Commercial Drivers License (General Knowledge) : Basic Truck-specific Driving Procedures

Study concepts, example questions & explanations for Commercial Drivers License (General Knowledge)

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Example Questions

Example Question #1 : Shifting Gears

In order to correctly and safely shift gears, you should NOT _________________.

Possible Answers:

shift into a higher gear while pushing in the clutch

accelerate before initially pressing in the clutch

release the clutch

accelerate while releasing the clutch

Correct answer:

accelerate before initially pressing in the clutch

Explanation:

The basics of shifting gears are as follows: release the accelerator, push the clutch, shift into neutral, release the clutch, let the engine and gears slow sufficiently, then push in the clutch and shift into the appropriate higher gear, release the clutch and LAST press the accelerator. Pressing your accelerator should always be the last step in this process.

Example Question #7 : Safety

The primary function of an Antilock Braking System is to _________________.

Possible Answers:

allow a vehicle to brake suddenly while shifting gears

allow for smoother shifting of gears

keep a vehicles brakes from locking up when the driver overbrakes or has to brake suddenly

increase the raw power of a vehicles braking system

Correct answer:

keep a vehicles brakes from locking up when the driver overbrakes or has to brake suddenly

Explanation:

The only purpose listed that is true of ABS is that they are designed to prevent a vehicles brakes from locking. Obviously this is more important for large or heavy vehicles, whose brakes lock more easily than other vehicles, and which pose a much greater threat when moving across a road with locked brakes.

Example Question #8 : Safety

Which of the following is NOT a valid indicator that your vehicle is equipped with an Antilock Braking System?

Possible Answers:

A manufacture date from AFTER March 1, 1998

The presence of a yellow malfunction lamp on the panel

The presence of a speedometer with both miles and kilometers per hour

The presence of wheel speed sensor wires emanating from the back of your brakes

Correct answer:

The presence of a speedometer with both miles and kilometers per hour

Explanation:

The main indicator that your vehicle is equipped with an ABS is the yellow malfunction light in your instrument panel. If your vehicle is to code, and it was produced after March 1998 it should be equipped with an ABS. Also, you can always just physically get out of the cab and look at the back of your brakes for the telltale presence of wheel speed sensor wires. Your speedometer indicating both miles and kilometers per hour is not related to your ABS (it may mean your truck was manufactured in Canada).

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