Idaho CDL — General Knowledge: Road Signs Practice Test

Question 1

Apart from the certain bulk packages that may be placarded on two opposite sides or carry labels, where must a bulk package be placarded?

Accepted Answer

On all four sides — A few bulk packages are allowed placards on just two opposite sides, or labels. Every other bulk package needs a placard on each of its four sides.

Answer

On the top only

Answer

On the side facing traffic only

Answer

On the front and rear only

Question 2

A shipper has put the letters 'RQ' on a package and on its shipping paper. What does that tell you?

Accepted Answer

The package holds a reportable quantity of a hazardous substance — RQ stands for reportable quantity. When a listed hazardous substance travels in one package at or above its reportable quantity, the shipper shows RQ on the paper and the package, and a spill of that amount must be reported.

Answer

The freight is perishable and must be returned quickly

Answer

The package may travel by rail only

Answer

The package has been re-qualified after a repair

Question 3

Which of these loads must be placarded no matter how small the amount, because it falls under Placard Table 1?

Accepted Answer

Radioactive packages bearing the Yellow III label — Table 1 materials need placards in any amount, and Class 7 packages with the Radioactive Yellow III label are on that table. Flammable liquids, corrosives and flammable gases are Table 2 materials, placarded at 1,001 pounds or more unless in bulk packaging.

Answer

Class 8 corrosives in cartons

Answer

Division 2.1 flammable gas in cylinders

Answer

Class 3 flammable liquids in drums

Question 4

Besides the shipping name of its contents, what must a portable tank display?

Accepted Answer

The name of its lessee or owner — Portable tanks must show the name of the lessee or owner, and the contents' shipping name on two opposing sides. Intermediate bulk containers are not required to carry either one.

Answer

The carrier's insurance policy number

Answer

The driver's CDL number

Answer

The shipper's emergency telephone number

Question 5

Some hazardous materials identification numbers start with 'NA' rather than 'UN.' What does the manual say about 'NA' numbers?

Accepted Answer

They belong to shipping names used just for U.S. domestic shipments and shipments to or from Canada — Identification numbers carry either a UN or an NA prefix. The NA prefix is tied to shipping names that are used just inside the United States and on shipments going to or coming from Canada.

Answer

They mean no placard applies

Answer

They mark materials that are not hazardous

Answer

They are used only for sea shipments

Question 6

The manual pictures a highway sign addressed to truckers about runaway truck ramps. What does the sign tell them?

Accepted Answer

There is no fine for using a runaway truck ramp — The pictured sign tells truckers they will not be fined for using a runaway truck ramp, and the mountain driving text agrees that using an escape ramp brings neither a fine nor a penalty.

Answer

Ramps are reserved for vehicles over 80,000 pounds

Answer

A permit is required before using a ramp

Answer

Ramps close during winter months

Question 7

At one dock you load 2,500 pounds of a Table 2 flammable liquid. At another stop you add 600 pounds of a Table 2 corrosive. Can DANGEROUS placards cover the entire load?

Accepted Answer

No; the flammable liquid needs its own specific placard because 2,205 pounds or more of it was loaded at one place — DANGEROUS placards are an option for mixed Table 2 loads of 1,001 pounds or more, but not for a Table 2 class when 2,205 pounds or more of it went aboard at a single location. That material must show its specific placard.

Answer

Yes, but only on the rear of the trailer

Answer

No; DANGEROUS placards may never be used when flammable liquids are aboard

Answer

Yes; any mix of Table 2 classes totaling 1,001 pounds or more may use them

Question 8

Why does the manual say hazmat placards must be kept clean and undamaged?

Accepted Answer

So their color, format and message can be easily seen — A placard only works as a warning if people can read it, so it has to stay clean and intact enough for its color, layout and wording to be made out easily.

Answer

So they can be resold to the shipper

Answer

So they don't add to the vehicle's weight

Answer

So they can be swapped between hazard classes

Question 9

On a portable tank that holds less than 1,000 gallons, where must the identification number appear?

Accepted Answer

On two opposing sides — Portable tanks and other bulk packages of 1,000 gallons or more show the number on every side and end. A portable tank under 1,000 gallons needs it only on two opposing sides.

Answer

On the rear only

Answer

On each side and each end

Answer

On the top only

Question 10

What does the manual require of the surface a hazardous materials placard is mounted on?

Accepted Answer

It must be a background of contrasting color — Each placard has to be attached where the color behind it contrasts with the placard, so the placard stands out.

Answer

It must be painted white

Answer

It must be bare metal

Answer

It must be an orange reflective panel

Question 11

The manual's detailed hazardous materials chart splits Class 2 into three divisions. What is Division 2.2?

Accepted Answer

Non-flammable gases — Division 2.1 is flammable gases, 2.2 is non-flammable gases (helium is the example) and 2.3 is poisonous or toxic gases.

Answer

Poisonous or toxic gases

Answer

Oxidizers

Answer

Flammable gases

Question 12

A bulk load needs no placards but must still show its identification number. Besides an orange panel, what may the number be displayed on?

Accepted Answer

A white, diamond-shaped background — The identification number goes in black digits 100 mm (3.9 inches) high on an orange panel, on a placard, or, when no placard is required, on a white diamond-shaped background.

Answer

A red octagonal panel

Answer

A blue circular disc

Answer

A yellow triangular plate

Idaho CDL — General Knowledge: Road Signs practice test

Study questions with answers

1. Apart from the certain bulk packages that may be placarded on two opposite sides or carry labels, where must a bulk package be placarded?

2. A shipper has put the letters 'RQ' on a package and on its shipping paper. What does that tell you?

3. Which of these loads must be placarded no matter how small the amount, because it falls under Placard Table 1?

4. Besides the shipping name of its contents, what must a portable tank display?

5. Some hazardous materials identification numbers start with 'NA' rather than 'UN.' What does the manual say about 'NA' numbers?

6. The manual pictures a highway sign addressed to truckers about runaway truck ramps. What does the sign tell them?

7. At one dock you load 2,500 pounds of a Table 2 flammable liquid. At another stop you add 600 pounds of a Table 2 corrosive. Can DANGEROUS placards cover the entire load?

8. Why does the manual say hazmat placards must be kept clean and undamaged?

9. On a portable tank that holds less than 1,000 gallons, where must the identification number appear?

10. What does the manual require of the surface a hazardous materials placard is mounted on?

11. The manual's detailed hazardous materials chart splits Class 2 into three divisions. What is Division 2.2?

12. A bulk load needs no placards but must still show its identification number. Besides an orange panel, what may the number be displayed on?

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