CDL Pennsylvania | 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 for other road users.
- What things should you check during a trip?
Answer:
Instruments.• Air pressure gauge (if you have air brakes).• temperature gauges.• Pressure gauges.• Ammeter/voltmeter.• mirrors.• tires.• cargo, cargo covers.• Lights.• Etc.
- What are the key steering system parts.
Answer:
Steering wheel Tie rod Steering Shaft Steering Arm Power steering cylinder
- Name some suspension system defects.
Answer: Spring hangers that allow movement of axle from proper position.
• cracked or broken spring hangers.• missing or broken leaves in any leaf spring. If one-fourth or more are missing, it will put the vehicle "out of service," but any defect could be dangerous.• Broken leaves in a multi-leaf spring or leaves that have shifted so they might hit a tire or other part.• Leaking shock absorbers.• torque rod or arm, u-bolts, spring hangers or other axle positioning parts that are cracked, damaged or missing.• Air suspension systems that are damaged and/or leaking.• Any loose, cracked, broken or missing frame members. 1 / 2
- What three kinds of emergency equipment must you have?
Answer: Fire extinguish- er(s).
• Spare electrical fuses (unless equipped with circuit breakers).• Warning devices for parked vehicles (for example, three (3) reflective warning triangles).
- What is the minimum tread depth for front tires? For other tires?
Answer: Front 4/32 Other 2/32
- Name some things you should check on the front of your vehicle during the walkaround
inspection.Answer: condition of front axle:
• condition of windshield:
• Lights and reflectors:
- What should wheel bearing seals be checked for?
Answer: Leaks
- How many red reflective triangles should you carry?
Answer: Three (3)
- How do you test hydraulic brakes for leaks?
Answer:
pump the brake pedal three times.then apply firm pressure to the pedal and hold for five seconds.
- Why put the starter switch key in your pocket during the pre-trip inspection?
Answer: For your safety
- Why should you back toward the driver's side?
Answer: So that you can see better
- 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.
- What is the most important hand signal that you and the helper should agree on?
Answer: Stop
- What are the two special conditions where you should downshift?
Answer: Before starting down a hill; Before entering a curve
- When should you downshift automatic transmissions?
Answer: when going down grades
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