

The floor must be tight and the liner non-metallic or a metal with no iron in it.
Section 9 · 9.4.1 – General Loading Requirements ↗PDF, 41 MB
How should hazardous materials containers be secured?

Braced so they cannot fall, slide, or bounce around

Brace containers against falling, sliding, or bouncing, and take extra care with containers that have valves or fittings.
Section 9 · 9.4.1 – General Loading Requirements ↗PDF, 41 MB
May you transfer hazardous materials from one package to another while in transit?

No, never

Hazardous materials are never transferred between packages in transit.
Section 9 · 9.4.1 – General Loading Requirements ↗PDF, 41 MB
Which hazardous materials packaging may you empty while it is on the vehicle?

A cargo tank

You may empty a cargo tank, but no other package may be emptied on the vehicle.
Section 9 · 9.4.1 – General Loading Requirements ↗PDF, 41 MB
Which material is usually forbidden in a cargo space that has a cargo heater?

Class 3 (Flammable Liquids)

The cargo heater rules cover Class 1, Division 2.1, and Class 3. The rules usually forbid cargo heaters for them.
Section 9 · 9.4.1 – General Loading Requirements ↗PDF, 41 MB
Which of these may not be carried as an overhang or tailgate load?

Class 5 (Oxidizers)

Class 1, Class 4, and Class 5 materials must go in a closed cargo space, not as overhang or tailgate loads.
Section 9 · 9.4.1 – General Loading Requirements ↗PDF, 41 MB
When may Class 1, 4, or 5 materials be carried outside a closed cargo space?

When all packages are fire and water resistant or under a fire and water resistant tarp

These materials go in a closed cargo space unless every package is fire and water resistant or covered with such a tarp.
Section 9 · 9.4.1 – General Loading Requirements ↗PDF, 41 MB
What must you do with the engine before loading or unloading explosives?

Turn it off

Turn the engine off before loading or unloading any explosives, then check the cargo space.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
Before loading explosives, what must you do with the cargo heaters?

Disable them, disconnect power, and drain their fuel tanks

Cargo heaters must be disabled, their power sources disconnected, and their fuel tanks drained.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
How must explosive packages be handled?

Never drop, throw, or roll them, and never use metal tools

Use extra care with explosives. No hooks or metal tools, and never drop, throw, or roll packages.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
When may you transfer Division 1.1, 1.2, or 1.3 explosives between vehicles on a public road?

Only in an emergency

Transfers of these explosives on a public roadway are allowed only in an emergency.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
During an emergency transfer of explosives on the road, what must you set out?

Red warning reflectors, flags, or electric lanterns

You must warn others on the road with red reflectors, flags, or electric lanterns.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
A package of explosives shows an oily stain. What should you do?

Do not take it

Never transport damaged explosives, and do not accept a package showing dampness or an oily stain.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
When may you not haul Division 1.1 or 1.2 explosives in a vehicle combination?

When the combination has a marked or placarded cargo tank

Division 1.1 or 1.2 is not hauled in a combination that includes a marked or placarded cargo tank.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
Which Class 7 packages in a combination rule out hauling Division 1.1 or 1.2?

Packages labeled Yellow III

Radioactive packages labeled Yellow III in the combination rule out Division 1.1 or 1.2.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
How must Class 4 and Class 5 materials be carried?

Completely enclosed in a vehicle or covered securely

Class 4 and 5 materials must be fully enclosed or securely covered.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
Class 4 and 5 materials that become dangerous when wet must be kept dry when?

In transit and during loading and unloading

Materials that become unstable when wet must stay dry the whole time, including loading and unloading.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
Materials subject to spontaneous combustion or heating need what kind of vehicle?

One with sufficient ventilation

Materials that can heat or ignite on their own must ride in a vehicle with enough ventilation.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
How should breakable containers of corrosive liquid be loaded by hand?

One by one, right side up

Load them one at a time, keep them upright, and never drop or roll them.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
When may carboys of corrosive liquid be stacked?

Only if the lower tiers can safely bear the weight of the upper tiers

Carboys may be stacked only when the lower tiers can safely carry the upper ones.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
Where may nitric acid be loaded?

