Knowledge Test Class B - Alabama Cdl

1 . The heavier the vehicle:

The less important the brakes become. The harder the brakes need to work. The quieter the brakes will sound. Click Here Full Cheat Sheet

2 . Which of the following is a good rule to follow when making a turn?

Honk your horn. Use your arms to get the attention of other drivers. Turn off your turn signal before entering the turn to avoid confusing other drivers. Signal early. Take a FREE Practice Test Now

3 . How can a driver maintain alertness while driving?

Stay fit and healthy Keep the cab warm Eat heavy foods Take a FREE Practice Test Now

4 . Which of the following is not acceptable emergency equipment?

Three red reflective triangles Six fuses Three liquid burning flares Four yellow squares Take a FREE Practice Test Now

5 . Rolling backward when beginning to accelerate is dangerous because:

The transmission may be damaged. The truck is not made to go backwards. You may hit a vehicle behind you. Click Here Full Cheat Sheet

6 . If you are driving so slowly that you could impede other vehicles, you should:

Stay in the left lane. Drive with your emergency flashers activated. Not use any lights. Wave an arm out of your window. Take a FREE Practice Test Now

7 . To help your vehicle be seen by others:

Headlights should be clean. Headlights should be turned off during the day. Headlights should be covered with grease. Headlights should only be used in the rain. Take a FREE Practice Test Now

8 . Which type of brakes do most heavy-duty vehicles have?

Air brakes Solid brakes Liquid brakes Gravity brakes Take a FREE Practice Test Now

9 . Items on a flatbed:

Are usually heavy enough to not need to be strapped down. Should not be strapped down if you are driving more slowly than 35 mph. Must always be secured. Click Here Full Cheat Sheet

10 . How should you brake if your vehicle's ABS is not working?

Brake normally, as you will still have functioning brakes. Pump the brake repeatedly. Press the brake pedal down as hard as you can. Take a FREE Practice Test Now

11 . What is the purpose of a vehicle inspection report?

It tells the motor carrier about problems that may need to be fixed. It ensures that the vehicle is inspected regularly. It keeps drivers accountable for inspecting their vehicles. It provides a plan for the next five trips. Take a FREE Practice Test Now

12 . What is often found in compressed air?

Water Cardboard Brake fluid Take a FREE Practice Test Now

13 . Cargo inside a trailer:

Does not need to be secured. Should be stacked no more than three feet high. Should be secured to prevent movement. Click Here Full Cheat Sheet

14 . The two markings on a front brake limiting valve usually read:

"Normal" and "slippery." "Low" and "high." "Left" and "right." Take a FREE Practice Test Now

15 . In a vehicle with dual parking control valves, once air pressure is lost and the spring brakes come on:

You will be unable to move the vehicle. A separate air tank can be used to release the spring brakes for a short period of time. You can use the spring brakes to continue driving normally. The air tanks will automatically refill to a safe air pressure level. Take a FREE Practice Test Now

16 . In a dual air brake system, air pressure should build from 85 to 100 psi within ____ seconds.

25 10 45 Take a FREE Practice Test Now

17 . If you must drive in reverse, it is helpful to:

Drive as fast as possible and get it over with. First exit the truck and walk the path to look for obstacles. Use only the passenger side mirror. Stick your head out the window and look backward. Click Here Full Cheat Sheet

18 . A Class 1 hazardous material is:

An explosive. Radioactive. Corrosive. Take a FREE Practice Test Now

19 . Slow down and be extra careful:

When traveling in normal traffic. When driving on dry pavement. When approaching a work zone. Take a FREE Practice Test Now

20 . When making tight maneuvers, it is important for a driver to:

Open their door for a better look. Use their mirrors. Flash their headlights. Take a FREE Practice Test Now

21 . What is removed when an air tank is drained?

Water and oil Ammonia Liquid cleaners Click Here Full Cheat Sheet

22 . During a trip, gauges are:

Often misleading. The only way a driver can learn of potential trouble with the vehicle. A way to learn of potential trouble with the vehicle. Take a FREE Practice Test Now

23 . What should you do if the braking system cannot build up hydraulic pressure?

