CDL Missouri | Study Guide ( Updated 2024 ) Complete Questions & Answers (Solved) 100% Correct
- What is the most important reason for doing a vehicle inspection?
Answer: Safety is the most important reason you inspect your vehicle, safety for yourself and other road users.
- What things should you check during a trip?
Answer: Instruments, Air pressure gauges (if have air brakes), Temperature gauges, Pressure gauges, Ammeter & Voltmeter, Mirrors, Tires, Cargo & Cargo Covers.
- Name some key steering system parts.
Answer: Steering wheel, Tie rod, Steering shaft, Hydraulic fluid reservoir, Gear box, Pitman arm, Drag link, Steering knuckle, Spindle, Power steering cylinder, Steering arm
- Name some suspension system defects.
Answer:
~Cracked or broken Spring hangers.~ Spring hangers that allow movement of the axle from its proper position.~ missing or broken leaves in any leaf spring.~ leaking shock absorbers.~ Air suspension system that are damaged or leaking.
- What three kinds of emergency equipment must you have?
Answer:
1) Spare electrical fuses 2) Fire extinguisher 3) Warning devices (3 triangle reflectors)
- What is the minimum tread depth for front tires?
Answer: 4/32" for front tires
- What is the minimum tread depth for your other tires?
Answer: 2/32" for other tires
- Name some things you should check on the front of your vehicle during a walk around
inspection.Answer: Condition of front axel, condition of steering system, condition of lights & reflectors, condition of windshield
- What should wheel bearings seals be checked for?
Answer: Leaks 1 / 2
- How many reflective triangles should you carry?
Answer: 3
- How do you test hydraulic brakes for leaks?
Answer: Pump brakes 3x, apply firmly to brake pedal for 5 seconds. Pedal should not move, if so something is wrong.
- Why put the starter switch key in your pocket during the pre-trip inspection?
Answer: So that no one can move the vehicle while you are inspecting it. To prevent thief, prevent locking oneself out.
- Why should you back towards the driver's side?
Answer: You maximize the ability to see your vehicle and the area around it.
- If stopped on a hill, how can you start moving without rolling back?
Answer: Partly engage the clutch before you take your right foot off the brake, use parking brake. Park with the ability to pull forward when you leave if you can.
- When backing why is important to use a helper?
Answer: They can direct you & see the blind spots you cannot.
- What is the most important hand sign you and your helper must agree on?
Answer: Stop
- What are 2 special conditions where you should downshift?
Answer:
1) before starting downhill 2) before entering a curve
- When should you downshift a automatic transmission?
Answer: Before starting downgrades (downhill)
- Retarders keep you from skidding when road is slippery. True or False?
Answer: -False, retarders will make you slip even more on slick roads
- What are 2 ways to know when to shift?
Answer:
1) engine speed (rpm) 2) road speed (mph)
- How far does the manual say you should look?
Answer: 12-15 seconds ahead, or 1/4 mile at 55mph
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