Never above any other product

Nitric acid is not loaded above any other product.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
How must charged storage batteries be loaded?

Right side up so their liquid will not spill

Keep batteries upright so the liquid cannot spill, and keep other cargo from falling against or short circuiting them.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
Corrosive liquids must never be loaded next to or above which material?

Division 4.3 (Dangerous When Wet)

Never load corrosive liquids next to or above Division 1.4, 4.1, 4.3, Class 5, or Division 2.3 Zone B.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
Corrosive liquids must never be loaded with which material?

Division 4.2 (Spontaneously Combustible Materials)

Corrosive liquids are never loaded with Division 1.1, 1.2, 1.3, 1.5, Division 2.3 Zone A, Division 4.2, or Division 6.1 PGI Zone A.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
Your vehicle has no racks for compressed gas cylinders. What must the cargo floor be like?

Flat

Without cylinder racks, the cargo space floor must be flat and the cylinders held upright or boxed.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
When may a compressed gas cylinder be loaded lying down?

When it is designed so the relief valve is in the vapor space

A cylinder may be loaded horizontally only if its relief valve sits in the vapor space.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
Division 2.3 or Division 6.1 materials must never be carried in what kind of containers?

Containers with interconnections

Poisonous gases and poisons are never carried in containers that are interconnected.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
Where may a package labeled POISON never be loaded?

In the driver’s cab or sleeper

Poison packages never go in the cab or sleeper, or with food for people or animals.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
What is the most the total transport index of all packages in one vehicle may be?

50

The transport indexes of all packages in a single vehicle must not add up to more than 50.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
How close may you leave a radioactive package with a transport index of 1.1 to people or cargo space walls?

Not within two feet

The handbook example says a package with a transport index of 1.1 may not be within two feet of people or cargo space walls.
Section 9 · Precautions for Specific Hazards ↗PDF, 41 MB
When may a poison package be loaded with animal or human food?

When it is overpacked in an approved way

Poison may share a vehicle with food only if the poison package is overpacked in an approved way.
Section 9 · Do Not Load Table ↗PDF, 41 MB
Which of these counts as a foodstuff under the poison loading rule?

Anything you swallow

Foodstuffs are anything you swallow. Mouthwash, toothpaste, and skin creams are not foodstuffs.
Section 9 · Do Not Load Table ↗PDF, 41 MB
Cyanides or cyanide mixtures must not be loaded with which materials?

Acids or materials that could release hydrocyanic acid

Cyanides are kept away from acids and acidic materials that could release hydrocyanic acid.
Section 9 · Do Not Load Table ↗PDF, 41 MB
Detonating primers may not be loaded with which materials?

Other explosives, unless in authorized containers or packages

Detonating primers are kept from other explosives unless those are in authorized containers or packages.
Section 9 · Do Not Load Table ↗PDF, 41 MB
Which kind of bulk packaging stays on the vehicle while it is loaded and unloaded?

A cargo tank

Cargo tanks are permanently attached and stay on the vehicle while they are loaded and unloaded.
Section 9 · 9.5 – Bulk Packaging Marking, Loading and Unloading ↗PDF, 41 MB
When is product loaded into or unloaded from a portable tank?

While the tank is off the vehicle

Portable tanks are not permanently attached. They are filled or emptied off the vehicle and then put on it.
Section 9 · 9.5 – Bulk Packaging Marking, Loading and Unloading ↗PDF, 41 MB
What is the most common cargo tank for liquids?

MC306

MC306 is the most common cargo tank for liquids, and MC331 for gases.
Section 9 · 9.5 – Bulk Packaging Marking, Loading and Unloading ↗PDF, 41 MB
In which column of the Hazardous Materials Table are identification numbers found?

Column 4

Identification numbers for bulk packaging come from column 4 of the table.
Section 9 · 9.5.1 – Markings ↗PDF, 41 MB
How tall must identification numbers on bulk packaging be?

100 mm (3.9 inches)

The rules require black numbers 100 mm (3.9 inches) tall on orange panels, placards, or a white diamond.
Section 9 · 9.5.1 – Markings ↗PDF, 41 MB
Where is the identification number shown on bulk packaging when no placards are required?

