CDL General Knowledge Study Guide #4

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Which of these statements about accelerating is true? *

1 point

Rough acceleration can cause mechanical damage

You should feel a "jerking" motion if you are accelerating your vehicle properly

When traction is poor, more power should be applied to the accelerator

You are driving on a two-lane road. An oncoming driver drifts into your lane and is headed straight for you. Which of these is most often the best action to take? *

1 point

Hard braking

Steer to the right

Prepare for impact

Which of these is a good thing to remember when crossing or entering traffic with a heavy vehicle? *

1 point

Heavy vehicles need larger gaps in traffic than cars

The best way to cross traffic is to pull the vehicle partway across the road and block one lane while waiting for the other to clear

Because heavy vehicles are easy to see, you can count on other drivers to move out of your way or slow down for you

Stab braking: *

1 point

Should never be used

Involves releasing the brakes only after the wheels lock up

Involves steady pressure on the brake pedal without locking the wheels

High beams should be: *

1 point

used when it is safe and legal to do so.

Turned on when an oncoming driver does not dim his or her lights.

Dimmed at the time that you get within 100 feet of another vehicle.

You must park on the side of a level, straight, two-lane road. Where should you place the reflective triangles? *

1 point

One within 10 feet of the rear of the vehicle, one about 100 feet to the rear, and one about 200 feet to the rear

One within 10 feet of the rear of the vehicle, one about 100 feet to the rear, and one about 100 feet to the front of the vehicle

One about 50 feet to the rear of the vehicle, one about 100 feet to the rear, and one about 100 feet to the front of the vehicle

Other:

Which of these is the most important thing to remember about emergency braking? *

1 point

disconnecting the steering axle brakes will help keep your vehicle in a straight line during emergency braking.

if the wheels are skidding, you cannot control the vehicle.

never do it without downshifting first.

Where or when should you test the stopping action of your service brakes? *

1 point

In the parking lot when the vehicle is not moving

When the vehicle is moving at about 5 mph

At a special Brake Testing Center only

If a straight vehicle (no trailer or articulation) goes into a front-wheel skid, it will: *

1 point

Slide sideways and spin out

Go straight ahead even if the steering wheel is turned

Go to the right

Which of these is not part of the pre-trip inspection of the engine compartment? *

1 point

Valve clearance

condition of the hoses

worn electrical wiring insulation

Your truck is in a traffic emergency and may collide with another vehicle if you do not take action. Which of these is a good rule to remember at such a time? *

1 point

You can almost always turn to miss an obstacle more quickly than you can stop

Stopping is always the safest action in a traffic emergency

Leaving the road is more risky than hitting another vehicle

What should you do when your vehicle hydroplanes? *

1 point

Accelerate slightly

Counter-steer hard

Release the accelerator

Which of these statements about engine overheating is true? *

1 point

If your engine overheats within 20 miles of the end of your trip, you should complete the trip and then check the problem

You should never shut off an overheated engine until it cools

You should never remove the radiator cap on a pressurized system until the system has cooled

Which of these statements about staying alert to drive is true? *

1 point

A half-hour break for coffee will do more to keep you alert than a half-hour nap

There are drugs that can overcome fatigue

Sleep is the only thing that can overcome fatigue

Cargo that can shift should have at least __ tie-downs(s). *

1 point

The road you are driving on becomes very slippery due to glare ice. Which of these is a good thing to do in such a situation? *

1 point

Stop driving as soon as you can safely do so

Downshift to stop

Apply the brakes often to keep the linings dry

Cargo Covers: *

1 point

Protect people from spilled cargo.

May be a safety requirement in some states.

Both of these are correct.

It takes the body about ___ hours to get rid of the alcohol in four drinks. *

1 point

You are starting your vehicle from a stop. As you apply power to the driver wheels, they start to spin. You should: *

1 point

Take your foot off the accelerator

Press harder on the accelerator

Try a lower gear

Which of these statements about tires and hot-weather driving is true? *

1 point

The air pressure of a tire decreases as the temperature of the tire increases

If a tire is too hot to touch, you should drive on it to cool it off

You should inspect your tires every two hours or every 100 miles when driving in very hot weather

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