CDL General Knowledge Test 15 – Classic Mode

This is CDL General Knowledge Test 15 in our original Classic Mode. Simply click in your answer to each CDL practice test question. When you’re finished, check your score and results. You can reset the test and retake it as needed.

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1. Which of these statements about cold weather driving is true?

A In snow storms, wiper blades should be adjusted so that they do not make direct contact with the windshield.
B Exhaust system leaks are less dangerous in cold weather.
C There is no need to worry about engine overheating when the weather is very cold.
D Windshield washer antifreeze should be added to the washer reservoir.

2. The most important reason for being alert to hazards is so:

A You will have time to plan your escape if the hazard becomes an emergency.
B Accident reports will be accurate.
C Law enforcement personnel can be called.
D You can help impaired drivers.

3. Which of these is a good rule to follow when using a fire extinguisher?

A stay downwind of the fire.
B Keep it as close to the fire as possible.
C Aim at the base of the fire.
D All the above.

4. Is it legal to drive with one fourth of a vehicles leaf springs broken or missing?

A It doesn't make any difference as long as you drive slow.
B Yes
C No
D None of the above.

5. Dry bulk tanks require special care because:

A The load can shift
B They have a high center of gravity
C Both of the above
D None of the above

6. You are checking your tires for a pre trip inspection. Which of these statements is true?

A Tires of mismatched sizes should not be used on the same vehicle.
B Radial and bias-ply tires can be used together on the same vehicle.
C Dual tires should be touching each other.
D 2/32 inch tread depth is safe for the front tires.

7. The first step to take if your vehicle catches fire while driving is:

A Head for the nearest service station.
B Get the vehicle off the road and stop in an open area.
C Park in the shade of a building.
D Immediately open the door and jump out.

8. Which of these statements about double clutching and shifting is true?

A If you miss a gear while up-shifting, you must bring the vehicle to a stop.
B Double clutching should only be used with a heavy load
C You can use the tachometer to tell you when to shift.
D Double clutching should not be used when the road is slippery.

9. The center of gravity of a load:

A Is only a problem if the vehicle is overloaded.
B Should be kept as high as possible.
C Can make a vehicle more likely to tip over on curves.
D All of the above.

10. You are testing the stopping action of service brakes on a hydraulic system. Which of these can mean there is a problem?

A The brake pedal goes to the floor
B Stopping action is delayed.
C The vehicle pulls to one side when the brake pedal is pressed.
D All of the above.

End of Test #15

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