Nevada CDL — General Knowledge: Parking & Stopping Practice Test

Question 1

You must back a school bus and no lookout is available. What should you do before backing?

Accepted Answer

Set the parking brake, shut off the motor, take the keys, and walk to the rear to check that the way is clear — Backing a school bus is strongly discouraged. With no lookout available, apply the parking brake, shut the motor off, take the keys with you, and go look from behind the bus to confirm the path is clear.

Answer

Ask a student to watch from the rear window

Answer

Back slowly while sounding the horn

Answer

Turn on the strobe lights and back at normal speed

Question 2

Who counts as attending a parked placarded vehicle?

Accepted Answer

Someone awake in the cab (not in the sleeper berth), or someone within 100 feet who can clearly see it — The attendant must be awake inside the vehicle rather than in the sleeper berth, or no more than 100 feet away with a clear view of it. The attendant must also know the cargo's hazards, know how to respond in an emergency, and be able to move the vehicle.

Answer

Someone asleep in the sleeper berth

Answer

Someone inside a restaurant 300 feet away

Answer

Anyone who has the keys

Question 3

You've just come down a long, steep grade and your brakes are very hot. How should you hold the parked vehicle?

Accepted Answer

Let the brakes cool before setting the parking brakes, and use wheel chocks on level ground — Setting the parking brakes on very hot brakes can damage them. Use wheel chocks on a level surface and let the brakes cool first. Very wet brakes in freezing weather are a similar case, since they can freeze.

Answer

Set the parking brakes immediately

Answer

Pump the service brakes every few minutes

Answer

Leave it in neutral with no brakes set

Question 4

When uncoupling a loaded trailer, what should you do after the landing gear is solidly on the ground?

Accepted Answer

Crank a few extra turns in low gear to take some weight off the tractor — For a loaded trailer, a few extra low-gear turns after ground contact lift some weight off the tractor (without lifting the trailer off the fifth wheel), which makes unlatching and the next coupling easier.

Answer

Raise the trailer completely off the fifth wheel

Answer

Stop cranking immediately

Answer

Release the trailer brakes

Question 5

Before uncoupling a semitrailer, what should you check about the parking area?

Accepted Answer

That the surface can support the trailer's weight — Make sure the parking surface can hold the trailer, and line up the tractor with the trailer, since pulling out at an angle can damage the landing gear.

Answer

That it has painted parking lines

Answer

That it slopes toward a drain

Answer

That it has an electrical hookup

Question 6

Your vehicle has a modulating control valve for the spring brakes. How do you use it to park?

Accepted Answer

Move the lever as far as it goes and lock it in place — A modulating valve applies the spring brakes gradually so you can feel the braking. When parking, push the lever all the way and hold it with the locking device.

Answer

Set the lever halfway

Answer

Leave the lever free so it can spring back

Answer

Use the trailer hand valve instead

Question 7

You break down with a placarded cargo tank of gasoline. Which warning devices may you use?

Accepted Answer

Reflective triangles or red electric lights — Burning signals like flares or fuses are forbidden around a Class 3 or Division 2.1 tank, loaded or empty, and around vehicles with 1.1-1.3 explosives. Use reflective triangles or red electric lights instead.

Answer

Road flares

Answer

Burning fuses

Answer

Liquid-burning flares placed 100 feet back

Question 8

Your work requires you to park a truck loaded with Division 1.1 explosives on private property. What condition applies?

Accepted Answer

The property owner must be aware of the danger — If you must park an explosives load to do your job, keep it brief, use private property only when its owner knows the danger, and make sure someone always watches the vehicle.

Answer

The property must be fenced

Answer

The truck may then be left unattended overnight

Answer

The placards must be covered while parked

Question 9

Before loading or unloading hazardous materials, what must you do with the vehicle?

Accepted Answer

Set the parking brake and make sure it won't move — Set the parking brake before any loading or unloading and make sure the vehicle can't move. Load hazmat away from heat sources and watch for leaking or damaged containers.

Answer

Leave the engine running in gear

Answer

Turn on the four-way flashers only

Answer

Remove the placards

Question 10

At each stop along the route, how should a school bus driver secure the bus?

Accepted Answer

Put the transmission in Park (or Neutral if there is no Park) and set the parking brake — At every stop, shift to Park, or to Neutral if the bus has no Park position, and set the parking brake.

Answer

Keep it in Drive with a foot on the brake

Answer

Shut the engine off and leave it in gear

Answer

Rely on the stop arm to hold the bus

Question 11

Some buses have dual parking control valves with a separate air tank for releasing the spring brakes after main air pressure is lost. What should you keep in mind?

Accepted Answer

That tank holds air for only a few releases, so plan any moves carefully — The separate tank lets you move the vehicle in an emergency, but it has air for only a few releases. Plan carefully, or you may end up stopped in a dangerous spot.

Answer

It can release the brakes as often as needed

Answer

It should be used for everyday parking

Answer

It refills itself from the spring brakes

Question 12

You are about to uncouple a set of twin trailers. How should the rig be parked first?

Accepted Answer

Lined up straight, on firm and level ground — Before uncoupling the rear trailer, line the rig up straight on ground that is firm and level, then set the parking brakes so it can't move.

Answer

At a sharp angle so the dolly swings free

Answer

On a downhill slope so the trailer rolls clear

Answer

Across two lanes of a quiet street

Nevada CDL — General Knowledge: Parking & Stopping practice test

Study questions with answers

1. You must back a school bus and no lookout is available. What should you do before backing?

2. Who counts as attending a parked placarded vehicle?

3. You've just come down a long, steep grade and your brakes are very hot. How should you hold the parked vehicle?

4. When uncoupling a loaded trailer, what should you do after the landing gear is solidly on the ground?

5. Before uncoupling a semitrailer, what should you check about the parking area?

6. Your vehicle has a modulating control valve for the spring brakes. How do you use it to park?

7. You break down with a placarded cargo tank of gasoline. Which warning devices may you use?

8. Your work requires you to park a truck loaded with Division 1.1 explosives on private property. What condition applies?

9. Before loading or unloading hazardous materials, what must you do with the vehicle?

10. At each stop along the route, how should a school bus driver secure the bus?

11. Some buses have dual parking control valves with a separate air tank for releasing the spring brakes after main air pressure is lost. What should you keep in mind?

12. You are about to uncouple a set of twin trailers. How should the rig be parked first?

More CDL — General Knowledge topics

Practice Parking & Stopping in another state