Upshift. Downshift. Hold the brake pedal down as far as it will go. Take a FREE Practice Test Now

24 . Convex mirrors:

Cannot be used on vehicles transporting hazardous materials. Can replace flat mirrors. Can be helpful to see a wider area. Are illegal to be used in most states. Take a FREE Practice Test Now

25 . If the safety relief valve in the air brake system releases air:

The compressor needs more air. There is something wrong with the brakes. You may continue driving. Click Here Full Cheat Sheet

26 . When driving through fog, a driver should:

Use high beam headlights. Use low beam headlights. Run the windshield wipers. Drive on the shoulder. 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 . During a vehicle inspection, ensure that lug nuts are all of the following, except:

Free of cracks. Free of distortions. Loose. Free of rust. Take a FREE Practice Test Now

28 . How can you avoid becoming drowsy on a trip?

Get about three hours of sleep beforehand. Plan ahead, including stopping points. Do not build exercise into your daily routine. Schedule the trip at night. Take a FREE Practice Test Now

29 . How many daily hours of sleep does an adult need to maintain alertness?

Six to seven Seven to eight Eight to nine Click Here Full Cheat Sheet

30 . When changing lanes:

You should move your vehicle quickly. You should move your vehicle slowly. The move should be made with a jerking motion. You do not need to use a turn signal. Take a FREE Practice Test Now

31 . When transporting cargo, drivers must check the securement of the cargo every:

10 miles. 150 miles. 500 miles. Take a FREE Practice Test Now

32 . If a load is 40 feet long, it should be secured by at least ____ tie-downs.

Two Three Four Take a FREE Practice Test Now

33 . Who is responsible for the safe operation of a vehicle?

The driver The mechanic The owner Click Here Full Cheat Sheet

34 . Your horn should be used to:

Tell other drivers that you are angry. Warn other drivers that you are near. Frighten other drivers. Take a FREE Practice Test Now

35 . If a driver begins to feel fatigued while driving, they should:

Continue driving. Drink coffee. Stop and rest. Drive faster to finish the trip more quickly. Take a FREE Practice Test Now

36 . How is water and compressor oil removed from the bottom of an air storage tank?

The water and oil are siphoned out of the tank. A drain valve is opened to remove the water and oil from the tank. The water and oil are removed automatically as the brakes are used. A sponge is used to soak up the water and oil. Take a FREE Practice Test Now

37 . If you are being tailgated, you should:

Drive on the shoulder. Pull off the roadway. Drive faster. Allow the vehicle to pass. Click Here Full Cheat Sheet

38 . What can change the height of a vehicle?

Color Length Weight Number of windows Take a FREE Practice Test Now

39 . The best way to avoid glare at night from oncoming vehicles is to:

Wear sunglasses. Close your eyes as vehicles approach. Look to the right side of road. Use your high beams. Take a FREE Practice Test Now

40 . A cardboard box on the roadway:

Should be expected to be on the roadway. Is usually empty and harmless. Could contain a heavy object that could damage vehicles. Take a FREE Practice Test Now

41 . The application pressure gauge:

Shows how much air pressure is being applied to the brakes. Shows the temperature of air being used in the braking system. Shows the pressure of the air coming from the compressor. Shows the number of times the brakes have been used. Click Here Full Cheat Sheet

42 . A stopped bus:

Is not a cause for concern since it is stopped. Is only a concern if passengers are exiting the bus. Is a concern whether or not passengers are visible. Take a FREE Practice Test Now

43 . During an applied leakage test, the maximum leakage rate for a single vehicle with air brakes is:

3 psi in one minute. 6 psi in one minute. 8 psi in one minute. 4 psi in one minute. Take a FREE Practice Test Now

44 . When starting a vehicle, the coolant temperature gauge should:

Not change from its original position. Gradually rise to the normal operating range. Jump quickly to the normal operating range. Flash until it reaches the normal operating range. Take a FREE Practice Test Now

45 . Front brake limiting valves were intended to:

Prevent the front tires from skidding. Prevent the front tires from overheating. Create equal brake usage. Remove uncertainty when applying the brakes. Click Here Full Cheat Sheet

46 . ____ is a thin layer of ice that forms on road surfaces.

White ice Black ice Soft ice Sharp ice Take a FREE Practice Test Now

47 . When changing lanes, you should not:

Use your turn signal. Check your mirrors. Use your cell phone. Take a FREE Practice Test Now

48 . If the safety relief valve in the air brake system releases air:

The compressor needs more air. The air pressure has become too high. The brakes are fully operational. Take a FREE Practice Test Now

49 . When driving at night, you should do all of the following, except:

Make sure you are rested. Make sure your glasses are clean. Wear sunglasses. Click Here Full Cheat Sheet

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

Follow their vehicle closely. Try to get their attention. Give them plenty of room. Flash your lights at them. Take a FREE Practice Test Now