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View All PlansFree ID CDL Pre-Trip Inspection Practice Exam 2025
- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
- Based on 2025 ID commercial driver's license manual
- Triple-checked for accuracy
- Updated for August 2025
Until you possess a Idaho Commercial Learner’s Permit (CLP), you will not be able to receive hands-on training to become a commercial driver. An important skill you must learn is the proper way to conduct a thorough pre-trip inspection of your vehicle. You will likely use a checklist to work your way through inspecting the various systems and components of the vehicle, such as the brakes, headlights, tires, and windshield wipers, to verify their safe operation. You are required to hold a CLP before you may apply for a Idaho Commercial Driver’s License (CDL), and you must demonstrate your knowledge of pre-trip inspections. These trip inspections are required by federal regulation 49 CFR § 396.13 to verify your vehicle is safe for road use. An accident in Moscow or a breakdown in Boise could be a costly way to spend your day.
Our Idaho DMV CDL Pre-Trip Inspection Practice Test is expertly designed to teach you the nuts and bolts of this process. The practice test will help you understand the items needing inspection and how they might become problematic. It contains reliable information to help you stay safe while transporting cargo over short or long distances. The DMV CDL General Knowledge Test requires you to answer 80% of the 20 questions correctly to earn a passing grade. You can depend on the practice test to enhance and increase your knowledge of the pre-trip inspection process. Using the practice test, you can confidently answer any question about pre-trip inspections that gets you closer to passing the official knowledge test.
Unlike many other on-line resources, the CDL Pre-Trip Inspection Practice Test is interactive and designed to provide feedback on your answers. The practice test offers you the most relevant and authoritative information available. It is based on the most recent Idaho DMV CDL driver’s manual (Idaho CDL Handbook 2025) and up to date as of August 2025. It includes 20 multiple-choice questions, similar to those on the official knowledge test, to assess your understanding of the pre-trip inspection process. If you submit an incorrect answer, the practice test will provide a detailed explanation of the correct one. You won’t find such a feature in a study guide. Study guides help you memorize the answers to the questions, but you would need to do your own research to clear up any misconceptions. You can use the practice test to elevate your knowledge of pre-trip inspections and help keep you safe in your daily travels.
The ice cream potato is an exciting new dessert option, and you can find innovative study methods with practice tests for other U.S. states and Washington D.C. at https://driving-tests.org/academy/drivers-license.
- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
- Triple-checked for accuracy
What you need to know
What to expect on the actual ID DMV exam
questions
correct answers to pass
passing score
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Experience the Driving-Tests differenceList of questions (classic view)
- What structure supporting the fifth wheel skid plate should be checked for cracks or breaks?
- You pump the pedal three times and hold it down for five seconds, making sure that the pedal does not move. What are you inspecting?
- What transmits power from the transmission to the drive axle?
- What carries air or hydraulic fluid to the wheel brake assembly?
- ________ are gas or hydraulic devices that cushion the vehicle's ride and stabilize the vehicle.
- What is the sliding mechanism and locking device for tandem axles on trailers?
- What do you inspect to make sure that all are present and show no signs of looseness such as rust trails or shiny threads?
- What should you check to be sure it is solid, clear of objects, and securely bolted to the tractor frame?
- What maintains air pressure in the air brake system?
- Which tires should have a minimum tread depth of 4/32 inch?
- Which of the following can disengage the engine from the drivetrain?
- What transforms steering column action into wheel action?
- Make sure that the _________ are not cut, chafed, spliced, or worn, and not tangled, pinched, or dragged against tractor parts.
- You are looking for puddles on the ground and dripping fluids on the underside of the engine and transmission. What are you checking for?
- What should be fully engaged with no loose or missing pins in the slide mechanism of the sliding fifth wheel?
- To improve visibility during severe or stormy weather, __________ must be secure, undamaged, and operating smoothly and correctly.
- _________ should be clean with no dirt, illegal stickers, obstructions, or damage.
- _________ are the brackets, bolts, or bushings that are used to attach the spring or air bag to the axle and vehicle frame.
- If the wheel has a sight glass, check that the oil level is adequate. Otherwise, look for leaks around the
- What releases the fifth wheel locking jaws so the trailer can be coupled?