Am I required to attend a Maryland truck driving school in order to obtain a CDL? Is there any mandatory training prior to getting a Maryland CDL?
Attending and graduating from a truck driving school is not an actual requirement to obtain a Maryland CDL; however, it is highly recommended. Due to the nature of the profession and the driving involved, comprehensive training as well as studying is definitely a good idea. If you choose not to attend a truck driving school and take the CDL tests, your chances of success will be much lower.

What are the differences between all the CDL classes?
Maryland (like most states) has three different CDL classes: A, B, and C. The Class A CDL allows you to drive a vehicle that weighs 26,000 pounds or more, with the ability to tow more than 10,000 pounds. 

Class A also enables you to drive operate vehicles classified in the lower classes.

Class B allows you to drive vehicles that weigh 26,000 pounds or more but can tow under 10,000 pounds.

Class C is for vehicles that weigh under 26,000 pounds, carry 16 or more passengers, or transports hazardous materials. Endorsements are required for both hazardous materials transport and the transport of passengers.

Are exceptions ever made for the required physical exam?
All individuals applying for a CDL are required to pass the Department of Transportation physical. Exemptions are made only for individuals with certain health problems that would prevent them from passing the physical, but can still operate a commercial truck safely and effectively. Such ailments would include things like diabetes, a missing limb, or other health concern.

What are the requirements for getting an endorsement in the state of Maryland?
Each endorsement has its own specific test you must pass in order to get that endorsement. You are required to score 80% or better in order to pass and each has a certain fee you must pay. The hazardous materials (HazMat) endorsement is by far the most difficult to obtain. In addition to passing the test, you must have a background check performed (which typically takes two to eight weeks to complete), you must be fingerprinted and pay all the required fees, which total $94.

What is the next step after passing the first written exam?
Once you successfully pass the written test, you will receive a learner’s CDL permit, which allows you to practice driving with a qualified CDL holder. You will then schedule and take your skills test which is comprised of three different sections: the pre-trip inspection, basic skills and maneuvering, and the on-road test. If you fail any portion of the skills test, you will have to take the test and pay the required fees again.