On a white, diamond-shaped background

With no placards required, the number goes on a white diamond-shaped background.
Section 9 · 9.5.1 – Markings ↗PDF, 41 MB
Where must the shipping name of the contents appear on a portable tank?

On two opposing sides

Portable tanks display the shipping name on two opposing sides.
Section 9 · 9.5.1 – Markings ↗PDF, 41 MB
How tall must the shipping name letters be on a portable tank of more than 1,000 gallons?

At least two inches

Tanks over 1,000 gallons need letters at least two inches tall.
Section 9 · 9.5.1 – Markings ↗PDF, 41 MB
How tall must the shipping name letters be on a portable tank of less than 1,000 gallons?

At least one inch

Tanks under 1,000 gallons need letters at least one inch tall.
Section 9 · 9.5.1 – Markings ↗PDF, 41 MB
Where must the identification number appear on a portable tank that holds 1,000 gallons or more?

On each side and each end

Tanks of 1,000 gallons or more show the number on every side and end. Smaller tanks show it on two opposing sides.
Section 9 · 9.5.1 – Markings ↗PDF, 41 MB
Where must the identification number appear on a portable tank holding less than 1,000 gallons?

On two opposing sides

Portable tanks under 1,000 gallons show the number on two opposing sides.
Section 9 · 9.5.1 – Markings ↗PDF, 41 MB
The identification numbers on a portable tank cannot be seen once it is on the truck. What must you do?

Display the number on both sides and ends of the motor vehicle

If the tank markings are not visible on the vehicle, the number must go on both sides and ends of the motor vehicle.
Section 9 · 9.5.1 – Markings ↗PDF, 41 MB
Which markings are intermediate bulk containers (IBCs) not required to have?

The owner’s name or the shipping name

IBCs are bulk packages, but they do not need the owner’s name or shipping name.
Section 9 · 9.5.1 – Markings ↗PDF, 41 MB
How close must the person watching a cargo tank being loaded stay to the tank?

Within 25 feet

The qualified person watching must be alert, have a clear view of the tank, and be within 25 feet.
Section 9 · 9.5.2 – Tank Loading ↗PDF, 41 MB
Your tank has only a small amount of product and you are moving a short distance. Must manholes and valves be closed?

Yes, always before moving

Close all manholes and valves before moving, no matter how little is in the tank or how short the move.
Section 9 · 9.5.2 – Tank Loading ↗PDF, 41 MB
When may a cargo tank be moved with open valves or covers?

Only when it is empty under 49 CFR 173.29

Moving a cargo tank with open valves or covers is illegal unless it is empty by that rule.
Section 9 · 9.5.2 – Tank Loading ↗PDF, 41 MB
When may the engine run while loading or unloading flammable liquids?

Only if it is needed to operate a pump

Turn off the engine for flammable liquids unless it is needed to run a pump.
Section 9 · 9.5.3 – Flammable Liquids ↗PDF, 41 MB
When must a cargo tank be grounded for filling through an open filling hole?

Before opening the filling hole, kept until after it is closed

Ground the tank before the filling hole is opened and keep the ground until after the hole is closed.
Section 9 · 9.5.3 – Flammable Liquids ↗PDF, 41 MB
You use the engine to pump compressed gas into a customer’s tank. When does the engine go off?

After product transfer, before unhooking the hose

Turn the engine off once the transfer is done and before you unhook the hose.
Section 9 · 9.5.4 – Compressed Gas ↗PDF, 41 MB
What must you always do with trailers uncoupled from the power unit?

Chock them to prevent motion

Always chock trailers and semi-trailers when they are uncoupled from the power unit.
Section 9 · 9.5.4 – Compressed Gas ↗PDF, 41 MB
You must stop a truck loaded with Division 1.1 explosives. What is the closest it may be parked to the traveled part of the road?

Never within 5 feet

A vehicle with these explosives is never parked within five feet of the traveled part of the road.
Section 9 · 9.6.1 – Parking with Division 1.1, 1.2, or 1.3 Explosives ↗PDF, 41 MB
Your truck carries Division 1.3 explosives. Apart from short operating stops, what is the closest you may park to a building?

