cdl pre trip manual

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Mastering the CDL Pre-Trip Inspection Exam: A Complete Guide

Learn how to conduct thorough pre-trip inspections with our guide, a critical component for commercial vehicle safety.

Written by Andrei Zakhareuski. With over 16 years of expertise, Andrei leads Driving-Tests.org, a top online resource for driver education. His leadership has established vital partnerships with over 2,600 libraries, educational bodies, and state agencies.

The CDL Pre-Trip Inspection Exam is an integral part of obtaining your commercial driver’s license. This guide covers Class A and Class B pre-trip inspections, provides a checklist, and offers tips for memorizing the inspection process.

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Engine Compartment Inspection

Includes checking for leaks, belt tension, and the condition of hoses, among other components.

Cab Check/Engine Start

Involves inspecting the cab’s interior, gauges, and starting the engine to check for abnormalities.

Brake Check

Focuses on air brake systems, including air brake checks and the parking brake test.

Here’s what to know for the CDL class B.

Vehicle Overview

Begin with a general overview of the vehicle, checking for obvious signs of damage or issues.

External Inspection

Inspect all external components, including tires, lights, and mirrors.

Internal Inspection

Check all internal controls, ensuring everything is functional and within reach.

​ What to Remember

• Lights and reflector s: Ensure all are clean and functional.
• Engine oil and coolant levels : Check for adequate levels.
• Steering mechanism : Ensure it’s secure and functioning.
• Horn : Test for functionality.
• Windshield wipers : Check for operability and condition.
• Mirror s: Adjust for optimal visibility.
• Emergency equipment : Ensure presence and accessibility.
• Air brake system : Test for leaks and proper pressure.

​ Memorization Tips to Help You Out

• Create a Routine : Develop a consistent order in which to conduct your inspection.
• Use Mnemonics : Create acronyms or phrases to help remember the steps.
• Practice Regularly : Hands-on practice is the most effective way to memorize the inspection process.
• Visual Aids : Use diagrams or checklists as visual reminders.

Pro Tip : Practice the pre-trip inspection in a real-world setting. The more you perform the inspection in a practical environment, the more natural it will become.

Remember, the pre-trip inspection is not just a test requirement – it’s a fundamental safety practice every commercial driver should master. For more resources and detailed guides, visit Driving-Tests.org .

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• Start a free Pre-Trip Inspection practice test:
• What to Remember
• Memorization Tips to Help You Out

CDL Pre-Trip Inspection Learning Center

The Pre-Trip inspection test is an important part of the CDL test – and one of the toughest state tests to master. It involves memorization of many parts of a commercial motor vehicle (CMV). CMV drivers are required to explain to the examiner each step in the inspection process. Even more importantly, mastering the Pre-Trip will be a skill that helps you throughout your truck driving career.

New: To help you remember key parts of the Pre-Trip, check out our new Pre-Trip Inspection Practice Tests.

Learn How to Perform a Proper CDL Pre-Trip Inspection.

There are lots of videos on pre-trip inspections. Many are well done, some not so much. We’ve decided to narrow it down to one so you can focus. The video we selected had to be easy to hear, see, and understand. It couldn’t be too complicated, but at the same time had to be thorough and cover everything. The instructor also had to have a logical system of doing things that would help you quickly master the inspection. The following video accomplishes all this.

Watch this video from Apex CDL Institute on a Class A Pre-Trip Inspection. Just sit back and take it all in the first time. Then, go back and watch again, this time pausing the video at key points and taking notes.

Note: Not all parts mentioned in this video will be located in the same place. It depends on the truck you’ll do the pre-trip on. Truck and engines vary greatly, so you must first get familiar with where these parts are on YOUR truck.

Quick tip: Work in a routine. Develop a personal system of doing things. Left to right, top to bottom, etc. This will prevent you from missing anything as you’ll check the same things every time.

This is NOT just about passing the Pre-Trip portion of the CDL test. Mastering this process will:

• Keep you and others safe – and alive!
• Keep you on the road – and not out of service because of vehicle violations
• Keep you making money . That’s ultimately why you’re doing all this, right? You’re really only making money when the wheels are turning.