Knowledge Test Class B - Arizona Cdl

1 . A driver should:

Always use turn signals when changing lanes. Only use turn signals if there is a vehicle next to them. Not use a turn signal if a lane change is obvious. Click Here Full Cheat Sheet

2 . Texting while operating a CMV is:

Illegal. Acceptable on rural roads. Acceptable for drivers contacting their employers. Take a FREE Practice Test Now

3 . When entering traffic, a large vehicle usually needs:

Less space than is needed for a car. About the same amount of space as is needed for a car. More space than is needed for a car. Take a FREE Practice Test Now

4 . Eating while driving:

Is a good way to maximize your time. Is encouraged during long trips. Is a distraction to the driver. Take a FREE Practice Test Now

5 . The ____ between an air compressor and reservoir tank prevents air from escaping if the air compressor has a leak.

Slack adjuster One-way check valve Tractor protection valve Click Here Full Cheat Sheet

6 . When traveling long distances, you should:

Take rest breaks. Drive as fast as possible. Drive through the night. Take a FREE Practice Test Now

7 . Friction in an S-cam brake is caused when the brake shoes and linings:

Press against the outside of the brake drum. Press against the inside of the brake drum. Push against each other. Take a FREE Practice Test Now

8 . Blocking a load:

Is dangerous and should never be done. Is essential to preventing cargo from moving in transit. Is only done with liquid loads. Take a FREE Practice Test Now

9 . What is traction?

Friction between the tires and road Tires' rates of rotation The length of time needed to activate the brakes Click Here Full Cheat Sheet

10 . What is the average driver’s reaction time?

1/16 of a second 1/8 of a second 3/4 of a second Take a FREE Practice Test Now

11 . Manual air tank drains should be:

Opened to drain the tanks after each day. Left open while driving. Sealed with glue. Take a FREE Practice Test Now

12 . On a curve, the posted speed limit:

Is safe to be driven in any vehicle. Can still permit a vehicle to tip over. Is understood to be the minimum legal speed limit. Take a FREE Practice Test Now

13 . An Anti-Lock Braking System (ABS):

Is not available for vehicles with air brakes. Is not helpful in most driving situations. Can help you maintain control when braking. Click Here Full Cheat Sheet

14 . A low air pressure warning signal should activate:

When tank pressure falls below 120 psi. When tank pressure falls below 60 psi. When tank pressure falls below 10 psi. When tank pressure falls below 5 psi. Take a FREE Practice Test Now

15 . If driving a new vehicle, you should familiarize yourself with the controls:

Before you start driving. As you drive. If you feel like you need to. Take a FREE Practice Test Now

16 . Cargo being transported should be checked:

Only before the trip. Before the trip and again within the first 50 miles of the trip. Only by the loading personnel. Take a FREE Practice Test Now

17 . Drowsy driving is most common during:

The night. The early morning. The mid-afternoon. Click Here Full Cheat Sheet

18 . Which of the following is acceptable if found during a pre-trip inspection?

Mismatched tire sizes Tread of 3/32 of an inch in the grooves of the front tires Tires manufactured by different makers Take a FREE Practice Test Now

19 . One way to prevent fatigue on long trips is to:

Take frequent breaks. Text while driving. Drink caffeine. Take a FREE Practice Test Now

20 . The two indicators that determine when you should upshift are:

Engine speed and road speed. Other trucks and driving conditions. Timing and road position. Take a FREE Practice Test Now

21 . What color malfunction lamps do vehicles equipped with ABS have?

Green Yellow Blue Click Here Full Cheat Sheet

22 . Texting while driving should:

Only be done on straightaways. Only be done in curves. Not be done. Take a FREE Practice Test Now

23 . Headache racks:

Are illegal. Help protect the driver from the cargo. Allow for increased cargo space. Take a FREE Practice Test Now

24 . If your vehicle has air brakes, you must have ____ endorsement to operate the vehicle.

