Download CDL Practice Test Questions and Answers for Commercial Driver's License Exam and more Exams Commercial Law in PDF only on Docsity!
MO. CDL PRACTICE TEST QUESTIONS &
ANSWERS 100% CORRECT
1. Which of the following is most likely to get stuck on raised railroad cross-
ings?
A. A low-slung car carrier.
B. A single axle tractor making a return journey empty.
C. A single axle tractor pulling a regular trailer.
D. An empty moving van.
ANS A. A low slung car carrier.
2. Is it true that as long as the engine is not over heated it is completely safe
to remove the radiator cap?
A. Yes as long as there is no overflow.
B. Yes as long as the radiator isn't damaged.
C. Yes.
D. No.
ANS D. No.
3. Which of the following should you do when confronted by an aggressive
driver?
A. Ignore rude gestures and refuse to react negatively.
B. If you can safely do it, call the police from a cell phone.
C. Avoid eye contact.
D. All the above
ANS D. All the above.
4. Retarders keep you from skidding on the road because...
A. They don't - you skid more easily with retarders.
B. They help reduce your reaction distance.
C. They give you more control over your brakes.
D. They help you control your speed.
ANS A. They don't - you skid more easily with retarders.
5. If you have an automatic transmission, when should you downshift?
A. When you start to get drowsy.
B. When you have trouble going fast enough.
C. When you feel you're driving too fast.
D. When you're going down steep grades.
ANS D. When you're going down steep grades.
6. What happens when you let the air out of hot tires?
A. This is a good idea so the extra pressure is relieved.
B. It has no effect at all.
C. It will cool them down. You will be able to continue your journey sooner.
D. This is a bad idea because when the tires cool off, the pressure will be too low.
ANS D. This is a bad idea because when the tires cool off, the pressure will be too low.
D. 8/32-inch. ANS C. 2/32-inch.
11. Which of the following should you check during your trip?
A. Pressure gauges.
B. Mirrors.
C. Cargo covers.
D. All of the above.
ANS D. All of the above.
12. Where should you place your warning devices, if you must stop on a
one-way or divided highway?
A. 50 feet, 100 feet, and 150 feet toward approaching traffic.
B. 20 feet, 50 feet, and 100 feet toward approaching traffic.
C. 100 feet, 200 feet, and 300 feet toward approaching traffic.
D. 10 feet, 100 feet, and 200 feet toward approaching traffic.
ANS D. 10 feet, 100 feet, and 200 feet toward approaching traffic.
13. What action should you do before driving while drowsy?
A. Drink energy drinks.
B. Pull off the road and get some sleep.
C. Open your vehicle winds for some fresh air.
D. Drink a cup of coffee.
ANS B. Pull off the road and get some sleep.
14. What is the most important and obvious reason to perform a vehicle
inspection, according to the state of Missouri?
A. Make sure your paint is not chipped.
B. See if your vehicle needs a wash.
C. Employer liability.
D. Safety.
ANS D. Safety.
15. How can you start moving without rolling backward?
A. Engage the clutch before removing your foot from the brake.
B. Apply the hand valve.
C. Accelerate.
D. All of the above.
ANS D. All of the above.
16. How many tiedowns are required for a 20-foot load?
A. 3 tiedowns.
B. 4 tiedowns.
C. 1 tiedown.
D. 2 tiedowns.
ANS D. 2 tiedowns
17. Which of these constitutes communicating safely?
A. It could damage the starting mechanism.
B. Someone could start and move the truck.
C. Someone could steal the truck.
D. All of the above.
ANS B. Someone could start and move the truck.
21. Which of the following is/are part(s) of the suspension system?
A. Lock rings.
B. Bearing plates.
C. Pitman arm
D. All of the above.
ANS B. Bearing plates.
22. What is the punishment for driving a CMV without a CDL?
A. Up to $5000 fine or possible jail time.
B. Minimum $5000 fine and possible jail time.
C. Up to $2000 fine and mandatory jail time.
D. Up to $5000 fine and possible jail time.
ANS A. Up to $5000 fine or possible jail time.
23. An Anti-Lock Braking System will
ANS
A. Let you drive faster.
B. Keep your brakes from locking up when you brake hard.
C. Increase a vehicle's ultimate stopping power.
D. Increase your stopping distance.
ANS B. Keep your brakes from locking up when you brake hard.
