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NOTE: Information in this section is not all inclusive and is subject to change due to law changes. For the latest information refer to the current CDL Manual for the
state you live in.
Trailer Pre Trip Inspection

Air/Electrical Connections
  • Check that trailer air connectors are sealed and in good condition.
  • Make sure glad hands are locked in place, free of damage or air leaks.
  • Make sure the trailer electrical plug is firmly seated and locked in place.

Header Board
  • If equipped, check the header board to see that it is secure, free of damage, and strong enough to contain cargo.
  • If equipped, the canvas or tarp carrier must be mounted and fastened securely.
  • On enclosed trailers, check the front area for signs of damage such as cracks, bulges, or holes.

SIDE OF TRAILER (Pre Trip Inspection)

Landing Gear
  • Check that the landing gear is fully raised, has no missing parts, crank handle is secure, and the support frame is not damaged.
  • If power operated, check for air or hydraulic leaks.

Doors/Ties/Lifts
  • If equipped, check that doors are not damaged. Check that doors open, close, and latch properly from the outside.
  • Check that ties, straps, chains, and binders are secure.
  • If equipped with a cargo lift, look for leaking, damaged or missing parts.
  • Lift should be fully retracted and latched securely.

Frame
  • Look for cracks, broken welds, holes or other damage to the frame, cross members, box, and floor.

Tandem Release Arm/Locking Pins
  • If equipped, make sure the locking pins are locked in place and release arm is secured.

REMAINDER OF TRAILER (Pre Trip Inspection)

  • Please refer to the previous sections for detailed inspection procedures regarding the following components:
  • Wheels.
  • Suspension system.
  • Brakes.
  • Doors/Ties/Lift.
  • Splash Guards.
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Commercial Drivers License (CDL) Pre-Trip Inspection: Trailer
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