Idaho CDL — General Knowledge: Handling Emergencies Practice Test

Question 1

During a school bus evacuation the radio doesn't work. Whom does the manual say to send for help first, and whom only as a last resort?

Accepted Answer

First a passing motorist or area resident; as a last resort, two older, responsible students — Without a working radio the driver asks someone driving by, or a person who lives nearby, to call for help. Sending two older, dependable students is the final option.

Answer

First the youngest student; last a teacher

Answer

No one; wait until someone notices

Answer

First two students; last a passing motorist

Question 2

Corrosive liquid has leaked onto parts of your vehicle. What does the manual say to do with those parts?

Accepted Answer

Wash them thoroughly with water — Any part of the vehicle that corrosive liquid has touched needs a thorough water wash, and after unloading the interior should be washed out promptly before reloading.

Answer

Leave them to air dry

Answer

Coat them with oil

Answer

Wipe them with a dry rag

Question 3

Poison gas (Division 2.3) or a Division 6.1 poison has leaked in your vehicle. What must happen before the vehicle goes back into service?

Accepted Answer

It must be checked for stray poison — After such a leak the vehicle has to be inspected for any poison left behind before anyone uses it again.

Answer

It must be repainted

Answer

Its tires must be replaced

Answer

It must sit unused for 30 days

Question 4

A hazardous spill is close to your stopped school bus. What possibility does the manual raise when you weigh evacuating?

Accepted Answer

It may be safer to stay on the bus and avoid contact with the material — Among the questions to consider before evacuating is whether a hazardous spill is involved, with the note that keeping students aboard, out of contact with the material, is sometimes the safer choice.

Answer

The bus should be driven through the spill

Answer

Students should be sent to identify the material

Answer

Students should always be walked through the spill quickly

Question 5

As a general rule, where does the manual say student safety and control are best maintained during a school bus emergency?

Accepted Answer

On the bus, as long as staying doesn't expose students to unnecessary risk or injury — Evacuation is not automatic. Students are generally safer and easier to manage if they stay aboard, provided that staying doesn't put them at needless risk; fire, a stall on railroad tracks or an imminent collision make evacuation mandatory.

Answer

Walking back toward school

Answer

Outside, lined up along the roadway

Answer

In the nearest private home

Question 6

A package of flammable solids in your load is smoldering. Which of these should you NOT do?

Accepted Answer

Open the package to see what is burning — Smoldering packages of flammable solids must be left closed. You warn others, take the smoldering packages off the vehicle when that is safe, and take off intact packages too if doing so reduces the fire hazard.

Answer

Remove unbroken packages if that lowers the fire hazard

Answer

Warn others of the fire hazard

Answer

Remove it from the vehicle if you can do so safely

Question 7

Vehicles carrying explosives have collided. Before the vehicles are separated, what must be done with the explosives?

Accepted Answer

Take all of them out and set them 200 feet or more away from the vehicles and any occupied building — The explosives come out first, and they are placed no closer than 200 feet to the vehicles or to buildings with people in them. Everyone should then keep a safe distance.

Answer

Move them into the cab

Answer

Soak them with water

Answer

Leave them in place and cover them with a tarp

Question 8

A package of radioactive material breaks open in your truck. When may the vehicle be used again?

Accepted Answer

Once it has been cleaned and a survey meter shows it is clear — With a radioactive leak or broken package, you tell your dispatcher or supervisor right away, avoid touching or inhaling the material, and keep the vehicle out of use until it has been cleaned and a survey meter check is done.

Answer

After 24 hours of airing out

Answer

As soon as the package is removed

Answer

After the next scheduled inspection

Question 9

Which of these is NOT something the manual tells a driver to do when hazardous materials leak or spill?

Accepted Answer

Repack the leaking containers — A driver's job is to keep people away and upwind, warn of the danger, call for help and hand responders the shipping papers. The manual says never to attempt repacking a leaking container, and not to try repairing leaks without training and equipment.

Answer

Give emergency responders the shipping papers

Answer

Keep people away and upwind

Answer

Warn others of the danger

Question 10

A package of Division 6.2 infectious substances is damaged during handling. What should you do?

Accepted Answer

Contact your supervisor immediately — Damage to an infectious substance package calls for getting in touch with your supervisor right away. Packages that look damaged or show signs of leaking should not be accepted in the first place.

Answer

Tape it shut and deliver it

Answer

Leave it at the next rest area

Answer

Repack it in a clean box

Question 11

When is a trailer jackknife, with the trailer's wheels locked and the trailer swinging around, more likely?

Accepted Answer

With an empty or nearly empty trailer — Locked trailer wheels make the trailer swing, and a trailer carrying little or no load locks its wheels more readily. The cure is to release the brakes so the wheels regain grip.

Answer

With new tires on the trailer

Answer

With a fully loaded trailer

Answer

On a dry, straight road

Question 12

You discover a cargo leak while hauling hazardous materials. Why shouldn't you try to identify the material by smell?

Accepted Answer

Some toxic gases wipe out your ability to smell, and they can hurt or kill you without having any odor — The leaking material should be identified from the shipping papers, labels or package location. Sniffing for it is dangerous: a toxic gas may ruin your sense of smell, and an odorless one can still injure or kill.

Answer

The smell clings to the shipping papers

Answer

Most hazardous materials have no smell at all

Answer

Smelling it voids the shipper's certification

Idaho CDL — General Knowledge: Handling Emergencies practice test

Study questions with answers

1. During a school bus evacuation the radio doesn't work. Whom does the manual say to send for help first, and whom only as a last resort?

2. Corrosive liquid has leaked onto parts of your vehicle. What does the manual say to do with those parts?

3. Poison gas (Division 2.3) or a Division 6.1 poison has leaked in your vehicle. What must happen before the vehicle goes back into service?

4. A hazardous spill is close to your stopped school bus. What possibility does the manual raise when you weigh evacuating?

5. As a general rule, where does the manual say student safety and control are best maintained during a school bus emergency?

6. A package of flammable solids in your load is smoldering. Which of these should you NOT do?

7. Vehicles carrying explosives have collided. Before the vehicles are separated, what must be done with the explosives?

8. A package of radioactive material breaks open in your truck. When may the vehicle be used again?

9. Which of these is NOT something the manual tells a driver to do when hazardous materials leak or spill?

10. A package of Division 6.2 infectious substances is damaged during handling. What should you do?

11. When is a trailer jackknife, with the trailer's wheels locked and the trailer swinging around, more likely?

12. You discover a cargo leak while hauling hazardous materials. Why shouldn't you try to identify the material by smell?

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