Most serious skids are a result of:

Driving too fast for conditions.

When you are driving at night, you should:

Adjust your vehicle speed for sight distance.

Bridge formulas are designed to:

Permit less maximum axle weight for axles that are closer

Which of the following statements about backing is NOT true.

You should back quickly until you bump the dock

On a straight and level roadway traveling at 60 mph, you have a blow out. What should you do.

Grip steering wheel firmly and stay off the brake.

The braking effect of the engine is greatest when:

near governed rpms and the transmission is in lower gears

When you see a hazard in the road in front of you, you should

Steer and counter steer around it

You break down on a level, straight, 4-lane, divided highway, where should the triangles be?

10, 100, and 200 feet from the rear of the vehicle.

Which of the following is true about the use of reflective emergency triangles?

The regulation requires they be placed within 10 minutes.

The proper way to load a vehicle is?

Keep the load balanced in the cargo area.

When fighting a fire, which is most correct?

Aim the fire extinguisher at the base of the fire

Shifting gears properly is important because:

Doing so helps you maintain control of the vehicle

If you are being tailgated you should:

Increase your following distance

Which of the following is true?

Tires with tread separation or cuts should not be used.

Controlled braking is:

Apply firm brake pressure, but not to the point of lock-up

Which of the following statements is true?

Hazards are easier to see during the day than at night

What is the purpose of a pre-trip inspection?

To find problems that could lead to a breakdown or accident

What three factors add up to the total stopping distance for a commercial motor vehicle

Perception distance, reaction distance, and braking distance

Which of the following is true concerning cold weather driving

Use windshield washer fluid which contains anti-freeze

Aggressive driving is:

Operating without regard for the rights or safety of others

Can federal inspectors inspect your truck of bus?

Yes, and they have authority to place you out-of-service

What is hydroplaning?

Vehicle's tires lose contact with the road due to water.

When traveling down a long downgrade, you should always:

Use the braking effect of the engine

The Driver's Manual says you should use your horn:

If it may help you to avoid a collision

Which of the following is true about rear drive wheel braking skids?

The trailer can push the towing vehicle sideways

Convex (curved) mirrors will:

Show a wider area than flat mirrors

While driving you are looking ahead of your vehicle. How should you be looking?

Look back and forth and near and far

Controlled braking is used when:

To keep the vehicle in a straight line while braking

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CDL General Knowledge

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CDL test general knowledge questions

