Free CDL Practice Tests & ELDT Training

CDL Study Buddy is the leading free resource for Commercial Driver License preparation, offering comprehensive study materials for aspiring truck drivers across all 50 states. Our platform provides everything you need to pass your CDL written exam on the first attempt, including practice tests, ELDT theory courses, state CDL handbooks, and instructional training videos.

Getting your CDL opens doors to a rewarding career in the trucking industry. Whether you are pursuing a Class A license to drive tractor-trailers, a Class B license for straight trucks and buses, or adding endorsements like Hazmat, Tanker, or Passenger, our free practice tests will prepare you for success.

The Federal Motor Carrier Safety Administration requires all new CDL applicants to complete Entry Level Driver Training before taking their skills test. Our FMCSA-compliant ELDT theory courses cover the mandatory curriculum for Class A, Class B, and upgrade training, plus endorsement courses for Hazmat, Passenger, and School Bus. Upon completion, your training is automatically reported to the Training Provider Registry.

Our CDL practice tests cover all knowledge test categories required by state DMVs: General Knowledge is mandatory for all applicants. Air Brakes is required for vehicles with air brake systems. Combination Vehicles is needed for Class A tractor-trailer drivers. Additional endorsement tests include Hazmat, Tanker, Passenger, School Bus, and Doubles/Triples.

Start your CDL journey today with our free resources. Choose your state to access state-specific practice tests, download your official CDL handbook, and watch instructional videos covering pre-trip inspections, backing maneuvers, and air brake operations.