California CDL Pre-Trip Inspection Checklist (Free Printable PDF)

If you fail your California CDL skills test, odds are it'll be on the pre-trip. Not the backing. Not the road. The walk-around. Examiners at every DMV field office wash applicants out on this section more than any other — because there's nowhere to fake it. You either know what a slack adjuster is and where it lives, or the examiner watches you point at the wrong part and writes you up.

This page is the california cdl pre-trip inspection checklist built straight from the 2026 California Commercial Driver Handbook (DL 650), Section 2.1 and Section 11. The 7-step method in the order CA tests it. Every danger number you'll be asked about. The California-only rules that trip people up. A printable version at the bottom you can carry into the truck.

Real talk: print it, fold it, put it in your pocket, walk your truck three times a day for two weeks. That's how people pass. There is no other shortcut.

What the California Pre-Trip Inspection Test Actually Is

Per CA DMV handbook §11.1 (p. 11-1), the vehicle inspection test (formerly called "pre-trip") is the first of three skills tests you have to pass. Fail it and the basic control and road tests get postponed — you don't even get to back the truck. You get 3 attempts total across all three skills tests per application.

A few hard rules from §11.1 you need to lock in before you ever set foot in the yard:

• The entire test must be conducted in English. Per CFR Title 49 §§391.11(b)(2) and 383.133(c)(5), interpreters are prohibited. Two verbal warnings on the same test date are allowed. On the third offense, the test ends as an automatic failure.
• You cannot use a vehicle with labeled or marked components. No tape on the alternator. No sticker on the leaf spring. If the truck has labels, DMV won't run the test on it.
• You can use the official Vehicle Inspection Guide (printed on the last page of Section 11, p. 11-12) during the test — but you cannot write notes on it. It's a clean reference card only.
• You have to walk around the vehicle, point to or touch each item, name it, and explain to the examiner what you're checking and why. Pointing without naming = no credit. Naming without explaining = no credit.

The examiner doesn't grade you on whether your truck is actually defect-free. They grade you on whether you would have caught a defect if it was there.

The 7-Step California CDL Pre-Trip Inspection Checklist

The handbook (§2.1.5, p. 2-4 through 2-8) calls this the 7-step inspection method. Examiners grade you on whether you follow it in order. The General Knowledge written test asks questions like "which step does X happen in." Burn the sequence into your head before anything else.

Memory trick: "Old Engine Cabs Light Walks Signal Final." First letters of each step in order. Sing it to yourself, repeat it before you sleep, hear it back on test day.

Two steps are easy to flip in your head and the examiner will dock you for it. Step 4 (engine off, lights on) comes before Step 5 (walk-around) because you need the lights ON when you walk outside to verify them. Step 6 (signal lights) is a separate trip outside — the handbook (§2.1.5, p. 2-7) is explicit: "Checks of the brake, turn signal, and 4-way flasher functions must be done separately." You can't combine them.

Step 1: Vehicle Overview (Approaching)

This is the easiest step to skip because nothing's actually broken yet — you're just approaching the rig. The examiner is watching to see if you do it anyway.

• Review the last vehicle inspection report. If defects were noted, certify that they were repaired or were unnecessary.
• Note the general condition of the vehicle. Is it leaning to one side?
• Look under the vehicle for fresh oil, coolant, grease, or fuel leaks.
• Check the area around the vehicle for hazards to movement — people, other vehicles, objects, low-hanging wires, limbs.

Step 2: Engine Compartment (Engine OFF)

Parking brakes on or wheels chocked before the hood goes up. Then check (handbook §2.1.5 Step 2, p. 2-4 and §11.2.1, p. 11-2):

• Engine oil level — above the refill mark
• Coolant level — sight glass or radiator cap (describe what you'd check if no sight glass)
• Power steering fluid — above the refill mark
• Windshield washer fluid
• Battery fluid (except maintenance-free), connections, tie-downs
• Automatic transmission fluid — may require engine running
• Belts — alternator, power steering, water pump, air compressor. 1/2 to 3/4 inch of play at the center of the belt (§11.2.1, p. 11-2). Cracks, frays, loose fibers = replace. If a component isn't belt-driven, tell the examiner and confirm it's mounted securely and not leaking.
• Leaks — fuel, coolant, oil, power steering, hydraulic, battery
• Electrical wiring insulation — cracks and wear
• Hoses — condition and leaks
• Water pump, alternator, air compressor — identify each, confirm securely mounted, no leaks

Lower and secure the hood when done.

Step 3: Start the Engine and Inspect the Cab

Get in, parking brake on, gearshift in Neutral (or Park for automatic), depress the clutch before starting (§11.2.1, p. 11-2), start the engine, keep the clutch in until idle, then release slowly.

