Free Maryland CDL Combination Vehicles Practice Test 2023

You have to pass the Maryland CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for a good Maryland CDL Practice Test source for your coming CDL test? You are in the right place. Our practice test is a great resource for beginners. The test is designed for you to have exactly the experience of the exam as you will be more familiar with both the test format and the subject. Our CDL practice test covers topics ranging from combination vehicle maintenance to safely driving a complex rig. Each question is based on the official Maryland CDL Manual so you can be sure that the information in our test is accurate and relevant to your examination. In addition, each question has a detailed explanation so that it is very useful for you to learn from your mistakes. Preparing well before test day with questions and content that we cover. Start with our Free Maryland CDL Combination Vehicles Practice Test today and walk out with your endorsement!

Our CDL practice tests:
Based on 2021 MD commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
MD CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
Before you back under a trailer, make sure that:
A function of the tractor protection valve is:
Hose couplers are also referred to as:
The higher the center of gravity of your truck, the:
When traveling under 40 mph, how much distance should you leave, at minimum, from the car in front of you?
You have coupled with a semitrailer, where should you put the iron trailer supports before driving away?
The shut-off valves at the back of the last trailer should be:
To prevent water and dirt from entering the air system, hose couplers can be attached to dummy couplers or:
When uncoupling, make sure that the parking area:
When driving a combination vehicle with multiple trailers or dollies, all air shut-off valves except the last one at the back must be:
What is the term for a commercial vehicle habit of swinging wide on turns?
The locking jaws should be around:
The best and earliest way to recognize that your trailer has started to skid is:
All of these are part of the final 3 steps of uncoupling the trailer except:
You have a major leak in the service line, and you put on the brakes. Service air will escape and cause the:
When uncoupling the trailer, after you shut off the trailer air supply and lock the trailer brakes, you should:
Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
What gear should the tractor engine be in after you uncouple the trailer and are inspecting the trailer supports?
Air and electrical lines from the tractor to the trailer should be:
A specific item to check on a sliding fifth wheel is: