Maryland CDL Practice Tests - All Endorsements

Freight in Maryland moves through some of the busiest chokepoints on the East Coast. The Port of Baltimore keeps container and ro-ro cargo flowing off the ships and onto chassis, feeding a web of warehouses that supply the dense DC and Baltimore metro. I-95 carries a relentless stream of tractor-trailers up and down the Northeast corridor, and chemical and industrial loads circle the Chesapeake, so drivers who hold Tanker and HazMat endorsements find steady work here. Combination Vehicles skills matter too, since port and distribution runs lean heavily on long trailers.

Every one of those jobs starts with the same written exam. The CDL General Knowledge test asks 50 questions and requires 80 percent to pass, which works out to 40 of 50 correct. That threshold comes from the FMCSA, so it holds the same in every state. Because this exam is what earns your Commercial Learner’s Permit, studying for your CDL permit and studying CDL general knowledge are one and the same effort. Applicants for Class A, B, and C all take this identical written test. The class you end up with is set by the vehicle you drive and the skills test you complete, not by anything on the written side.

Use the practice tests above to pressure-test what you actually know. The questions span pre-trip inspection, basic vehicle control, shifting, following distance and safe speed, hazard awareness, and how to handle skids, fires, and other emergencies. When a topic keeps catching you, open the Maryland Commercial Driver’s License Manual and read that section as your study guide until the logic clicks and sticks.

Beyond General Knowledge, each endorsement has its own knowledge test: Air Brakes, Combination Vehicles, HazMat, Tanker, Doubles/Triples, Passenger, and School Bus. Around the port and the chemical corridor, HazMat and Tanker tend to open the most doors, and combination-vehicle knowledge pays off on the long trailers that dominate warehouse routes. Take a Maryland CDL practice test for the endorsements your target job requires, and keep at it until your scores are consistent rather than lucky. When your permit is in hand and your knowledge is solid, book your CDL skills test with the Maryland MVA and take the next step toward the road.