Welcome to the MO CDL Practice Test section.
These Missouri DOR tests we designed to be used with the 2024 Missouri CDL Maunal to get you ready to pass the CDL exams. These tests includes General Knowledge, Air Brakes, Combination, Doubles & Triples, Tanker, Hazerdous Material, Passenger, and School Bus. We have also created Pre Trip practice tests to get you stated on the Pre Trip inspection exam that follows passing your written exams.
We have three options to help you on your path. Our CDL Practice Tests offer immediate feedback showing you the question, your answer, the correct answer, and an explaination. We also have a CDL Quick Review which take the form of flashcards, and the CDL Exam Simulator that will give you chance at a real testing environment
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General Knowledge -
More Information The general knowledge test is the first of several tests that you will have to complete in order to get your CDL. The questions cover general information about commercial vehicles, driving, and vehicle inspections. The test has a total of 50 questions, and requires at least 40 correct answers to pass.
Air Brakes -
More Information You must have an Air brake endorsem*nt on your driver's license to drive a vehicle equipped with an air brake system. This test will test your knowledge of the function, parts, and braking distance of air brakes. The test will consist of 25 questions, and at least 20 correct answers are needed to pass.
Combination -
More Information The combination endorsem*nt allows you to drive a vehicle with a power unit and one trailer. This test will cover the "ins and outs" of operating articulated vehicles. The exam consists of 25 questions, and requires at least 20 correct to pass.
Hazardous Material -
More Information The Hazardous Material endorsem*nt allows the driver to operate a vehicle containing items such as poisons, explosives, flammables, etc. You will also have to pass the TSA Hazardous Material Threat Assessment to get this endorsem*nt. There are 30 questions, 24 correct required to pass.
Tanker -
More Information The Tanker endorsem*nt allows the driver to operate a vehicle weighing more than 26,000 pounds designed to transport any liquid or gaseous material within a tank that is permanently or temporarily attached to the vehicle. There are 20 questions, 16 correct required to pass.
Doubles / Triples -
More Information The Doubles/Triples endorsem*nt is required for drivers to pull 2 trailers (doubles) or 3 trailers (triples) connected to a single power unit. There are 20 questions on this test, and 16 correct answers are required to pass.
Passenger -
More Information Bus drivers must have a commercial driver's license with a passenger endorsem*nt in order to operate a vehicle which seats 16 or more, including the driver. There are 20 questions on this test, and 16 correct answers are required to pass.
School Bus -
More Information School Bus Endorsem*nt is required for any driver who operates a school bus. After the permit tests the training can be only completed by a local school district. There are 20 questions on this test, and 16 correct answers are required to pass.
Pre Trip -
More Information The Pre-Trip exam is an oral exam where you are expected to check the vehicle parts to insure it is safe for road use. The amount of parts you need to check increase with the size of the vehicle, and by type of vehicle.
Free Pre-trip Videos -
More Information The Pre-Trip exam is an oral exam where you are expected to check the vehicle parts to insure it is safe for road use. The amount of parts you need to check increase with the size of the vehicle, and by type of vehicle.
