Does passing the modernized vehicle-inspection test show that you checked every item in the federal inspection rules?
Correct answer: No; the test samples safety-critical inspection knowledge.
Section 11 describes a safety-critical test, not every federal inspection guideline. Drivers must still know and carry out the inspections required for their operation.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11, introduction; physical PDF page 276 (printed 276); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
For the Section 11 inspection test, which checklist preparation is permitted?
Correct answer: Use the provided checklist without added notes before the test.
Maryland permits the Section 11 checklist and checking off completed items during the inspection. Added notes, scripts or pre-test markings are not permitted. You must still identify each item and explain what you are checking.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11, introduction; physical PDF page 276 (printed 276); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
An applicant points to a steering component and says its name. What else does the modernized inspection require?
Correct answer: Explain the condition or defects being checked on that item.
Credit requires identifying the item and explaining what you are inspecting it for. Simply naming a component does not demonstrate knowledge of its safe condition.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11, introduction; physical PDF page 276 (printed 276); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
During the Section 11 test, must you crawl underneath the truck to earn inspection credit?
Correct answer: No; the test does not require crawling underneath it.
The handbook expressly says you will not have to crawl under the vehicle. Identify the required items and explain the inspection without putting yourself in an unsafe position.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11, introduction; physical PDF page 276 (printed 276); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
You are about to leave the cab for the modernized walk-around inspection. What should you do first?
Correct answer: Set the parking brakes and place the transmission in neutral.
Secure the vehicle with the parking brakes and neutral before exiting. Use wheel chocks when needed; leaving an unsecured vehicle can be an unsafe act.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11, introduction; physical PDF page 276 (printed 276); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
The modernized inspection evaluates one axle. How should you prepare?
Correct answer: Learn the required inspection for every axle on the vehicle.
Although the test requires one axle inspection, Section 11 says to be prepared to perform the same inspection on all axles. The selected test portion is not a reason to ignore other equipment.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11, introduction; physical PDF page 276 (printed 276); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
How should you explain checking the critical fluids in the modernized engine-area inspection?
Correct answer: With the engine off, identify the level points and add/full marks.
Identify the applicable dipsticks or sight glasses and explain checking between the add and full marks with the engine off. Include the fluids appropriate to the vehicle, such as hydraulic brake fluid when equipped.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11.5.1, Critical Fluid Levels; physical PDF page 286 (printed 286); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
The engine is hot when you reach the cooling-system inspection. What should you avoid?
Correct answer: Removing the radiator cap while the engine is hot.
Opening a hot radiator cap can release hot pressurized coolant. The handbook specifically warns against removing it while the engine is hot; use the vehicle's safe inspection method.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11.5.1, Critical Fluid Levels; physical PDF page 286 (printed 286); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
How do you show that the dashboard turn-signal indicators work during the modernized inspection?
Correct answer: Operate each signal and observe its corresponding indicator.
The indicators must operate when the corresponding controls are used. Knowing where an indicator is located does not demonstrate that it functions.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11.1.1, Lighting Indicators; physical PDF page 277 (printed 277); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
An examiner helps check lights while you operate the controls. What remains your responsibility?
Correct answer: Specify each light and where the examiner should observe it.
You must direct the helper to the relevant locations and identify exactly which lights to check as you activate them. Dashboard indicators do not replace observing the exterior lamps.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11.4, Lights Operations Check; physical PDF page 285 (printed 285); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
The wiper blades look intact. What demonstration is still needed in the modernized inspection?
Correct answer: Operate the wipers and activate the windshield washers.
Check that the arms and blades are secure and undamaged, then demonstrate smooth wiper operation and functioning washers. Appearance alone does not prove either system works.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11.1.1, Wipers/Washers; physical PDF page 278 (printed 278); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
What shows the examiner that the heater and defroster function?
Correct answer: Operate their controls and demonstrate the systems working.
Section 11 calls for identifying, describing and demonstrating the heater and defroster. A clear windshield at one moment is not proof that the equipment operates.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11.1.1, Heater/Defroster; physical PDF page 279 (printed 279); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
A side-view camera lens is clean, but its display cannot be viewed properly from the driver's seat. Is the check complete?
Correct answer: No; the display must work and be adjusted for viewing.
For an equipped vehicle, check both the camera and the inside display. The image must be operable and viewable from the driving position, just as mirrors need proper adjustment.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11.1.1, Windshield and Traffic Monitoring Devices; physical PDF page 278 (printed 278); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
A fire extinguisher has a satisfactory charge but is lying loose on the cab floor. What does the inspection require?
Correct answer: It must be properly charged and secured in the vehicle.
The inspection checks both charge and secure mounting. An extinguisher being present is not enough if it is unsecured or unusable.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11.1.1, Emergency Equipment; physical PDF page 278 (printed 278); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
The vehicle uses circuit breakers rather than replaceable electrical fuses. How should you address the fuse check?
Correct answer: Explain that arrangement and identify the circuit breakers.
The handbook permits identifying the vehicle's circuit breakers when it is not equipped with electrical fuses. Explain the actual equipment rather than reciting an inapplicable fuse procedure.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11.1.1, Emergency Equipment; physical PDF page 278 (printed 278); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
Why are tractor and trailer parking brakes checked separately, when applicable?
Correct answer: To show that each parking-brake system can hold the combination.
The handbook describes gentle holding checks with the other parking-brake system released as applicable. Testing with both engaged could conceal that one system does not hold; use the vehicle's safe procedure.
Source: Maryland Commercial Driver’s License Manual, DL-151 (02/26), February 2026; Section 11.1.1, Parking and Trailer Brake Check; physical PDF page 279 (printed 279); public mirror of the Maryland manual; reviewed September 15, 2026. ↗