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Questions 45

Answers

1
Most serious skids are a result of:
Improper loading of the vehicle.
All of the above
Not braking hard enough.
Driving too fast for conditions.
2
Which of the following should you do when dealing with a tailgater?
Avoid tricks such as flashing your brake lights.
All of the above.
Increase your following distance
Avoid quick changes
3
If you aren't sure that you have safe space to pass under an object, you should:
Assume all clearances are of sufficient height.
All of the above.
Not a concern if you stay on state or federal roadways
Take another route
4
When you are driving at night, you should:
Watch the white line on the left side of the roadway.
Always use your high beam headlights
Keep you high beams on at all times.
Adjust your vehicle speed for sight distance.
5
Bridge formulas are designed to:
Determine the total gross vehicle weight of a vehicle
Permit the same maximum axle weight for any axle spacing
Permit less maximum axle weight for axles that are closer
Permit less maximum axle weight for axles further apart
6
Which of the following statements about backing is NOT true.
Use mirrors on both sides of your vehicle
Always back toward the driver's side when possible
Both A and C
You should back quickly until you bump the dock
7
On a straight and level roadway traveling at 60 mph, you have a blow out. What should you do.
Immediately begin light, controlled braking
Immediately begin emergency braking.
Immediately begin stab braking
Grip steering wheel firmly and stay off the brake.
8
The braking effect of the engine is greatest when:
above governed rpms and the transmission is in high gears
above governed rpms and the transmission is in lower gears
near governed rpms and the transmission is in lower gears
near governed rpms and the transmission is in high gears
9
When you see a hazard in the road in front of you, you should
Stop quickly and get off the roadway if possible
Don't Dodge it, Ram it.
Turn on your 4-way flashers to warn others
Steer and counter steer around it
10
You break down on a level, straight, 4-lane, divided highway, where should the triangles be?
50 and 100 feet from the rear, and 200 feet from the front.
10, 100, and 200 feet from the rear of the vehicle.
100, 200, and 300 feet from the rear of the vehicle.
10 and 100 feet from the rear, and 100 feet from the front.
11
Which of the following is true about the use of reflective emergency triangles?
The regulation requires they be placed within 10 minutes.
You do not need to use them if you stop on a hill or curve.
You do not need to use them if you use your 4-ways.
You don't need them if you are completely off the roadway.
12
Which of the following is a sign of drowsy driving?
Your eyes close or go out of focus by themselves
You can't stop yawning
You drift between lanes
All of the above
13
The proper way to load a vehicle is?
Keep the load balanced in the cargo area.
It makes no difference where the cargo is placed.
Place the load at the front of the trailer.
Place the load at the rear of the trailer.
14
When fighting a fire, which is most correct?
All of the above
Aim the fire extinguisher at the base of the fire
Get as close to the fire as possible
Aim the fire extinguisher at the top of the fire
15
An unsafe vehicle will be put out of service for how long?
Until you contact your carrier for repairs
24 hours
Until it is fixed
48 hours
16
Your vehicle is 40 ft long and traveling at 50 mph. The safe following distance is:
5 Seconds
4 seconds
3 seconds
6 seconds
17
Why do hazardous materials regulations exist?
To communicate a risk
To provide for safe drivers and equipment
To contain the product
All of the above
18
Alcohol use impairs:
Muscle coordination
All of the above
Depth perception
Reaction time
19
Shifting gears properly is important because:
It helps to keep the oil flowing through the crankcase
It keeps the radiator cool
Doing so helps you maintain control of the vehicle
It keeps the engine at the proper operating temperature
20
If you are being tailgated you should:
Increase your following distance
Motion for the driver to pass you when it is safe
Turn on your 4-way flashers
Slam on your brakes
21
Which of the following is true?
Tires with tread separation or cuts should not be used.
1/32 inch tread depth is permissible for steering tires?
1/32 inch tread depth is allowed on drive tires
Tires that are mismatched sizes should be used.
22
When you are driving through construction zones, you should?
Speed up and hurry through them.
Watch for uneven surfaces
Reduce your speed only if construction workers are present.
Stop before entering them, get in low gear and proceed.
23
Controlled braking is:
Apply firm brake pressure, but not to the point of lock-up
Lock-up the wheels, then release and then reapply again.
Only used if the vehicle does not have anti-lock brakes.
Applying brakes hard enough for the wheels to lock up.
24
Drinking alcohol can affect your
All of the above
Coordination and reaction time
Judgment
Vision
25
Which of the following statements is true?
It is recommended that you use your high beams at all times.
Most drivers are more alert at night than during the day
Hazards are easier to see during the day than at night
Hazards are easier to see at night than during the day
26
What is the purpose of a pre-trip inspection?
To find problems that could lead to a breakdown or accident
To aid you in being cited by a law enforcement official
To see if an additional 1,000 pounds of freight can be added
To add an additional 15 minutes of time to your log book
27
According to the CDL manual, why should you limit the use of your vehicle's horn?
Keep both hands on the steering wheel at all times.
The CDL manual does not say anything about the horn.
It may startle other drivers.
The air horn will not work if you are using the air brakes.
28
What three factors add up to the total stopping distance for a commercial motor vehicle
Perception distance, reaction distance, and response distanc
Eye lead time, reaction distance, and braking distance
Perception distance, reaction distance, and braking distance
Response distance and braking distance
29
________ are signs put on the outside of a vehicle which identify the hazard class of the cargo
All of the above
Shipping papers
Placards
Labels
30
Which of the following is true concerning cold weather driving
If the temperature is below 32° F, the engine can't overheat
Use windshield washer fluid which contains anti-freeze
Using bleach on tires will provide increased traction
Exhaust system leaks are not of concern during cold weather
31
Aggressive driving is:
All of the above
Acceptable during rush hour in a metropolitan area
Operating without regard for the rights or safety of others
Operating in a cautious and courteous manner
32
Can federal inspectors inspect your truck of bus?
Yes, but only at a port of entry
No
Yes, but they have no authority to place you out-of-service
Yes, and they have authority to place you out-of-service
33
When driving in fog, you should:
Stop on the side of the road
Increase your vehicle's speed
Use low-beam headlights
All of the above
34
What is hydroplaning?
Excessive heat built up in the radiator
Something that only occurs at high vehicle speeds
When an aircraft must make an emergency landing on a highway
Vehicle's tires lose contact with the road due to water.
35
Which of the following happens when a tire blows at highway speed?
The high air pressure signal device will come on
You will feel a vibration
First you say it, then you do it
You will hear a hissing sound
36
When traveling down a long downgrade, you should always:
Downshift when you exceed a safe speed
Apply trailer brakes to reduce speed or maintain speed
Exceed the posted speed limit
Use the braking effect of the engine
37
The Driver's Manual says you should use your horn:
When a car gets in the way
To make the deer standing alongside the road to move away
When you begin to change lanes
If it may help you to avoid a collision
38
If you drive through heavy rain or standing water, your brakes may get wet. What can this cause
Trailer jackknife
Hydroplaning
Hydroplaning if you were traveling faster than 30 MPH.
Your brakes to heat up.
39
Which of the following is true about rear drive wheel braking skids?
It is not a cause of jackknifing
The vehicle's front wheels will slide sideways
The trailer can push the towing vehicle sideways
The locked wheels have more traction
40
Convex (curved) mirrors will:
Make objects appear to be larger than they really are
Make objects appear to be closer than the really are
Make objects appear closer and larger than they really are
Show a wider area than flat mirrors
41
While driving you are looking ahead of your vehicle. How should you be looking?
Stare straight ahead at all times
Look back and forth and near and far
Look to the right side of the roadway
All of the above
42
Controlled braking is used when:
Only used when the vehicle is equipped with anti-lock brakes
You must stop as quickly as possible
Is only use with hydraulic brakes
To keep the vehicle in a straight line while braking
43
Water will extinguish which of the following fires?
Electrical
Gasoline
Tire
Diesel fuel
44
Before entering a curve, you should:
Slow down to a safe speed
Come to a complete stop and proceed as slowly as possible
Increase your speed to increase vehicle stability
All of the above
45
Which of the following conditions may produce a skid?
Driving too fast for conditions
All of the above
Overbraking
Oversteering

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