Knowledge Test Class B - Oregon Cdl

1 . An Anti-Lock Braking System (ABS) will:

Allow you to drive faster than you would be able to otherwise. Allow you to follow other vehicles more closely than you would be able to otherwise. Allow you to drive less carefully than you would be able to otherwise. Not decrease your stopping distance. Click Here Full Cheat Sheet

2 . In a leaf spring:

Leaves should be broken. Leaves can be missing. Leaves should not be broken. Take a FREE Practice Test Now

3 . Which of the following is not an example of a distracted person that motorists should be worried about?

A driver talking to another person in a vehicle Children on the side of the road Construction workers on the side of the road A person sitting on a bench waiting for a bus Take a FREE Practice Test Now

4 . After a vehicle is started, warning lights and buzzers:

Should stay on for several minutes. Should turn off within a few seconds. Should stay on until manually turned off. Should remain on. Take a FREE Practice Test Now

5 . A vehicle must be equipped with all of the following, except:

A fire extinguisher. Spare electrical fuses. Warning devices for a parked vehicle. A flashlight. Click Here Full Cheat Sheet

6 . Why are roads especially slippery right after it begins to rain?

The water mixes with oil and grease on the road. Roads are naturally slippery. Gravel often gets washed to the middle of the lane. Tires are not usually designed to drive in rain. Take a FREE Practice Test Now

7 . What can happen if the exhaust system is not working properly?

Poisonous fumes may enter the cab. Fumes may exit the rear of the muffler system. Proper steering may be impossible. Take a FREE Practice Test Now

8 . To confirm that a trailer has ABS, you can:

Look under the trailer for wheel speed sensors coming from the back of the brakes. Look under the hood for the ABS sticker. Look at the tires. Remove a tire and look for the ABS sensor on the axle. Take a FREE Practice Test Now

9 . The air storage tanks:

Hold only enough air for one braking cycle. Hold enough air for brakes to be used several times if the compressor stops working. Do not hold air unless there is an emergency. Hold enough air for more than 1,000 braking cycles. Click Here Full Cheat Sheet

10 . What kind of force do emergency brakes use?

Air pressure Mechanical Heavy Take a FREE Practice Test Now

11 . When checking the exhaust system, it should be:

Loose. Leaking. Fastened securely. Cracked. Take a FREE Practice Test Now

12 . To prevent fatigue while driving, you should:

Keep the cab warm. Keep the cab cool. Keep the cab poorly ventilated. Close the vents. Take a FREE Practice Test Now

13 . When checking tire condition during the vehicle inspection, you should:

Ensure that the insides of the tires are more worn than the outsides of the tires. Ensure that the outsides of the tires are more worn than the insides of the tires. Ensure that the middles of the tires are more worn than the outsides of the tires. Ensure that the tires have even wear. Click Here Full Cheat Sheet

14 . Which of the following is not a type of distraction?

Physical Mental Obtuse Take a FREE Practice Test Now

15 . When approaching a construction worker who is near the road, you should:

Increase your speed. Decrease your speed. Move to the shoulder. Take a FREE Practice Test Now

16 . To make it easier to leave a parked position, you should park:

In a way that allows you to back up when exiting. In a way that allows you to pull forward when exiting. Only on the side of roadways, not in parking lots. Take a FREE Practice Test Now

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

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

18 . When using your turn signal, you should:

Signal before beginning the turn. Turn the signal off before beginning the turn. Signal only if vehicles are in front of you. Take a FREE Practice Test Now

19 . 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

20 . When passing another vehicle, you should:

Make eye contact with the driver. Assume the other driver doesn't see you. Honk your horn. Not use a turn signal. Take a FREE Practice Test Now

21 . Why do large vehicles use air brakes?

Other brake systems squeak too loudly. Air braking systems are very effective. Air brakes are complicated. Air is free. Click Here Full Cheat Sheet

22 . The use of a hand-held mobile device while driving is:

Prohibited. Acceptable if weather conditions are clear. Permitted if use is work-related. Take a FREE Practice Test Now

23 . What is the minimum permitted size of a placard?

Four square inches Seven square inches 10 ¾ square inches 32 square inches Take a FREE Practice Test Now

24 . Which of the following is not a problem?

Loose or broken exhaust pipes Loose or broken mounting brackets Exhaust parts rubbing against fuel system parts Exhaust system parts that are not leaking Take a FREE Practice Test Now

25 . Which of the following is not a sign of bad brakes?