At least 300 feet

Do not park within 300 feet of a bridge, tunnel, building, a place where people gather, or an open fire.
Section 9 · 9.6.1 – Parking with Division 1.1, 1.2, or 1.3 Explosives ↗PDF, 41 MB
When may you park a vehicle loaded with explosives on private property?

Only if the owner is aware of the danger

Do not park on private property unless the owner knows the danger.
Section 9 · 9.6.1 – Parking with Division 1.1, 1.2, or 1.3 Explosives ↗PDF, 41 MB
Where may you let someone else watch your parked vehicle loaded with explosives?

On the shipper’s, carrier’s, or consignee’s property

Someone must always watch it. Another person may do it for you only on those three properties.
Section 9 · 9.6.1 – Parking with Division 1.1, 1.2, or 1.3 Explosives ↗PDF, 41 MB
Where may a vehicle loaded with explosives be left with no one watching it?

In a safe haven approved for such vehicles

A safe haven is an approved place where a vehicle with explosives may be left unattended.
Section 9 · 9.6.1 – Parking with Division 1.1, 1.2, or 1.3 Explosives ↗PDF, 41 MB
Your placarded vehicle has no explosives. When may you park within 5 feet of the traveled part of the road?

Only if your work requires it, and only briefly

A placarded vehicle without explosives may park that close only briefly and only when the work requires it.
Section 9 · 9.6.2 – Parking a Placarded Vehicle Not Transporting Division 1.1, 1.2, or 1.3) Explosives ↗PDF, 41 MB
How far from an open fire must a placarded vehicle without explosives be parked?

At least 300 feet

Even without explosives, do not park a placarded vehicle within 300 feet of an open fire.
Section 9 · 9.6.2 – Parking a Placarded Vehicle Not Transporting Division 1.1, 1.2, or 1.3) Explosives ↗PDF, 41 MB
If the person attending a placarded vehicle is outside it, how close must they be?

Within 100 feet with the vehicle in clear view

The attendant must be in the vehicle and awake, or within 100 feet with the vehicle in clear view.
Section 9 · 9.6.3 – Attending Parked Vehicles ↗PDF, 41 MB
Your placarded vehicle breaks down. Which warning signals should you use?

Reflective triangles or red electric lights

Use reflective triangles or red electric lights, not burning signals.
Section 9 · 9.6.4 – No Flares! ↗PDF, 41 MB
May you use flares around an empty tank used for Class 3 flammable liquids?

No, not whether loaded or empty

Burning signals are never used around a Class 3 or Division 2.1 tank, loaded or empty, or a vehicle with Division 1.1, 1.2, or 1.3.
Section 9 · 9.6.4 – No Flares! ↗PDF, 41 MB
When placarded, what kind of places should you avoid?

Heavily populated areas, crowds, tunnels, narrow streets, and alleys

Take other routes, even inconvenient ones, unless there is no other way.
Section 9 · 9.6.5 – Route Restrictions ↗PDF, 41 MB
When may you drive a placarded vehicle near an open fire?

Only if you can safely pass without stopping

Never drive near open fires unless you can safely pass without stopping.
Section 9 · 9.6.5 – Route Restrictions ↗PDF, 41 MB
What must you have when transporting Division 1.1, 1.2, or 1.3 explosives?

A written route plan that you follow

You must have and follow a written route plan, usually prepared by the carrier.
Section 9 · 9.6.5 – Route Restrictions ↗PDF, 41 MB
How close to a placarded cargo tank used for Class 3 or Division 2.1 may you smoke?

Not within 25 feet

Do not smoke within 25 feet of such a tank.
Section 9 · 9.6.6 – No Smoking ↗PDF, 41 MB
You may not carry a lighted cigarette within 25 feet of a vehicle containing which class?

Class 5 (Oxidizers)

The 25-foot no-smoking rule covers vehicles with Class 1, Class 3, Division 4.1, Division 4.2, or Class 5.
Section 9 · 9.6.6 – No Smoking ↗PDF, 41 MB
What must you do before fueling a vehicle that contains hazardous materials?

