General Knowledge11 (Drivingtests.org)

Which of these statements about double clutching and shifting are true?

You can use the sound of the engine to tell you when to shift.
Double clutching should not be done with an unsynchronized manual transmission.
Both of these are true.

While you’re driving, if your reaction time increases by _______, your chances of a crash will double.

¼ second.
½ second.
1 second.

In bad weather, car drivers are more likely to tailgate CMVs. If that happens to you, what should you do?

Increase your following distance.
Flash your brake lights.
Increase your speed.

If you need to see down the sides and towards the rear of your trailer, what mirror should you use?

Fender mirrors
Plane (west coast) mirrors
Convex mirrors

When backing and turning a large CMV, you should:

Back and turn toward the driver’s side if possible.
Check your path before you start to back up.
Do both of these.

Most trucks on the road today have a _______ electrical system.

6-volt.
12-volt.
24-volt.

To fight a fire in the engine compartment, you should open the hood to target the base of the fire.

True.
False.
Impossible to determine without more information.

In a four-stroke diesel engine, fuel is injected into the cylinder during the:

compression stroke.
power stroke.
exhaust stroke.

Which of these statements about a differential is FALSE?

It lets each side of the axle turn at a different rate.
On a curve, it lets the outside wheels turn slower.
On a curve, it lets the outside wheels turn faster.

If you’re driving a tractor-trailer down a long, steep downgrade, you should:

Use only your trailer brakes.
Use the braking effect of the engine.
Use controlled braking.

You should take a break from driving:

Every 5 hours.
Every 7 hours.
Whenever you become drowsy.

Which of these is part of the steering system?

Bearing plate.
Torque arm.
Pitman arm.

Lumpers are persons usually employed by _________ to unload cargo from the truck at the receiver.

the carrier.
a third party.
the receiver.

How do you correct a drive-wheel acceleration skid on a slippery road?

Apply the brakes.
Increase power to the drive wheels.
Stop accelerating and push in the clutch.

An en route inspection should include checking:

The cargo securement.
The tires.
Both of these.

You are cited for speeding in your personal car, and you pay the speeding ticket rather than go to court. You must report this to your employer within:

14 days.
30 days.
3 days.

When loading the cargo compartment of a vehicle, you should place heavy items on the bottom and the light items on top.

True.
False.

Should your vehicle catch fire, pull into a service station because it has plenty of firefighting equipment.

True.
False.

Each lane on an interstate highway is at least _______ wide.

11 feet.
12 feet.
14 feet.

Driving under the influence of a drug that causes you to drive unsafely is:

permitted if it is a diet or cold medication.
permitted if it is prescribed by a doctor.
against the law.

Escape ramps can:

Prevent injury to the driver and passengers.
Prevent damage to the vehicle.
Do both of these.

In which of these situations should you consider turning off your vehicle’s retarder?

Under wet or icy road conditions.
When the road is clear and dry.
When driving through mountainous areas.

In which of these situations should you flash your brake lights?

You are about to exit the road and need to slow down.
You're being tailgated.
A police car is approaching you from the opposite direction.

If a straight truck goes into a front-wheel skid, it will

go straight ahead but turn if the steering wheel is turned.
slide sideways and spin out.
go straight ahead even if the steering wheel is turned.

When you start to move up a hill from a stop:

Release the parking brake as you apply engine power.
Keep the trailer brake hand valve control applied until you reach 20 mph.
Engage the clutch and accelerate quickly.

Which of these is a good thing to remember about using mirrors?

Convex mirrors make things look larger and closer than they really are.
There are “blind spots” that your mirrors cannot show.
You should look in a mirror for several seconds at a time.

Cargo that is not loaded or secured properly can:

injure the driver or other road users.
cause vehicle damage by overloading.
do both of these.

Which of the following vehicles will have the longest stopping distance?

Bobtail tractor.
Unloaded tractor-trailer.
Loaded tractor-trailer

If a tractor-trailer’s cargo is loaded too far to the rear, the result may be:

damage to the steering axle.
poor traction on the drive wheels.
wheel lockup.

When you’re driving in snowy weather, your tire tread depth should:

Be checked every 3 hours or 150 miles.
Provide enough traction to drive through snow.
Be double the usual depth.

Your brakes fail while you are traveling down a long, steep downgrade. What should you do?

Downshift.
Look for an escape ramp or escape route.
Do both of these.

One gallon of diesel fuel weighs approximately:

6 pounds.
7 pounds.
8 pounds.

Cargo inspections:

should be performed after every break you take while driving.
are needed only if your vehicle is placarded for hazardous materials.
are usually not your responsibility.

Underinflated tires can cause a tire fire.

True.
False.

Which of the following does NOT cause a front-wheel skid?

Too little weight on the front wheels.
Turning while braking hard.
Too little weight on the tandem trailer axles.

What is the advantage of pre-setting radio stations, pre-programming the GPS navigator, reading maps, and adjusting mirrors BEFORE the driver starts the trip?

It can help prevent driver fatigue.
It can help prevent distracted driving.
It can help reduce driver fatigue when driving at night.

As a driver’s blood alcohol concentration (BAC) rises, what happens?

The effects of the alcohol subside.
The driver's chances of an accident increase.
The person remains aware of the increased effects.

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

Unstable loads such as hanging meat or livestock can require extra caution on curves.
Heavy loads that consist of liquids in bulk do not cause handling problems.
When liquids are hauled, the tank should always be loaded totally full.

Your brakes can get wet when you drive in heavy rain. Wet brakes can cause:

Wheel lockup.
Pulling to one side.
Both of these.