Cracked drums Very thin pads Pads free of oil or grease Click Here Full Cheat Sheet

26 . When a vehicle is started, the coolant temperature should:

Decrease. Rise slowly. Hold steady. 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 . A truck should be parked:

So that it must be backed up to leave the space. So that it can be pulled forward to leave the space. On the grass. Take a FREE Practice Test Now

28 . To inspect slack adjusters on S-cam brakes, you need to:

Park on a hill and test the brakes. Put on gloves and push in the slack adjusters. Remove the drum and look inside. Chock the wheels and disengage the parking brake. Take a FREE Practice Test Now

29 . Rust around wheel nuts may mean:

It recently rained. The nuts are loose. The tire is not clean. Click Here Full Cheat Sheet

30 . When carrying a sealed load, a driver:

Should unseal the load to ensure safety. Should ensure the weight does not exceed weight limits. Must go through the container before driving. Take a FREE Practice Test Now

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

The driver The mechanic The owner Take a FREE Practice Test Now

32 . Improperly loaded cargo can:

Look bad to other drivers. Hurt or kill the driver during a quick stop. Make it easier to stop a vehicle. Take a FREE Practice Test Now

33 . A driver should stop after a short distance after changing a tire to:

Ensure that the wheel nuts are tight on the newly-changed tire. Ensure that there is still enough air pressure in the tire. Ensure that the correct tire was changed. Ensure that changing one tire did not damage another tire. Click Here Full Cheat Sheet

34 . When entering a foggy area, you should:

Stop on the side of the roadway. Pass other vehicles. Slow down. Use your high beam headlights. Take a FREE Practice Test Now

35 . When checking tires, finding which of the following is not a cause for concern?

Too much air pressure Too little air pressure Radial and bias-ply tires used together Tread of at least 2/32 an inch on rear tires Take a FREE Practice Test Now

36 . Before driving a power steering-equipped vehicle, you should make sure that:

The fluid is at a proper level. The hoses are connected to the battery. Any leak is small. Take a FREE Practice Test Now

37 . The suspension system:

Holds up the vehicle and its load. Keeps the load the proper distance behind the driver’s compartment. Maintains a safe distance between the vehicle and other vehicles. Lightens the load for the tires. Click Here Full Cheat Sheet

38 . During the vehicle inspection test, you must be able to do all of the following, except:

Show where the dipstick is located. Show that the engine oil is within safe operating range. Show that the oil is below the refill mark. Take a FREE Practice Test Now

39 . An applicant will be denied a hazardous materials endorsement if they:

Are a U.S. citizen. Are wanted for a misdemeanor. Are wanted for certain felonies. Already have a driver license. Take a FREE Practice Test Now

40 . Most heavy vehicles require ____ to change gears.

Double clutching Double shifting Triple clutching Triple shifting Take a FREE Practice Test Now

41 . When backing with a trailer, you should begin by:

Turning the steering wheel in the direction of the turn. Turning the steering wheel in the direction opposite of the turn. Turning the wheel as sharply as possible. Click Here Full Cheat Sheet

42 . When approaching a curve during the on-road driving test, you must do all of the following, except:

Check traffic thoroughly in all directions. Reduce your speed before entering the curve. Keep your vehicle in its lane. Steadily use the brakes throughout the curve. Take a FREE Practice Test Now

43 . During a pre-trip inspection, belts should be:

Left alone and not inspected. Checked for tightness. Inspected, but only about once a month. Take a FREE Practice Test Now

44 . During the on-road driving test, you must do all of the following, except:

Wear your safety belt. Obey all traffic laws. Complete the test without a moving violation. Obey all traffic signs and signals, but only if other traffic is present. Take a FREE Practice Test Now

45 . Brake fading is caused when:

Brakes are not used often enough. Brakes overheat. Brakes are too cold. Brakes are wet. Click Here Full Cheat Sheet

46 . Pre-trip inspections:

Should never be done the same way two times in a row. Should always be done in the same order. Do not need to be done if the driver thinks the vehicle is in good operating order. Take a FREE Practice Test Now

47 . The radiator cap:

Should not be removed when the coolant is hot. Can be removed when the coolant is hot. Should be cool to the touch under normal driving conditions. Take a FREE Practice Test Now

48 . Eating while driving:

Is a good way to maximize time. Is encouraged on long trips. Creates a distraction for the driver. Is mandatory so cargo is not left unsupervised. Take a FREE Practice Test Now

49 . After starting the engine as part of a pre-trip inspection, the driver should:

Listen for unusual noises. Rev the engine. Deactivate the parking brake. Click Here Full Cheat Sheet

50 . What is black ice?

A thick layer of ice on the road A thin layer of ice on the road Ice that is black from debris on the road Ice that is easily seen Take a FREE Practice Test Now