Turn off the engine

Turn off the engine before fueling, and someone must always be at the nozzle.
Section 9 · 9.6.7 – Refuel with Engine Off ↗PDF, 41 MB
What is the lowest UL rating allowed for the fire extinguisher on a placarded power unit?

10 B:C or more

The power unit of a placarded vehicle needs a fire extinguisher with a UL rating of 10 B:C or more.
Section 9 · 9.6.8 – 10 B C Fire Extinguisher ↗PDF, 41 MB
When must you examine each tire on a vehicle carrying hazardous materials?

At the beginning of each trip and each time the vehicle is parked

Each tire is examined at the start of each trip and every time the vehicle is parked.
Section 9 · 9.6.9 – Check Tires ↗PDF, 41 MB
How far may you drive with a leaking or flat tire?

Only to the nearest safe place to fix it

Drive on a leaking or flat tire only as far as the nearest safe place to fix it.
Section 9 · 9.6.9 – Check Tires ↗PDF, 41 MB
You find an overheated tire. What must you do before driving on?

Remove it and correct the cause of the overheating

Remove the overheated tire, place it away from the vehicle, and do not drive until the cause is fixed.
Section 9 · 9.6.9 – Check Tires ↗PDF, 41 MB
Where must shipping papers be while you are behind the wheel?

Within reach with your seat belt on, or in the driver’s door pouch

Keep them within reach with your seat belt fastened, or in a pouch on the driver’s door.
Section 9 · 9.6.10 – Where to Keep Shipping Papers and Emergency Response Information ↗PDF, 41 MB
A carrier must give drivers hauling Division 1.1, 1.2, or 1.3 explosives a copy of which regulation?

FMCSR Part 397

Drivers of these explosives get a copy of FMCSR Part 397 and must sign a receipt.
Section 9 · 9.6.10 – Where to Keep Shipping Papers and Emergency Response Information ↗PDF, 41 MB
Which document must a driver hauling Division 1.1, 1.2, or 1.3 explosives have while driving?

The written route plan

You must have the shipping papers, written emergency instructions, the written route plan, and FMCSR Part 397.
Section 9 · 9.6.10 – Where to Keep Shipping Papers and Emergency Response Information ↗PDF, 41 MB
What must a driver hauling chlorine in cargo tanks have in the vehicle?

An approved gas mask and a leak control kit

Chlorine tank drivers need an approved gas mask and a kit for leaks in dome cover plate fittings.
Section 9 · 9.6.11 – Equipment for Chlorine ↗PDF, 41 MB
Your unplacarded truck carries a small amount of chlorine. Must you stop at railroad crossings?

Yes, for any amount of chlorine

Vehicles that are placarded, carry any amount of chlorine, or have hazardous materials cargo tanks must stop.
Section 9 · 9.6.12 – Stop before Railroad Crossings ↗PDF, 41 MB
Must an empty cargo tank used for hazardous materials stop at railroad crossings?

Yes, loaded or empty

Cargo tanks used for hazardous materials must stop whether loaded or empty.
Section 9 · 9.6.12 – Stop before Railroad Crossings ↗PDF, 41 MB
How far from the nearest rail must you stop at a railroad crossing?

15 to 50 feet

Stop between 15 and 50 feet before the nearest rail.
Section 9 · 9.6.12 – Stop before Railroad Crossings ↗PDF, 41 MB

Loading, bulk and driving with hazmat

Questions and answers

Which tool must you not use when loading hazardous materials containers?

What must you do before you load or unload hazardous materials?

A shipper offers you a package that is leaking. What should you do?

Is it legal to move a vehicle with leaking hazardous materials?

Which of these is on the list of hazard classes you must never smoke around when loading?

What kind of floor liner is required for Division 1.1, 1.2, or 1.3 explosives?

How should hazardous materials containers be secured?

May you transfer hazardous materials from one package to another while in transit?

Which hazardous materials packaging may you empty while it is on the vehicle?

Which material is usually forbidden in a cargo space that has a cargo heater?

Which of these may not be carried as an overhang or tailgate load?

When may Class 1, 4, or 5 materials be carried outside a closed cargo space?

What must you do with the engine before loading or unloading explosives?

