CDL - General Knowledge, Combinations, Air Brakes
1. Used when it is safe and legal to do so.: High beams should be:
2. It may be a slow moving vehicle: You can see a marking on a vehicle ahead of
you, the marking is a red triangle with an orange center what does the marking
mean?
3. Valve clearance: Which of these is not part of the pre-trip inspection of the
engine compartment?
4. Stop driving as soon as you can safely do so: The road you are driving on
becomes very due to glare ice. Which of these is a good thing to do in such a
situation?
5. 35 mph: You are driving a vehicle that could be driven at 55mph on an open
road. But traffic is heavy and other vehicles drive at the speed of 35mph, though
the speed limit is 55 mph. The safest speed for your vehicle is more likely to be:
6. Turning the wheel back in the other direction after steering to avoid a traffic
emergency: What is countersterring?
7. You should avoid backing whenever you can.: Which of these statements
about backing a heavy vehicle is true?
8. Release the brake when you are 5 mph below your safe speed, then let your
speed come back up to your safe speed and repeat again, (bring speed
down 5 mph below your safe speed): Which of these best describe how to use
the brake pedal on a steep downhill grade?
9. When turning, you should signal early: Which of these statements about using
turn signals is true?
10. You can use the tachometer to tell you when to shift: Which of these
statements about double clutching and shifting is true?
11. You should choose a speed that lets you stop within the distance that
you can see ahead.: Which of these statements about speed management is
true? 12. Can cause the driver wheels to skid when they have poor traction:
Retarders:
13. Stop braking, turn quickly, then countersteer: To correct a drive wheel
braking skid, you should:
14. Maintain a speed 5-10 mph under the posted speed limit: When exiting or
entering on a curved freeway ramp, you should:
15. Empty truck: Which of the following vehicles will have the longest stopping
distance?
16. : How many red reflective triangles are you required to carry?
17. 50 miles: You are required to inspect your truck within how many miles after
beginning the trip?
18. Both trailer and tractor: There are two types of jackknife, they are:
, CDL - General Knowledge, Combinations, Air Brakes
19 .04: The BAC for commercial drivers to be considered intoxicated when driving
a commercial vehicle is:
20. In your pocket: Where should the ignition key be during the pre-trip inspection?
21. Poor traction on drive wheels: When loading a trailer, if the cargo is loaded
all to the rear , it may result in:
22. To communicate your intention to other motorists: Communication means
23. At least one-year suspension of your CDL: If you are convicted for driving
under the influence while driving a commercial vehicle, and this is your first
offense, You most likely will get:
24. Be placed out of service for 24 hours.: If you are stopped at a roadside rest
area and found to have BAC (blood alcohol concentration) of 0.02 you will:
25. If you double your speed, stopping distance will be increased by 4 times:
Which of the following statements about speed management is true?
26. Look for an escape ramp or escape route: You are traveling down a long,
steep hill. Your brakes get so hot that they fail. What should you do?
27. Can make a vehicle more likely to tip over on curves if it is high.: The center
of gravity of a load:
28. 10: To prevent a load from shifting, there should be at least one tie down for
every ___ feet of cargo
29. Stop driving and fix the problem: While driving, ice builds up on your wipers
and they no longer clean the windshield. You should:
30. Pump the brake pedal to generate pressure: When the hydraulic brakes fail
while you are driving, the system will not build up pressure and the brake pedal
will feel spongy or goes to the floor. What should you do ?
31. Vibration: Which may be a sign of tire failure?
32. Select the gear,which will keep your vehicle to a safe speed on a deep
downgrade.: To prevent brake fade you should
33. The nature of the cargo makes a stop mandatory under state or federal
regulations: A full stop is required at a railroad crossing when:
34. 500: When driving at night you should use your high beams when oncoming
traffic is not within ____ feet?