A tank A passenger An air brakes Take a FREE Practice Test Now

25 . If other vehicles are having a difficult time getting around your truck on a road with two or more lanes, you should:

Speed up. Drive on the shoulder. Use the right lane. Click Here Full Cheat Sheet

26 . If a tire fails, you should:

Use the brakes. Stay off the brakes. Swerve. Take a FREE Practice Test Now

Study tip: Reduce your study time from hours to minutes with a DMV exam “Cheat Sheet” 99.2% of people who use the cheat sheet pass the FIRST TIME Click Here Full Cheat Sheet

27 . Hanging meat as cargo is usually:

Easy to transport. Dangerous, due to the possible scent. Unstable. Take a FREE Practice Test Now

28 . In low temperatures, bridges usually freeze:

After other parts of the roadway. Before other parts of the roadway. At the same time as other parts of the roadway. Take a FREE Practice Test Now

29 . If you identify a distracted driver on the road, you should:

Tailgate them. Flash your lights at them. Give them plenty of space. Click Here Full Cheat Sheet

30 . You should always be able to stop within:

10 feet of your vehicle. 100 feet of your vehicle. Your view of the road ahead. Take a FREE Practice Test Now

31 . On low bridges:

Height warnings must always be posted. Height warnings must be posted at least twice. Height warnings may be posted, but do not have to be. Take a FREE Practice Test Now

32 . Bridges usually:

Do not freeze. Have heaters to prevent them from freezing. Freeze before other surfaces. Take a FREE Practice Test Now

33 . If a worker is present in a work zone, you should:

Continue driving at the posted speed limit. Slow to a speed under the posted speed limit. Drive in the grass. Click Here Full Cheat Sheet

34 . When traction is poor, a driver should accelerate especially slowly:

Because it is always good to accelerate slowly. To keep from losing control of the vehicle. To keep from accelerating faster than the vehicle ahead. Take a FREE Practice Test Now

35 . If there is ice on the front of your side mirror:

You should exit the roadway. You can expect ice to be on the roadway. There will not be ice on the roadway. Take a FREE Practice Test Now

36 . When traveling on a downgrade, your vehicle will:

Slow down. Travel at the same rate as on level roadway. Speed up. Take a FREE Practice Test Now

37 . When driving, how can you maintain alertness?

Keep cool by using the air conditioner or opening a window. Eat a lot of heavy foods. Avoid stopping. Click Here Full Cheat Sheet

38 . When experiencing cold weather, be sure to check your vehicle's alcohol evaporator:

Every three hours. Every day. Every other week. Take a FREE Practice Test Now

39 . What is the number one cause of death and injury in a work zone?

Drivers speeding Slow drivers Animals crossing the road Take a FREE Practice Test Now

40 . While driving, a driver should:

Not be concerned with what is happening on the sides of their vehicle. Be concerned with what is happening on all sides of the vehicle. Not be concerned with what is happening behind the vehicle. Take a FREE Practice Test Now

41 . After a tire has been changed, the driver should stop after a short distance of driving to:

Recheck the tightness of the lug nuts. See if rocks have gotten into the tread. Polish the tire. Click Here Full Cheat Sheet

42 . An air compressor governor controls:

When the air compressor pumps air into the air storage tanks. How fast air is pumped into the air storage tanks. The temperature of the air pumped into the air storage tanks. Take a FREE Practice Test Now

43 . Which of the following is an indication of standing water on the roadway?

Tire splashes Portions of the pavement that are dry Leaves on the road Take a FREE Practice Test Now

44 . To affect a vehicle, ABS:

Must be on all axles. Must be on the rear axle. Can be on as few as one axle. Take a FREE Practice Test Now

45 . What does an air compressor do in an air brake system?

It pumps air into the air storage tanks. It fills the tires. It moves air to the back of the truck. Click Here Full Cheat Sheet

46 . The leading factor resulting in death and injury in work zones is:

Speeding. Stopping. Under-inflated tires. Take a FREE Practice Test Now

47 . Driving at night is usually:

More difficult than driving during the day. Simpler than driving during the day. Discouraged. Take a FREE Practice Test Now

48 . When an engine is running, an acceptable oil pressure would be:

10 psi. 50 psi. 110 psi. Take a FREE Practice Test Now

49 . Which of the following is not an example of a distracted person who should concern motorists?

A driver talking to a passenger in their vehicle A person sitting on a bench waiting for a bus A construction worker on the side of the road Click Here Full Cheat Sheet

50 . To make your vehicle more visible during the day, you should:

Use your low beam headlights. Use your high beam headlights. Use your clearance lights. Take a FREE Practice Test Now