Before loading explosives, what must you do with the cargo heaters?

How must explosive packages be handled?

When may you transfer Division 1.1, 1.2, or 1.3 explosives between vehicles on a public road?

During an emergency transfer of explosives on the road, what must you set out?

A package of explosives shows an oily stain. What should you do?

When may you not haul Division 1.1 or 1.2 explosives in a vehicle combination?

Which Class 7 packages in a combination rule out hauling Division 1.1 or 1.2?

How must Class 4 and Class 5 materials be carried?

Class 4 and 5 materials that become dangerous when wet must be kept dry when?

Materials subject to spontaneous combustion or heating need what kind of vehicle?

How should breakable containers of corrosive liquid be loaded by hand?

When may carboys of corrosive liquid be stacked?

Where may nitric acid be loaded?

How must charged storage batteries be loaded?

Corrosive liquids must never be loaded next to or above which material?

Corrosive liquids must never be loaded with which material?

Your vehicle has no racks for compressed gas cylinders. What must the cargo floor be like?

When may a compressed gas cylinder be loaded lying down?

Division 2.3 or Division 6.1 materials must never be carried in what kind of containers?

Where may a package labeled POISON never be loaded?

What is the most the total transport index of all packages in one vehicle may be?

How close may you leave a radioactive package with a transport index of 1.1 to people or cargo space walls?

When may a poison package be loaded with animal or human food?

Which of these counts as a foodstuff under the poison loading rule?

Cyanides or cyanide mixtures must not be loaded with which materials?

Detonating primers may not be loaded with which materials?

Which kind of bulk packaging stays on the vehicle while it is loaded and unloaded?

When is product loaded into or unloaded from a portable tank?

What is the most common cargo tank for liquids?

In which column of the Hazardous Materials Table are identification numbers found?

How tall must identification numbers on bulk packaging be?

Where is the identification number shown on bulk packaging when no placards are required?

Where must the shipping name of the contents appear on a portable tank?

How tall must the shipping name letters be on a portable tank of more than 1,000 gallons?

How tall must the shipping name letters be on a portable tank of less than 1,000 gallons?

Where must the identification number appear on a portable tank that holds 1,000 gallons or more?

Where must the identification number appear on a portable tank holding less than 1,000 gallons?

The identification numbers on a portable tank cannot be seen once it is on the truck. What must you do?

Which markings are intermediate bulk containers (IBCs) not required to have?

How close must the person watching a cargo tank being loaded stay to the tank?

Your tank has only a small amount of product and you are moving a short distance. Must manholes and valves be closed?

When may a cargo tank be moved with open valves or covers?

When may the engine run while loading or unloading flammable liquids?

When must a cargo tank be grounded for filling through an open filling hole?

You use the engine to pump compressed gas into a customer’s tank. When does the engine go off?

What must you always do with trailers uncoupled from the power unit?

You must stop a truck loaded with Division 1.1 explosives. What is the closest it may be parked to the traveled part of the road?

Your truck carries Division 1.3 explosives. Apart from short operating stops, what is the closest you may park to a building?

When may you park a vehicle loaded with explosives on private property?

Where may you let someone else watch your parked vehicle loaded with explosives?

Where may a vehicle loaded with explosives be left with no one watching it?

Your placarded vehicle has no explosives. When may you park within 5 feet of the traveled part of the road?

How far from an open fire must a placarded vehicle without explosives be parked?

If the person attending a placarded vehicle is outside it, how close must they be?

Your placarded vehicle breaks down. Which warning signals should you use?

May you use flares around an empty tank used for Class 3 flammable liquids?

When placarded, what kind of places should you avoid?

When may you drive a placarded vehicle near an open fire?

What must you have when transporting Division 1.1, 1.2, or 1.3 explosives?

How close to a placarded cargo tank used for Class 3 or Division 2.1 may you smoke?

You may not carry a lighted cigarette within 25 feet of a vehicle containing which class?

What must you do before fueling a vehicle that contains hazardous materials?

What is the lowest UL rating allowed for the fire extinguisher on a placarded power unit?

When must you examine each tire on a vehicle carrying hazardous materials?

How far may you drive with a leaking or flat tire?