35. Watch for sharp pavement drop offs: When driving through the work zones,
you should
36. Always dangerous: Backing of a commercial vehicle is:
37. Turn on your four-way emergency flashers to warn others.: When you are
parked on the side of the road at night you must:
, CDL - General Knowledge, Combinations, Air Brakes
38. Within 500 feet behind you: You must stop on a hill or curve on a two-lane-
two-way road. How far should you place reflective triangles? 39. Anti-lock
brakes: Stab braking should not be used on vehicles with 40 It is less
dangerous to drive onto the shoulders than to make a collision.:
Sometimes you need to leave a road to avoid a hazard or emergency. When
you do, you should keep in mind, that:
41. Cold steering: Which of the following is NOT a characteristic of tire failure?
42. Are caused by going too fast or trying to stop too quickly: Most skids:
43. Increase your following distance: In bad weather many drivers tailgate large
vehicles. What should you do?
44. Exhaust:: Which of the following systems should receive extra attention during
winter weather inspection?
45. It bleeds making the road surface slippery.: What happens to tar on the road
pavement during hot weather?
46. Park the truck until the fog disappears.: What is the best advice for drivers
when a heavy fog occurs?
47. Tires tread depth: In mountain driving you will have to use a lower gear to drive
safely on a grade. Which of these does NOT affect your choice of gear?
48. Know your escape ramp locations on your way: What should you do before
driving in mountains?
49. Should be used by any driver who loses braking power: Escape ramps:
50. If you have a cellular phone or CB radio you should notify the authorities
before exiting the vehicle: Which of these is true about notifying the authorities
after an accident occurs?
51. Wait for fire fighters: If you are not sure what to use to put out a hazardous
material fire you should?
52. Tire damage: Which of these is NOT a danger of a rough acceleration?
53. Turn signals brake lights and four-way flashers: Which of these lights cannot
be checked at the same time?
54. Not move: You are inspecting hydraulic brakes . You should pump the brake
pedal three times then apply firm pressure to the pedal for five seconds. If the
brakes are working properly, the pedal should:
55. 50: Drivers of trucks and tractor-trailers with cargo must check that the cargo is
well secured within the first ___ miles of the trip.
56. Parking brakes: When starting a bus on level surface with good traction there
is often no need for::
1. Used when it is safe and legal to do so.: High beams should be:
2. It may be a slow moving vehicle: You can see a marking on a vehicle ahead of
you, the marking is a red triangle with an orange center what does the marking
mean?
3. Valve clearance: Which of these is not part of the pre-trip inspection of the
engine compartment?
4. Stop driving as soon as you can safely do so: The road you are driving on
becomes very due to glare ice. Which of these is a good thing to do in such a
situation?
5. 35 mph: You are driving a vehicle that could be driven at 55mph on an open
road. But traffic is heavy and other vehicles drive at the speed of 35mph, though
the speed limit is 55 mph. The safest speed for your vehicle is more likely to be:
6. Turning the wheel back in the other direction after steering to avoid a traffic
emergency: What is countersterring?
7. You should avoid backing whenever you can.: Which of these statements
about backing a heavy vehicle is true?
8. Release the brake when you are 5 mph below your safe speed, then let your
speed come back up to your safe speed and repeat again, (bring speed
down 5 mph below your safe speed): Which of these best describe how to use
the brake pedal on a steep downhill grade?
9. When turning, you should signal early: Which of these statements about using
turn signals is true?
10. You can use the tachometer to tell you when to shift: Which of these
statements about double clutching and shifting is true?
11. You should choose a speed that lets you stop within the distance that
you can see ahead.: Which of these statements about speed management is
true? 12. Can cause the driver wheels to skid when they have poor traction:
Retarders:
13. Stop braking, turn quickly, then countersteer: To correct a drive wheel
braking skid, you should:
14. Maintain a speed 5-10 mph under the posted speed limit: When exiting or
entering on a curved freeway ramp, you should:
15. Empty truck: Which of the following vehicles will have the longest stopping
distance?
16. : How many red reflective triangles are you required to carry?
17. 50 miles: You are required to inspect your truck within how many miles after
beginning the trip?
