CDL Pennsylvania Test Bank | 170 Questions with Verified Answers | 100% Correct | Latest 2025/2026.

CDL Pennsylvania Test Bank | 170 i,- i,- i,- i,- i,- i,-




Questions with Verified Answers | 100% i,- i,- i,- i,- i,- i,-




Correct | Latest 2025/2026. i,- i,- i,-




What three kinds of emergency equipment must you have?
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Fire extinguisher(s).
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• Spare electrical fuses (unless equipped with circuit breakers).
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• Warning devices for parked vehicles (for example, three (3)
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reflective warning triangles). i,- i,-




What is the minimum tread depth for front tires? For other tires?
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Front 4/32 Other 2/32
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Name some things you should check on the front of your vehicle
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during the walkaround inspection.
i,- condition of front axle:
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• condition of windshield:
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• Lights and reflectors:
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What should wheel bearing seals be checked for?
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How many red reflective triangles should you carry?
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,How do you test hydraulic brakes for leaks?
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pedal three times. then apply firm
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pressure to the pedal and hold for five seconds.
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Why put the starter switch key in your pocket during the pre-trip
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inspection? For your safety i,-i,- i,- i,- i,-




Why should you back toward the driver's side?
i,- i,- i,- i,- i,- i,- i,- i,-i,- i,- So that you
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can see better
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What is the most important reason for doing a vehicle
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inspection? Safety is the most important reason you inspect
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your vehicle, safety for yourself and for other road users.
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What things should you check during a trip?
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• Air pressure gauge (if you have air brakes).
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• temperature gauges.
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• Pressure gauges.
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• Ammeter/voltmeter.
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• mirrors.
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• tires.
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,• cargo, cargo covers.
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• Lights.
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• Etc.
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What are the key steering system parts.
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Tie rod i,-




Steering Shaft i,-




Steering Arm i,-




Power steering cylinder i,- i,-




Name some suspension system defects.
i,- Spring hangers that
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allow movement of axle from proper position.
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• cracked or broken spring hangers.
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• missing or broken leaves in any leaf spring. If one-fourth or
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more are missing, it will put the vehicle "out of
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service," but any defect could be dangerous.
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• Broken leaves in a multi-leaf spring or leaves that have shifted
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so they might hit a tire or other part.
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• Leaking shock absorbers.
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• torque rod or arm, u-bolts, spring hangers or other axle
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positioning parts that are cracked, damaged i,- i,- i,- i,- i,-




or missing.
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, • Air suspension systems that are damaged and/or leaking.
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• Any loose, cracked, broken or missing frame members.
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If stopped on a hill, how can you start moving without rolling
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back? Partly engage the clutch before you take your right
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foot off the brake. i,- i,- i,-




What is the most important hand signal that you and the helper
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should agree on? Stop i,- i,- i,-i,- i,-




What are the two special conditions where you should downshift?
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i,-Before starting down a hill; Before entering a curve
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When should you downshift automatic transmissions?
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going down grades i,- i,-




retarders keep you from skidding when the road is slippery. true
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or False? (false) retarders help slow a vehicle, reducing the
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need for using your brakes. they reduce brake wear and give you
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another way to slow down. i,- i,- i,- i,-




What are the two ways to know when to shift?
i,- i,- i,- i,- i,- i,- i,- i,- i,- i,-i,- i,- RPM and Road i,- i,- i,-



Speed