CDL General Knowledge Study Guide #7

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The amount of liquid to load into a tank depends on: *

1 point

The weight of the liquid

The legal weight limits

The amount of liquid will expand in transit

All of these answers are correct

Which of these describes how you should use the brake pedal on a steep downhill grade? *

1 point

Release the brake when you are 5 MPH below your safe speed, then let your speed come back up to your safe speed and repeat braking again (bring your speed down 5 MPH below your safe speed)

With stronger pressure as the vehicle goes downhill

Light steady pressure

Which of these statements about drinking alcohol is true? *

1 point

Alcohol first affects judgment and self-control, which are essential for safe driving

Statistics show that drivers who have been drinking have a much greater chance of being in a crash

A driver can lose their license for driving while under the influence of alcohol

All of these answers are true

The new BAC (Blood Alcohol Concentration) for commercial drivers to be considered intoxicated when driving a commercial vehicle is: *

1 point

0.02

0.06

0.04

You should use your mirrors to check: *

1 point

Traffic gaps before you merge

The condition of the tires and cargo

Where the rear of your vehicle is while you make turns

All of these answers are correct

According to the driver's manual, why should you limit the use of your horn? *

1 point

It wears down the battery

It can startle other drivers

The horn is not a good way to let others know you're there

Your brakes can get wet when you drive through a heavy rain. What can this cause when the brakes are applied? *

1 point

Lack of braking power

Trailer jackknife

Wheel lockup

All of these answers are correct

If you are convicted for driving under the influence while driving a commercial vehicle, and this is your first offense, you will most likely get: *

1 point

A fine of $500

Probation for a period of one year

At least a one-year suspension of your CDL

Which of these is a proper use of vehicle lights and flashers? *

1 point

Flashing your brake lights to warn someone behind you of a hazard that will require slowing down

Turning on your headlights during the day when visibility is reduced due to rain or snow

Flashing your brake lights to warn someone behind you that you're are going to stop on the road

All of these answers are correct

An en-route inspection should include checking: *

1 point

Cargo doors and/or cargo securement

Tire temperature

Brake temperature

All of these should be checked

The purpose of a baffle is to: *

1 point

Control the load surge

Separate the load

To keep expansion of load down

Which of these tell you that cargo contains hazardous materials? *

1 point

A four-inch, diamond shaped hazardous materials label on the container

A hazardous materials placard on the vehicle

Both of these answers are correct

Neither of these answers are correct

Which of these statements about using mirrors is true? *

1 point

There are blind spots that your mirrors cannot show you

You should check your mirrors twice for a lane change

You should look at a mirror for several seconds at a time

The distance that you should look ahead of your vehicle while driving amounts to about __ at highway speed. *

1 point

¼ mile (one-fourth)

25 feet

1 mile

To avoid a crash, you had to drive onto the right shoulder. You are now driving at 40 MPH on the shoulder. How should you move back onto the pavement? *

1 point

Keep moving at the present speed and steer very gently back onto the pavement

Come to a complete stop, if possible, before steering back onto the pavement

Brake hard to slow the vehicle, then steer sharply onto the pavement

You are testing the stopping action of service brakes on a hydraulic system. Which of these can mean there is a problem? *

1 point

The brake pedal goes to the floor

Stopping action is delayed

The vehicle pulls to one side when the brake pedal is pressed

All of these answers are correct

Which of these statements about managing space is true? *

1 point

Smaller vehicles require more space to stop than larger ones

When the road is slippery, you should keep much more space in front of your vehicle

Many accidents are caused by drivers keeping too much space in front of their vehicles

Truck escape ramps: *

1 point

Cannot be used by certain types of heavy vehicles

Are designed to protect vehicles from damage

Should not be used unless you have first tried all other ways to save your vehicle after brake failure

Which of these can cause the vehicle to skid? *

1 point

Not enough weight on the front axle

Over acceleration

Turning too sharply

AII of these can cause a vehicle to skid

On which areas can you use the "ABC" fire extinguisher? *

1 point

Electrical fires

Burning tires

Burning cloth

All of these answers are correct

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