Truck Inspection Checklist

A DOT-style pre-trip inspection for commercial trucks covering tires, brakes, lights, coupling, fluids and load securement.

Published July 15, 2026

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Engine Compartment & Fluids

Check engine oil level and condition
Check coolant level and inspect the radiator
Check power steering and washer fluid
Inspect belts and hoses for cracks or wear
Look for leaks under the engine and components
Check the battery is secure with clean connections

Tires & Wheels

Check tire pressure and inflate to spec
Measure tread depth against the legal minimum
Inspect for cuts, bulges, uneven wear or debris
Check for missing or loose lug nuts and rust streaks
Rust trails running from a lug nut often signal looseness, while shiny metal threads can indicate movement.
Inspect rims for cracks or damage
Confirm dual tires are not touching and valve caps are present

Brakes & Air System

Perform an air brake leak-down and build-up test
Shut off the engine, release the brakes, and press the foot pedal to ensure pressure drop remains normal.
Check the low-air warning and emergency brake function
Inspect brake chambers, slack adjusters and linings
Check brake drums or rotors for cracks or wear
Inspect air lines and connections for leaks or damage
Drain air tanks of moisture as required
Moisture and oil buildup in tanks can freeze in cold weather or degrade brake valves over time.

Lights & Signals

Test headlights on low and high beam
Check brake lights, tail lights and turn signals
Confirm clearance, marker and reflector lights work
Test the four-way hazard flashers
Check the horn and backup alarm
Clean lenses and reflectors for visibility

Coupling & Trailer

Confirm the fifth wheel is locked with no gap
Check the locking jaws are closed around the kingpin
Inspect the kingpin and apron for damage
Check that the release arm is in the locked position
Connect and inspect air lines and the electrical cord
Check landing gear is fully raised and secured
Ensure the crank handle is locked into its cradle so it does not catch road debris or swing loose.
Inspect the trailer frame, doors and mud flaps

Cab & Load Securement

Test steering play, mirrors and the windshield
Check seat belt, gauges and warning lights
Confirm the fire extinguisher and emergency triangles are present
Verify the extinguisher gauge shows full pressure, the pin is sealed, and three triangles are present.
Verify the load is secured, balanced and within weight limits
Inspect straps, chains, tarps and tie-downs
Confirm required permits and paperwork are aboard

Driver sign-off (DVIR)

Odometer reading: ________________
Result (No defects / Defects found): ____
Defects reported to (supervisor): ________________
Signature: ________________

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Commercial drivers can check tires, brakes, lights, fluids, coupling systems, and load securement before driving with this truck inspection checklist. It catches defects that could cause a breakdown, crash or violation before the truck leaves the yard.

This list follows the structure of a DOT-style pre-trip inspection used across the trucking industry, walking the vehicle from the engine compartment to the cab, trailer and lights. It is a safety supplement and a general guide, not a substitute for your company's procedures, the regulations that apply to you, or repairs by a qualified technician.

It suits drivers and operators of tractor-trailers, straight trucks and other commercial vehicles, with the same logic scaling across rigs. Always follow the official inspection requirements for your jurisdiction and document defects properly.

Print it or download the PDF and keep it in the cab so you can work through each section before every trip.

Regulatory basis: FMCSA 49 CFR 396.13 requires drivers to confirm a commercial motor vehicle is in safe operating condition before driving; 49 CFR 396.11 covers the driver vehicle inspection report (DVIR); and 49 CFR 396.17 requires a periodic inspection of every commercial motor vehicle at least once every 12 months. Rules change and vary by jurisdiction — confirm against the current regulation text, your employer's procedures and the manufacturer's manual.

FAQ

What is a pre-trip inspection?

A pre-trip inspection is a systematic walk-around and operational check a commercial driver performs before driving, covering tires, brakes, lights, coupling, fluids and the load. It confirms the truck is safe and roadworthy and is required by regulations in many jurisdictions.

How long does a truck inspection take?

A thorough pre-trip inspection typically takes around fifteen minutes once it is routine, longer when defects are found. Rushing it defeats the purpose; the goal is to find problems in the yard rather than discover them on the road.

What should I check on the coupling system?

Confirm the fifth wheel is locked with no gap, the kingpin is seated, the locking jaws are closed, the release arm is in position, and air and electrical lines are connected and free of leaks or damage. A bad coupling can cause a trailer to separate.

What if I find a defect during inspection?

Document the defect, report it per your company's procedures and do not operate the truck if the defect makes it unsafe or out of compliance. Have repairs done by a qualified technician and keep records as required by the regulations that apply to you.

Is a daily pre-trip the same as the annual inspection?

No. The pre-trip is the driver's own check before each trip; the annual periodic inspection under 49 CFR 396.17 is a separate, documented inspection by a qualified inspector at least every 12 months.

Do company pickup trucks require the same inspection as commercial semi-trucks?

While standard pickup trucks may not have air brakes or fifth-wheel couplings, safety inspections are still essential before daily use. Focus on tire condition, fluid levels, steering response, working lights, seat belts, and secure cargo in the bed. Fleet operators generally recommend daily visual checks on all company work vehicles regardless of vehicle class to catch mechanical issues early and protect drivers.

What is the difference between a pre-trip and a post-trip inspection?

A pre-trip inspection occurs before starting the route to confirm the vehicle is safe to drive. A post-trip inspection is performed at the end of the shift or workday to document any mechanical problems, unusual noises, or wear that developed during operation. Recording defects immediately allows maintenance teams to make necessary repairs before the truck is assigned to the next driver.

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