24. If you double your speed, how much more distance will it take to stop?
A. Five times as much.
B. Twice as much.
C. Four times as much.
D. Three times as much.
ANS C. Four times as much.
25. What is the first step of proper braking technique when going down a
steep downgrade?
A. Release the brakes.
B. Accelerate.
C. Release the clutch.
D. Put the engine in the proper low gear.
ANS D. Put the engine in the proper low gear.
26. Do empty trucks have the best braking?
A. Yes.
B. Yes, but only on wet surfaces.
A. Starting down a hill and finishing a curve.
B. Starting down a hill and entering a curve.
C. Starting up a hill and entering a curve.
D. Starting up a hill and finishing a curve.
ANS B. Starting down a hill and entering a curve.
31. Which of the following is/are reason(s) to back toward the driver's side?
A. You can see better, watching the vehicle rear out the side window.
B. There are always more obstacles on the right.
C. Your truck will probably pull to the right.
D. All of the above.
ANS A. You can see better, watching the vehicle rear out the side window.
32. How many red reflective triangles must you carry with you for emergen-
cies?
A. 5.
B. Depends if your truck is less than 30 feet.
C. 3.
D. 2.
ANS C. 3.
33. It has just reached freezing. Which of the following areas is slippery?
A. A shaded area.
B. A bridge.
C. Wet-looking road.
D. All of the above.
ANS D. All of the above.
34. What's the definition of a hazard?
A. A road user or road condition that could be a possible danger.
B. Something you can easily avoid.
C. Something you can safely ignore.
D. Something you must stop for.
ANS A. A road user or road condition that could be a possible danger.
35. You don't want to be a distracted driver, so you...
A. If possible, turn off your cell phone until you reach your destination.
B. Smoke, eat, and drink during straight portions of the road.
C. Have all your emotionally hard conversations in the first hour of driving.
D. Only read maps or your phone when there are no cars around you.
ANS A. If possible, turn off your cell phone until you reach your destination.
36. How can you determine if your vehicle is equipped with ABS?
A. Check if your vehicle was manufactured after March 1, 1998 (they are
required to have the panel light).
B. Check for yellow ABS malfunction lamps on the instrument panel.
39. What might happen if you swing wide to the left before you turn right?
A. You might damage your leaf springs.
B. Someone might try to pass you, on your right.
C. Someone might try to pass you, on your left.
D. All of the above.
ANS B. Someone might try to pass you, on your right.
40. How long will you lose your CDL privileges, in the state of Missouri, if you
are convicted of a second DUI offense while driving your CMV?
A. Minimum 1 year.
B. Minimum 3 years.
C. Minimum 2 years.
D. Life.
ANS D. Life.
41. The most important hand signal you should agree on with a helper is...
A. Turn up the music.
B. Go.
C. Faster.
D. Stop.
ANS D. Stop.
42. Why is it important to use a helper when backing?
A. Because you are providing a job for someone else.
B. Because you have blind spots.
C. Because people feel more comfortable when you do.
D. All of the above.
ANS B. Because you have blind spots.
43. If testing your hydraulic brakes for leaks, you should...
A. Pump the brakes 3 times, then apply pressure for 10 seconds.
B. Pump the brakes 5 times, then apply pressure for 3 seconds.
C. Apply firm pressure for 5 seconds, then pump the brakes 3 times.
D. Pump the brakes 3 times, then apply pressure for 5 seconds.
ANS D. Pump the brakes 3 times, then apply pressure for 5 seconds.
44. Which of the following determines the safe speed for going down a steep
downgrade?
A. The steepness of the grade.
B. The road conditions.
C. The total weight of the vehicle and cargo.
D. All of the above.
ANS D. All of the above.
45. Which of the following can you NOT use a B
ANSC fire extinguisher on?
A. Electrical fire.
B. Wood.
B. Check your reflection in other vehicles.
C. Adjust your mirrors to see clearly before starting, and check regularly.
D. Stop every 50 miles and check.
ANS C. Adjust your mirrors to see clearly before starting, and check regularly.
49. How many hours of sleep does the average person need per night, or risk
accumulating "sleep debt"?
A. 7 to 8 hours.
B. 6 to 8 hours.
C. 6 to 7 hours.
D. 8 to 9 hours.
ANS A. 7 to 8 hours.
50. If brakes get wet, it can cause them to...
A. Rust immediately.
B. Fall off the vehicle.
C. Apply unevenly.
D. All of the above.
ANS C. Apply unevenly.
