General knowledge

Question 1

Where should you place your warning devices if you must stop on a one-way road or divided highway?

Answer 1

10 feet, 100 feet, and 200 feet toward approaching traffic

Question 2

If you double your speed, how much more distance will it take to brake to a stop

Answer 2

Four times as much

Question 3

What might happen if you swing wide to the left before you turn right?

Answer 3

Someone might try to pass you on your right.

Question 4

How many tie-downs are required for a 20-foot load

Answer 4

4

The rule is that you should have one tie-down per 10 feet of cargo, and you must have at least two per load, regardless of the length. So for 20 feet, you should have two tie-downs.

Question 5

What is the best way to figure out how many seconds of following distance you have?

Answer 5

Wait until the vehicle ahead of you passes a shadow or landmark. Then count the seconds until you reach it.

Question 6

What is the gross vehicle weight (GVW)?

Answer 6

The total weight of a single vehicle and its load

Question 7

Why is Letting the air out of hot tires bad?

Answer 7

It’s a bad idea because when the tires cool off, the pressure will be too low

Question 8

For how long will you lose your CDL driving privileges if you are convicted of a second DUI offense in either a CMV or your private vehicle?

Answer 8

For Life

Question 9

Do empty trucks have the best braking

Answer 9

No

Question 10

You should put the starter switch key into your pocket while you perform the pre-trip inspection because

Answer 10

someone could start and move the truck.

Question 11

The minimum tire tread depth for front tires is

Answer 11

4/32 inch

Question 12

On wet roads, you should reduce your speed by

Answer 12

one-third

Question 13

What is a common cause of tire fires?

Answer 13

Underinflated tires

Question 14

How long does it take a typical tractor-trailer to clear a double railroad track?

Answer 14

More than 15 seconds

Question 15

Are vehicle lights a primary or secondary control component?

Answer 15

Secondary component

Question 16

How long do you apply the brake peddle when testing hydraulic brakes?

Answer 16

5 seconds

Question 17

You have coupled with a semitrailer. Where should you put the front trailer supports before driving away?

Answer 17

Fully raised with the crank handle secured in its bracket

Question 18

When backing a tractor under a trailer you should

Answer 18

Always use the lowest reverse gear

Question 19

How much space should be between the upper and lower fifth wheel after coupling

Answer 19

None

Question 20

What does emergency breaking mean?

Answer 20

Responding to a hazard by slowing down the vehicle

Question 21

Placards must be

Answer 21

Placed on all four sides of vehicle

Question 22

Excessive use of the service brakes results in overheating, which can lead to:

Answer 22

Expansion of the break drums

Question 23

The braking power of the spring brakes depend on the?

Answer 23

Service brakes being in adjustment

Question 24

When is it not a good time to apply the parking brakes?

Answer 24

If the brakes are very hot (i.e., after just coming down a steep grade)

Question 25

The spring brakes used on tractors and straight trucks will bring your truck to a stop when the air pressure drops below what PSI?

Answer 25

20 PSI

Question 26

The air brake lag distance at 55 mph on dry pavement adds about:

Answer 26

32 feet to your stopping distance

Question 27

Under normal conditions, in order to engage the parking brakes, the driver must first:

Answer 27

Let the air out of the air brake system

Question 28

What causes a brake “fade”

Answer 28

Can be caused by the air brakes getting very hot

Question 29

In the event of a rear tire failure, dual rear tires help prevent what?

Answer 29

Will usually prevent a fishtail

Question 30

The total weight of a powered unit, the trailer, and the cargo is called:

Answer 30

The Gross combination weight

Question 31

Drivers of trucks and truck tractors with cargo must check that the cargo is well-secured within the first:

Answer 31

50 miles of a trip

Question 32

What is the best way to stay alert and fit to drive?

Answer 32

Sleep is the only thing that can overcome fatigue

Question 33

When starting a bus on a level surface with good traction there is often no need for:

Answer 33

The parking brake

Question 34

What should be tested while the vehicle is stopped?

Answer 34

The parking brake

Question 35

What lights cannot be checked at the same time?

Answer 35

Turn signals, brake lights, and four-way flashers

Question 36

During an inspection of hydraulic brakes, you should pump the brake pedal three times, then apply firm pressure to the pedal for five seconds. If the brakes are working properly the pedal should:

Answer 36

Not move