Gauges to verify (handbook §2.1.5 Step 3, p. 2-5):

Dash indicators to test: left turn signal, right turn signal, 4-way emergency flashers, high-beam headlight, ABS indicator (§11.2.2, p. 11-3).

Controls to check for looseness, sticking, damage: steering wheel, clutch, accelerator, foot brake, trailer brake (if equipped), parking brake, retarder controls (if equipped), transmission controls, inter-axle differential lock (if equipped), horn(s), windshield wiper/washer, all lights (headlights, dimmer, turn signal, 4-ways, parking/clearance/marker switches).

Mirrors and windshield — clean, no cracks, no illegal stickers, no obstructions.

Emergency equipment (this WILL be asked):

• Spare electrical fuses (unless the vehicle has circuit breakers — if no fuses, mention this to the examiner)
• 3 red reflective triangles, OR 6 fuses, OR 3 liquid burning flares
• Fire extinguisher — properly charged and rated, securely mounted

Safety belt — securely mounted, adjusts and latches properly, not ripped or frayed.

Memory trick — "3-6-3": Three triangles or six fuses or three flares. Pick one set, any one is legal.

Step 4: Turn Off the Engine and Check the Lights

This is the transition step. Get this wrong and the entire walk-around is invalid.

1. Make sure the parking brake is set.
2. Turn off the engine.
3. Take the key with you. Put it in your pocket. (Handbook §2.1, p. 2-8 question 11 literally asks why — so nobody else can move the truck while you're walking around it.)
4. Turn on the headlights (LOW beams) and 4-way emergency flashers.
5. Get out.

Memory trick — "Key in pocket, lights on, walk left." The universal start of the walk-around.

Step 5: The Walk-Around Inspection

The big one. This is where most failures happen because there are dozens of named parts. Walk the vehicle clockwise (most examiners). The handbook order is Front → Left Front → Left Front Wheel → Left Front Suspension → Left Front Brake → Front (axle, steering, windshield, lights) → Right Side → Right Rear → Rear → Left Side → Back to start.

On every wheel position you'll repeat the same component family: suspension → brakes → wheel → tire → lights/reflectors.

#### Suspension (every axle)

• Springs — missing, shifted, cracked, or broken leaves. If 1/4 or more of the leaves are missing or broken → OUT-OF-SERVICE.
• Broken or distorted coil springs
• Torsion bars, torque arms — not damaged, mounted securely
• Air ride — no damage or leaks
• Mounts — spring hangers, bushings, u-bolts, bolts not cracked, loose, or missing
• Shock absorbers — secure, no leaks

#### Brakes (every axle)

• Slack adjusters — securely mounted, no broken/loose/missing parts. For manual slack adjusters, brake pushrod should not move more than 1 inch when pulled by hand with brakes released
• Brake chambers — not leaking, cracked, or dented. No loose/missing clamps
• Brake hoses/lines — no cracks, wear, fraying. Couplings secure, no leaks
• Drum brakes — no cracks, dents, holes. No loose/missing bolts. No oil/grease contamination
• Brake linings — where visible through drum openings, a visible amount must be showing

#### Wheels (every axle)

• Rims — no damage, no bending, no welding repairs (welded rims are not safe). Check for rust trails indicating loose rim
• Tires — see danger numbers below
• Hub oil/grease and axle seals — not leaking. If sight glass, oil level adequate
• Lug nuts — all present, no cracks, no rust trails or shiny threads (= looseness)
• Spacers (Budd spacing) — if dual wheels, spacers not bent/damaged/rusted through, evenly centered, no debris between dual tires

#### Tire danger numbers (§2.1.3, p. 2-2 and §11.3.4, p. 11-6)

Plus:

• No fabric showing through tread or sidewall
• No regrooved, recapped, or retreaded tires on the front wheels of a bus — prohibited
• No mixing radial and bias-ply tires
• No dual tires touching each other or vehicle parts
• No mismatched sizes
• Valve caps and stems present, intact, not damaged
• Proper inflation by tire gauge — kicking or striking the tire with a mallet does NOT get credit (§11.3.4, p. 11-6)

Memory trick — "4-front, 2-back": 4/32 on steering, 2/32 everywhere else.

