CDL Test Prep ( Updated 2024 ) Complete Questions & Answers (Solved) 100% Correct
- The class A CDL is for combination vehicles in excess of . pounds or the vehicle being
towed is in excess of . pounds
Answer: 26,001; 10,000
- When would you need a DOT medical card?
Answer:
When you operate a commercial vehicle with a GVWR or a GCWR of 10,001 pounds or more, if involved in interstate commerce When you operate a passenger carrying vehicle designed to transport eight or more passengers, when there is direct compensation involved When you operate any vehicle transporting hazardous materials of a quantity that would require placarding
- What is the consequence for a CDL holder found to have any alcohol in his/her system
while driving a commercial vehicle?
Answer: He or she will be placed out of service for a minimum of 24 hours
- What is the minimum allowable tread depth for all tires other than steer tires?
Answer: 2/32
nd
- What is the minimum allowable tread depth for steer tires?
Answer: 2/32
nd
- What is the most important reason for doing a vehicle inspection?
Answer: Safety
- What is the maximum allowable steering wheel play?
Answer: 10 degrees/2inches in a 20 inch wheel
- What suspension system defect will put your vehicle "out of service?"
Answer: 1/4 or more missing leaf springs
- What three types of emergency equipment should you have in your truck?-
Answer: Fire Extinguisher, 3 Triangles, Spare Fuses
- What should wheel bearing seals be checked for?
Answer: Leaks
- How many red reflective triangles should you have in your truck?
Answer: 3 1 / 2
- How do you test hydraulic brakes for leaks?
Answer: Pump 3 times and hold for 5 seconds
- Why should you put the ignition key in your pocket during the pre-trip inspection?
Answer:
For your own personal safety, so you don't get run over Keep someone else from starting/moving the vehicle
- Why should you back toward the driver's side?
Answer: You are better able to see
- If stopped on a hill, how can you start moving without rolling back?
Answer: Partially engage clutch
- What's the most important hand signal that you and a helper should agree on?
Answer: STOP
- When should you downshift?
Answer: Before hills and curves
- Retarders keep you from slipping when the road is slippery. True or False?-
Answer: False
- What is the minimum amount (in seconds) that you should be looking ahead while driving
on an open road?
Answer: 12-15 seconds
- What is the best way to see the sides and rear of your vehicle?
Answer: Mirror
- Where should your triangle reflectors be placed when stopped on a divided highway?
Answer: 10 feet behind, 100 feet behind, 200 feet behind your truck
- Where should you place your triangle reflectors on an undivided highway?-
Answer: 100 feet in front, 10 feet behind, and 100 feet behind your truck
- What 3 things add up to total stopping distance?
Answer: Perception, Reaction, Braking
- If you go twice as fast, stopping distance increases?
Answer: 4X
- / 2