- 0 Incorrect (4 allowed to pass)
- 0 Correct
- Updated for February 2025
- Based on 2025 MD commercial driver's license manual
Free MD CDL Pre-Trip Inspection Practice Exam 2025
Which are the most dangerous roads in Maryland? Most analysts agree: For commercial driving, Interstate 95 is not only one of the worst in Maryland but also one of the worst in the country. As the main interstate highway on the East Coast from Florida to Maine, I-95 suffers from heavy traffic, frequent congestion, and numerous construction zones, which require you to stay alert. I-95 is not the only difficult road in Maryland. For example, sharp curves, steep grades, fog, and snow and ice in winter can make for hazardous driving on U.S. Route 40 and the road intended to largely replace it: Interstate 68. Truck drivers should use caution when driving on these roads, particularly in adverse weather.
On roads with hazardous driving conditions, your Commercial Motor Vehicle (CMV) must be able to handle such conditions safely and make sudden emergency maneuvers if necessary to prevent an accident. You must be sure that your brakes, horn, steering, lights, and tires are in good condition. Federal regulation 49 CFR § 396.13 requires you to be satisfied that your CMV is safe to drive before you drive it. To do this, you must conduct a comprehensive pre-trip inspection of your CMV before your first trip of the day in that vehicle.
Your official Maryland CDL manual (Maryland CDL Handbook 2025) discusses how to perform a pre-trip inspection, including which items you should check and how you can tell whether those items are working correctly.
The official General Knowledge test, which you must pass to become a commercial driver, will likely contain some questions on pre-trip inspections. All questions on the General Knowledge test are based on the official Maryland CDL manual. To prepare for this test, you should study the manual. But to make sure you pass the test, you should do even more.
Our practice tests can help you straighten out all that information in your mind and make it easier to absorb. This Maryland CDL Pre-Trip Inspection Practice Test, the first of several we offer, will help you master the material on pre-trip inspections in the official CDL manual and ace those questions on the General Knowledge test.
If you need help with a practice question, call on our AI Assistant. It can supply hints and explanations and answer your own questions about commercial driving theory. If you still miss a question, the AI assistant will immediately let you know and provide an explanation of the correct answer.
Be sure to try our other Maryland CDL Pre-Trip Inspection Practice Tests, too!
- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
- Triple-checked for accuracy
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List 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?
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