CDL General Knowledge Study Guide #13

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You should let air out of hot tires so the pressure goes back to normal. *

1 point

True

False

Why should you be in the proper gear before starting down a hill? *

1 point

Because gravity can cause the speed of your vehicle to increase

Because you don't want to shift going down a hill

Because the clutch works better up a hill

You can safely remove the radiator cap as long as the engine isn't overheated. *

1 point

True

False

How does "bleeding tar" affect the road surface and driving conditions? *

1 point

It is very sticky slowing down your vehicle

Tar in the road pavement rises to the road surface in very hot weather causing the roads to become very slippery

It does not affect the road surface or driving conditions

What are some advantages of going right instead of left around an obstacle? *

1 point

You can avoid a head-on collision

Taking the shoulder may be best

Someone may be passing to the left

All of these answers are correct

Which of the following statements about backing is true? *

1 point

Backing is always dangerous

You should back and turn towards the driver's side whenever possible

You should use a helper and communicate with hand signals

AII of these answers are true

What are some things to do at an accident scene to prevent another accident? *

1 point

Try to get your vehicle to the side of the road

If you're stopping to help, park away from the accident

Put on your flashers and set out reflective triangles

All of these answers are correct

What factors determine your selection of "safe" speed when going down a long steep downgrade? *

1 point

Size of vehicle, traffic conditions, curves in the road

Condition of the brakes, radio bulletins, and alertness of the driver

Total weight of the vehicle, length of the grade, steepness, road conditions, and weather

You are driving a vehicle that could safely be driven at 55 mph on an open road; but traffic is now heavy, moving at 35 mph, although the speed limit is 55. The safest speed for your vehicle in this situation is most likely: *

1 point

35 mph

40 mph

45 mph

Which of these statements about certain types of cargo is true? *

1 point

Oversize loads can be hauled without special permits during daylight hours

When liquids are hauled, the tank should always be loaded completely full

Unstable loads such as hanging meat or livestock require extra caution on curves

All of these answers are correct

What is a hazard? *

1 point

Any road condition or other road user that is a possible danger

A flashing amber light

A small animal

If you are stopped at a rest area and found to have a BAC (Blood Alcohol Concentration) of .02 you will: *

1 point

Be placed out of service for 24 hours

Be placed out of service for 48 hours

Be placed out of service for 72 hours

The parking brake should be tested while the vehicle is: *

1 point

Moving slowly

Moving at highway speed

Moving forward slowly

Stopping isn't always the safest thing to do in an emergency. *

1 point

True

False

Every time you park your vehicle and shut the engine off you should: *

1 point

Leave it in gear (if it has a manual transmission)

Apply the parking brake

Turn the steering wheel as far to the left as you can

The most common cause of serious vehicle skids is: *

1 point

Driving too fast for road conditions

Poorly adjusted brakes

Over-inflated tires

Why make emergency plans when you see a hazard? *

1 point

To have something to do while driving

In order to protect yourself and others

To avoid getting a ticket

What is an "escape ramp"? *

1 point

Ramps that are located a few miles from the top of a downgrade to help you stop

A quick way to get out of town

Ramps to get on and off an interstate highway fast

How can you avoid wet brake problems? *

1 point

Speed up, shift to a higher gear

Slow down, shift to a low gear, gently put on the brakes

Apply the brakes harder and faster

How far ahead should you be looking while driving in town? *

1 point

1 block

2 blocks

As far ahead as you can see

Name two causes of fires: *

1 point

Underinflated tires and duals that touch

Tight turns and gravel roads

Driver smoking and following too close

A driver's trip log if required: *

1 point

May be brought up to date once a week

May be written in pencil

Must be shown immediately when an officer requests it

Converter dollies built on or after March 1, 1998 are required to have anti-lock brakes. These dollies will have: *

1 point

A yellow malfunction lamp in the center of the dolly

A yellow malfunction lamp on the left side of the dolly

A yellow malfunction lamp on the right side of the dolly

For an average commercial vehicle being driven at 55 mph on dry pavement it will take about __ to bring the vehicle to a stop. *

1 point

The length of a football field (300 feet)

Half the length of a football field (150 feet)

Twice the length of the vehicle

Which of these can cause the vehicle to skid? *

1 point

Not enough weight on the front axle

Over-acceleration

Turning too sharply

All of these answers are correct

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