18. Both trailer and tractor: There are two types of jackknife, they are:
, CDL - General Knowledge, Combinations, Air Brakes
19 .04: The BAC for commercial drivers to be considered intoxicated when driving
a commercial vehicle is:
20. In your pocket: Where should the ignition key be during the pre-trip inspection?
21. Poor traction on drive wheels: When loading a trailer, if the cargo is loaded
all to the rear , it may result in:
22. To communicate your intention to other motorists: Communication means
23. At least one-year suspension of your CDL: If you are convicted for driving
under the influence while driving a commercial vehicle, and this is your first
offense, You most likely will get:
24. Be placed out of service for 24 hours.: If you are stopped at a roadside rest
area and found to have BAC (blood alcohol concentration) of 0.02 you will:
25. If you double your speed, stopping distance will be increased by 4 times:
Which of the following statements about speed management is true?
26. Look for an escape ramp or escape route: You are traveling down a long,
steep hill. Your brakes get so hot that they fail. What should you do?
27. Can make a vehicle more likely to tip over on curves if it is high.: The center
of gravity of a load:
28. 10: To prevent a load from shifting, there should be at least one tie down for
every ___ feet of cargo
29. Stop driving and fix the problem: While driving, ice builds up on your wipers
and they no longer clean the windshield. You should:
30. Pump the brake pedal to generate pressure: When the hydraulic brakes fail
while you are driving, the system will not build up pressure and the brake pedal
will feel spongy or goes to the floor. What should you do ?
31. Vibration: Which may be a sign of tire failure?
32. Select the gear,which will keep your vehicle to a safe speed on a deep
downgrade.: To prevent brake fade you should
33. The nature of the cargo makes a stop mandatory under state or federal
regulations: A full stop is required at a railroad crossing when:
34. 500: When driving at night you should use your high beams when oncoming
traffic is not within ____ feet?
35. Watch for sharp pavement drop offs: When driving through the work zones,
you should
36. Always dangerous: Backing of a commercial vehicle is:
37. Turn on your four-way emergency flashers to warn others.: When you are
parked on the side of the road at night you must:
, CDL - General Knowledge, Combinations, Air Brakes
38. Within 500 feet behind you: You must stop on a hill or curve on a two-lane-
two-way road. How far should you place reflective triangles? 39. Anti-lock
brakes: Stab braking should not be used on vehicles with 40 It is less
dangerous to drive onto the shoulders than to make a collision.:
Sometimes you need to leave a road to avoid a hazard or emergency. When
you do, you should keep in mind, that:
41. Cold steering: Which of the following is NOT a characteristic of tire failure?
42. Are caused by going too fast or trying to stop too quickly: Most skids:
43. Increase your following distance: In bad weather many drivers tailgate large
vehicles. What should you do?
44. Exhaust:: Which of the following systems should receive extra attention during
winter weather inspection?
45. It bleeds making the road surface slippery.: What happens to tar on the road
pavement during hot weather?
46. Park the truck until the fog disappears.: What is the best advice for drivers
when a heavy fog occurs?
47. Tires tread depth: In mountain driving you will have to use a lower gear to drive
safely on a grade. Which of these does NOT affect your choice of gear?
48. Know your escape ramp locations on your way: What should you do before
driving in mountains?
49. Should be used by any driver who loses braking power: Escape ramps:
50. If you have a cellular phone or CB radio you should notify the authorities
before exiting the vehicle: Which of these is true about notifying the authorities
after an accident occurs?
51. Wait for fire fighters: If you are not sure what to use to put out a hazardous
material fire you should?
52. Tire damage: Which of these is NOT a danger of a rough acceleration?
53. Turn signals brake lights and four-way flashers: Which of these lights cannot
be checked at the same time?
54. Not move: You are inspecting hydraulic brakes . You should pump the brake
pedal three times then apply firm pressure to the pedal for five seconds. If the
brakes are working properly, the pedal should:
55. 50: Drivers of trucks and tractor-trailers with cargo must check that the cargo is
well secured within the first ___ miles of the trip.
56. Parking brakes: When starting a bus on level surface with good traction there
is often no need for::
