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CDL GENERAL KNOWLEDGE STUDY
QUESTIONS & ANSWERS 100% CORRECT
1. When you are in a 60 foot vehicle, how much space should you maintain
in front of you at highway speeds? ANS Seven seconds
2. What is the first thing to do if your vehicle catches fire while driving?
ANS Pull off the road and park in an open area
3. The best way to put out a fire is to
ANS Stand upwind and spray the base of the fire
4. What are some causes of vehicle fires (3)
ANS * Spilled fuel
* Short circuits
* Driver smoking
5. Safe drivers must maintain space around their vehicles for the following
reasons (3) ANS * In case you must stop suddenly
* In case there are cars following too closely
* In case there is an obstacle in the road.
6. Hydroplaning can occur when you drive through water or slush. If you
experience hydroplaning you should ANS Release the accelerator and push in the clutch
7. When making a right hand turn, you should always
ANS Keep the rear of your vehicle close to the curb
8. A front wheel skid is usually caused by (3)
ANS * Driving too fast for conditions
* Lack of tread on the front tires
* Cargo improperly loaded
9. Driving at night is more dangerous because of the following (3)
ANS * Most people are less alert at night due to fatigue
* Headlights often cause glare which can blind drivers
*There are more drunk drivers at night
10. How often should you check your cargo (3)?
ANS * Within 25 miles after begin- ning a trip
* After you have driven for three hours
* After you take a break
11. An engine retarder is designed to
ANS Slow the vehicle down without using brakes
12. When should tires be replaced (3)?
ANS * When the tread separates
*When there are broken valve stems
* If the tread depth on your front tires is less than 4/32 deep
jerking. ANS True
20. Why should the exhaust system be checked
ANS A leaking exhaust system can allow poisonous fumes into the cab
21. True or False
The weight of the cargo changes a truck's height ANS True
22. When is the road likely to be more slippery?
ANS After it has been raining lightly for 30 minutes
23. When making a left hand turn, you should always
ANS Wait until you reach the center of the intersection before you turn
24. Where should you place warning devices if you must stop on the shoulder
of the road (3)? ANS * Within ten feet of the front or rear corners
* About 100 feet behind our vehicle
* In front of our vehicle
25. The following are all probably signs of a tire blowout (3)
ANS * A loud bang
*Vibration of the vehicle
* A thumping sound
26. True or False
Antifreeze is only used in colder temperatures. ANS True
27. True or False
A few beers are the same as a few shots of whiskey or glasses of wine ANS True
28. To correct a drive wheel acceleration skid, you should
ANS Stop accelerating and push in the clutch
29. When going down a hill, you should always
ANS Make sure you are in the right gear before starting down the hill.
30. What is the proper way to hold our hands on the steering wheel?
ANS With one hand on each opposite side of the wheel
31. If you are convicted of a traffic violation, you should notify your employer
within how many days, if the violation occurred in a personal or commercial vehicle? ANS 30 days
32. If you find that you are being tailgated, you should
ANS Increase the distance between you and the tailgater.
33. Before you will be able to shift gears smoothly, you must
ANS Understand the best RPM range for your vehicle
34. What are suspension systems intended to do?
ANS Keep the axles in place
35. True or False
When driving through a curve, you should hit the brakes ANS -
44. At 55 miles-per-hour, it takes about 6 seconds to stop a fully loaded truck
and the braking distance is ANS About the length of a football field or 100 yards
45. To correct a drive-wheel braking skid, you should
ANS Release the brake and steer/counter-steer