#### Front of vehicle (steering & front lights)

• Steering box and hoses — securely mounted, no leaks, no missing nuts/bolts. Check power steering hoses for leaks/damage
• Steering linkage — connecting links, arms, rods, joints, sockets not worn/cracked/loose. No missing nuts, bolts, cotter keys
• Steering wheel play — more than 10 degrees (about 2 inches at the rim of a 20-inch wheel) is unsafe (§2.1.3, p. 2-2)
• Front axle — check condition
• Windshield — clean, no damage; wiper arms have proper spring tension; blades not stiff/damaged
• Lights/reflectors (front) — parking, clearance, identification, side-marker lights and reflectors clean, operating, amber at front, red at rear

#### Coupling area (if combination vehicle)

• Fifth-wheel — locking jaws fully closed around kingpin, skid plate lubricated and securely mounted, all bolts/pins secure
• Release arm — engaged position, safety latch in place
• Kingpin/apron/gap — kingpin not bent or damaged, apron not bent/cracked/broken, trailer lying flat on skid plate (no gap)
• Locking pins (sliding fifth-wheel) — fully engaged, no leaks if air powered
• Air/electric connectors — sealed, in good condition, all connections secured, electrical plug firmly locked
• Air/electric lines — listen for leaks, no cuts/chafing/splicing/wear (no steel braid showing), not tangled/pinched/dragging
• Catwalk/steps — solid, clear, securely bolted to frame

#### Cargo securement (trucks)

• Cargo properly blocked, braced, tied, chained
• Header board adequate and secure (if required)
• Side boards, stakes, canvas/tarp properly secured
• If oversize: required signs, flags, lamps, reflectors mounted; permits in driver's possession
• Curbside cargo compartment doors closed, latched/locked, security seals in place

#### Rear of vehicle

• Rear clearance, identification, tail, and turn signal lights — clean, operating, red at rear (turn signals can be red, yellow, or amber)
• License plate present, clean, secured
• Splash guards present, not damaged, not dragging or rubbing tires
• Rear doors closed, latched, locked
• Tailboards up and secured, end gates free of damage

#### Exhaust system

• No cracks, holes, severe dents
• No loose/broken/missing exhaust pipes, mufflers, tailpipes, vertical stacks
• Not rubbing fuel system parts, tires, or other moving parts
• Not leaking (a broken exhaust can pump poison fumes into the cab or sleeper)

#### DEF (if equipped with emissions after-treatment)

• DEF tank level more than 1/8 full (§11.3.5, p. 11-7)
• DEF indicator on the dash working properly

#### Frame

• No cracks, broken welds, holes, or other damage to longitudinal frame members, cross members, box, floor

#### Battery (if not in engine compartment)

• Securely mounted, box has secure cover, batteries not broken/leaking
• Fluid at proper level (except maintenance-free)
• Cell caps present, securely tightened, vents free of foreign material

Halfway through the checklist and already drowning? That's normal. The full Master Guide expands every line above into a "what to point at, what to say, what the examiner wants to hear" script — plus 440+ practice questions covering the exact distractors DMV uses. The deep-dive vehicle inspection chapter is bundled with the California CDL Master Guide on Gumroad — 206 pages, $39, 30-day refund. It's how most readers go from "I read the handbook once" to "I can run the walk-around from memory in 8 minutes."

Step 6: Check the Signal Lights

Back in the cab. Engine off. (Yes, all of this for one more lap.) Per §2.1.5 Step 6, p. 2-7:

1. Turn off all the lights.
2. Turn on the stop lights — apply the trailer hand brake OR have a helper press the brake pedal.
3. Turn on the left turn signal lights.
4. Get out.

Verify outside:

• Left front turn signal — clean, operating, amber or white on signals facing forward
• Left rear turn signal AND both stop lights — clean, operating, red, yellow, or amber

The handbook is explicit: brake, turn signal, and 4-way flasher checks must be done SEPARATELY. Bundle them and you fail this step.

Then get back in. Turn off the lights not needed for driving. Check for required papers, trip manifests, permits. Secure all loose articles in the cab. Start the engine.

Step 7: Final Brake Tests

This is where automatic failures happen. Per §11.2.2 Note, p. 11-4: failure to perform both components of the hydraulic brake check is an automatic failure of the entire vehicle inspection test.

Hydraulic brake leak test:

Pump the brake pedal 3 times. Then apply firm pressure to the pedal and hold for 5 seconds. The pedal should not move.

If equipped with a hydraulic brake reserve (back-up) system: with the key off, depress the brake pedal and listen for the sound of the reserve system electric motor.

If equipped with Hydro-Boost: engine off, release parking brake, depress and release pedal several times to deplete pressure, then hold pedal with light pressure (15–25 lbs), start the engine at idle. If working, the pedal will yield slightly then hold.

Warning buzzer/light: off.

Parking brake test:

1. Fasten safety belt
2. Set the parking brake (power unit only)
3. Release the trailer parking brake (if applicable)
4. Place into low gear
5. Gently pull forward against the parking brake to make sure it holds
6. Repeat for the trailer with the trailer parking brake set and power unit released (if applicable)

Service brake stopping action test:

• Drive at 5 mph
• Push the brake pedal firmly
• No pulling to either side (pulling = brake trouble)
• No unusual pedal feel or delayed stopping

Memory trick — "3-5-0": Three pumps, five seconds, zero movement.

