Pre-Trip Drill

Available for iPhone

Make every
check count.

Build confidence for the walk-around. Practice each check out loud, hear your answer and know what needs another pass.

Get it on the App Store Free checklists

Class A first. Engine practice & printable checklists are free.

102study cards
7Class A sections
0subscriptions
Practice home with seven Class A sections and a truck illustration.
Oil level practice card during recording, with study prompts and a five-bar audio level indicator.

Your next walk-around starts here.

A routine you can repeat

Read it. Say it.
Make it stick.

Turn a long checklist into focused practice, one card at a time.

01 / LEARN

Know what to check.

Clear prompts separate what to say from what to inspect. Start with the free Engine section.

02 / REHEARSE

Practice it out loud.

Record and replay your answer. With Pro, optional on-device keyword feedback helps you compare the words you used.

03 / REPEAT

Give it another pass.

Mark a card Got it or Needs work. Your saved progress shows where to spend your next practice session.

Practice while safely parked. Speech feedback checks keywords; it does not grade the physical inspection.

Inside Pre-Trip Drill

Less guessing.
More practice.

Purpose-built tools for the work between reading the manual and showing up for your test.

RECALL · PRO

Your words.
No script.

Rehearse with Examiner practice, then reveal the prompt and mark your own answer.

Completed Examiner rehearsal with a self-marked score ring, elapsed time, cards done and Needs work count.
PROGRESS

See what
needs work.

Keep track of cards you practiced and the checks you want to revisit. Saved on your iPhone.

Example progress after four practice cards, with one card marked Needs work.
STATE GUIDANCE

Know
your source.

Follow links to state manuals. Confirm your vehicle and test-site requirements with the source.

California state guide with the Mostly updated (22 of 25 sites) badge and manual link.

Actual app screens. Progress shown is a practice example. Initial release: English, Class A.

The whole walk-around

Seven sections.
One steady routine.

102 cards built around the public CDL manual structure, from engine checks to air brakes. Practice the applicable items with your instructor and current state manual.

Start with a free checklist
  • 01
    Engine compartmentOil level, Coolant level, Power steering fluid, …
  • 02
    Front of cab and lightsLights and reflectors, Windshield and wipers, Mirrors, …
  • 03
    Side and rear of tractorRear suspension and air bags, Rear brakes, Dual wheels, tires, spacing, lug nuts, axle seals, …
  • 04
    Coupling systemAir and electrical lines, Glad hands and seals, Apron and platform, …
  • 05
    TrailerHeader board, Trailer lights and reflectors, Landing gear, …
  • 06
    In-cab inspectionSeat belt, Gauges (oil pressure, coolant temperature, voltmeter, air pressure), Warning lights and buzzers, …
  • 07
    Air brake testApplied leak test (pressure loss within limits over one minute), Low air warning device activates, Tractor protection valve and emergency brakes pop out (spring brake activation), …

Start free. Go further with Pro.

A practice habit.
Not a subscription.

Try Engine compartment practice and print a checklist for free. Unlock the other sections and more ways to rehearse with a single Pro purchase.

  • Free Engine practice
  • Free printable seven-section checklist
  • Pro: all sections, Examiner practice & keyword feedback

Pro · one-time purchase

$12.99 one-time

All seven Class A sections, Examiner practice and optional on-device keyword feedback.

  • One unlock. No subscription.
  • Keep your practice progress on your iPhone.
Get it on the App Store

Download free. Check your local in-app purchase price in the App Store.

Start practicing

Get it on the App Store

Start with free Engine practice and a printable checklist.

English Class A practice on iPhone. Class B is not included.

Get it on the App Store

Free Engine practice and printable checklist. Pro is a one-time in-app purchase.

Something useful, right now

Take a checklist
to your next practice.

Free Class A study checklists, with state manual links. Print a copy or save it as a PDF.

All 50 states and the District of Columbia. Browse A–Z.

Before you start

A few things to know.

Is this the official test?

No. Pre-Trip Drill is an independent study aid. Your current state CDL manual, instructor and examiner's instructions take priority. The app does not certify inspection skills or test readiness.

Can I practice offline?

The iPhone app saves practice progress locally and supports recording and playback without an internet connection. Optional speech feedback needs on-device recognition support and permission. Opening state websites and making or restoring purchases requires internet access.

Which classes and languages are included?

The initial release focuses on Class A tractor-trailers in English. Class B and Spanish explanations are planned for later updates and are not included in the first release.

When can I download it?

Download the iPhone app from the App Store. Engine practice and the printable checklist are free; Pro is an optional one-time in-app purchase.

Is there an Android version?

We are focusing on iPhone first. An Android release date has not been announced.