When a DOT inspector pulls you over for a roadside inspection, which of these is the inspector likely to look at FIRST?

Your truck's braking system.
Your logbook.
You.

Which of these statements about using the steering wheel is true?

Use both hands only when attempting a difficult turn.
If you do not hold the steering wheel with both hands, it could pull out of your grasp.
Once you reach a cruising speed on a highway, you can drive with one hand.

The key point in balancing cargo weight is to keep the load:

to the rear.
to the front.
centered.

You are driving a long vehicle that makes wide turns. You want to turn left from a two-way, four-lane street onto another two-way, four-lane street. What should you do?

Start to turn your vehicle after you reach the center of the intersection.
Start to turn your vehicle as soon as you enter the intersection.
Turn slightly left before you enter the intersection.

When transporting cargo, how often should you check the securement of the cargo?

Within the first 50 miles of the trip and then every 150 miles or every 3 hours, whichever comes first.
Within the first 50 miles of the trip and then every 100 miles or every 2 hours, whichever comes first.
Within the first 25 miles of the trip and then every 100 miles or every 2 hours, whichever comes first.

What kinds of things should you inspect during a trip?

Gauges, brakes, lights, tires, and cargo securement.
Gauges, brakes, lights, pumps, and hoses.
Gauges, exhaust, lights, cargo securement, and radio.

What is the Gross Vehicle Weight Rating (GVWR)?

The minimum allowed weight of a vehicle and its load.
The maximum allowed weight of a vehicle and its load.
The actual weight of a vehicle and its load.

Which of these is part of your vehicle’s suspension?

Drag link.
Pitman arm.
Neither of these.

What is a power take-off (PTO)?

Applying additional power to decouple a trailer.
Downshifting to pass another vehicle.
Using engine power to run a secondary application.

A vehicle is loaded with very little weight on the drive axles. What may happen?

Damage to drive axle tires.
Poor traction.
Better handling.

What do the letters “GVW” stand for?

Government vehicle weight.
Gross vehicle weight.
Gross variable weight.

Which of the following is true about hours-of-service regulations?

A driver can spend only 6 hours of an off-duty period in the vehicle's sleeper berth.
A driver must take a break after every 3 cumulative hours of driving time.
On-duty time must be balanced with time for rest.

Which of these statements about drinking alcohol is true?

Coffee and fresh air can sober a person up.
A few beers have the same effect on driving as a few shots of whiskey.
Some people aren't affected by drinking.

Which of these CDL tests can you fail and still be issued a CDL?

Basic control skills test.
Vehicle inspection test.
Theory test.
I must pass all of these.

What are the two main kinds of jackknifing for a tractor-trailer?

Slippery road and dry road.
Empty and fully loaded.
Tractor and trailer.

You should turn on your four-way flashers whenever you:

Drive through the mountains.
Cross railway tracks.
Stop on the roadway.

Which of these statements about double clutching is true?

You use the clutch to shift into the next gear but not to shift out of the current gear.
You use the clutch to shift out of the current gear but not to shift into the next gear.
When you upshift, the engine speed should increase to the rpm required for the next gear.
When you upshift, the engine speed should decrease to the rpm required for the next gear.

Are you allowed to use a cell phone while you’re driving a CMV?

No.
Yes, but only a hands-free phone.
Yes, but only if your carrier requires you to.

In the continental United States, the maximum width of any CMV operated on interstate highways is _______ unless a special permit is obtained.

8 feet.
8½ feet.
9 feet.

Blocking is used to keep the cargo from shifting.

True.
False.

Which of these statements is true about using emergency reflective triangles at night?

You don't have to use them if you've pulled your vehicle completely off the traveled portion of the roadway.
Regulations require you to set them out within five minutes of stopping your vehicle.
If you stop on a hill or curve, it's necessary to place them up to 500 feet behind your vehicle.

At highway speeds, how far ahead should you be looking?

1/4 mile.
1/2 mile.
1/8 mile.

When driving at night, you should:

Look to the left side of the road when a vehicle is coming toward you.
Adjust your speed to keep your stopping distance within your sight distance.
Drive faster when your low beams are on.

Why can a damaged exhaust system be hazardous to you?

Excessive noise can damage your hearing.
Poisonous fumes can enter the cab or sleeping compartment.
The exhaust can pollute the environment.

You’re driving a tractor-trailer on a slick road surface. Suddenly, excessive braking locks your drive wheels. Your tractor starts to skid, and the trailer starts to push the tractor sideways. You must act to correct the skid before the trailer swings out approximately:

15 degrees.
30 degrees.
50 degrees.

What are the three rules for using your turn signals?

1. Signal early. 2. Signal continuously. 3. Make sure the signal turns off after the turn is completed.
1. Signal early. 2. Signal continuously. 3. Use hand-and-arm signals only when it’s raining.
1. Signal when changing lanes. 2. Signal when turning corners. 3. Make sure the signal turns off after the turn is completed.

Which of these statements about drinking alcohol are true?

Alcohol first affects a person's judgment and self-control.
A driver can lose his or her license for driving while drunk.
Both of these are true.

Federal regulations do NOT require every CMV to have:

Warning devices when stopped on the road.
A first-aid kit.
A fire extinguisher.

To help prevent a rollover, you should do two things: keep the cargo as close to the floor as possible, and:

Keep both hands firmly on the wheel.
Make sure the brakes are adjusted.
Drive slowly around turns.

In which of these situations can strong winds most affect your driving?

Around a sharp curve.
On an open highway.
Upon exiting a tunnel.

General Knowledge11 (Drivingtests.org)

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