Critical Danger Numbers to Memorize

The General Knowledge written test (50 questions, 80% to pass) loves these. Lock them in cold.

Real talk: DMV recycles these exact numbers across the question pool. The distractors are designed to make you second-guess — "is it 50 to 80 in 3 minutes or 50 to 90?" Drill them until you can answer them in your sleep.

California-Specific Rules That Trip People Up

Most pre-trip concepts come from FMCSA (federal). California layers a few state-specific rules on top of the federal baseline.

English-only — and "interpreters are prohibited"

Per §11.1, p. 11-1, citing CFR Title 49 §§391.11(b)(2) and 383.133(c)(5): the entire vehicle inspection, basic control skills, AND road tests must be conducted in English. If you fail to comprehend an English instruction, you get a verbal warning. Third offense on the same test date = automatic failure, entire test ends.

No marked or labeled vehicles

Per §11.1, p. 11-1: any test vehicle with components marked or labeled cannot be used. This includes after-market labels. If you're borrowing a truck from a school, double-check there are no stickers on the alternator, slack adjuster, or anything else before you show up.

The Vehicle Inspection Guide is fair game — notes are not

The official Vehicle Inspection Guide is printed on the last page of Section 11 (p. 11-12) of the CA handbook. You can bring it into the test. You cannot write on it or annotate it. It's a memory aid — front of vehicle, steering axle, driver door, fuel area, under vehicle, drive axles, coupling devices, trailer components, rear of trailer. That's it.

You don't know which test form you'll get

Per §11.7.1 (Class A) and §11.7.2 (Class B/C), p. 11-11: Class A applicants get 1 of 4 versions. Class B/C applicants get 1 of 3 versions. You won't know which form until just before testing begins. You have to know the entire procedure — there is no studying for "the easy version."

Brake lights, flashers, turn signals, and horn must work

Per §11.1, p. 11-1: if any of those fail before the test, the skills and road portions are postponed. Bring a truck that works.

3 attempts. Period.

Per §11.1, p. 11-1: you get 3 attempts total to pass the vehicle inspection, basic control, and road tests per application. Three fails and the application closes — you start the process over.

CHP fixed inspection points are HazMat-only

This is a common written-test trap. The CHP-prescribed inspection locations mentioned in §9.7 of the handbook only apply to placarded explosives, radioactive materials (HRCQ), or inhalation hazards (IH) — per CCR Title 13 §§1150-1159. General freight doesn't require stopping at CHP inspection points. The wrong-answer choice will try to tell you otherwise.

Free Printable California CDL Pre-Trip Checklist (PDF)

The official one-page CA DMV Vehicle Inspection Memory Aid is on page 11-12 of the 2026 California Commercial Driver Handbook (DL 650). Download the handbook PDF directly from DMV, jump to that page, print it.

Use that DMV diagram as the "skeleton" of your walk-around order. Use the checklist above as the "what to say at each station" script. Run them together in the yard until you can talk through the entire 7-step inspection without looking.

A few cheap drills that work:

1. Phone-camera drill: Record yourself doing the walk-around. Watch it back. Anywhere you mumble, anywhere you skip — that's where the examiner will catch you.
2. Paper-only drill: Sit down with no truck. Write out the 7 steps and every check item under each one, from memory. Cross-reference against this page. Repeat until your written list matches.
3. Buddy drill: Have someone read the checklist while you point and name. Switch roles. Faster than studying alone.

Bottom Line

The california cdl pre-trip inspection checklist is not hard material. It's a lot of material. The 7-step method, the danger numbers, the named parts on every axle, the California-only rules — none of it requires a master's degree. It requires drill, in order, until the words come out automatically when you point at a part.

Two weeks of walk-arounds in the yard with the handbook open beats a month of re-reading. Print this page, print the DMV memory aid, walk the truck.

Ready to Pass the First Time?

This blog post covers the structure. The California CDL Master Guide covers the depth.

Inside the 206-page Master Guide on Gumroad:

• Chapter 3: Vehicle Inspection (Pre-Trip Basics) — every step expanded into a "what to point at, what to say, what the examiner wants to hear" script
• Chapter 9: Air Brake Components and Chapter 10: Air Brake Operation — the air brake checks bundled into Step 3 and Step 7, broken down for the dedicated air brake test
• Chapter 11: Coupling/Uncoupling — the fifth-wheel and trailer connection points, expanded
• 440+ practice questions including the exact pre-trip distractor patterns DMV uses
• 30-day refund if it doesn't help you pass

$39, one-time, lifetime access. Sourced directly from the 2026 CA Commercial Driver Handbook (DL 650).

Get the California CDL Master Guide →