It’s never easier than obtaining an SD CDL with South Dakota CDL Practice Test. All the questions are designed to match with the latest SD CDL Manual book version to increase your passing opportunity. In addition, you can choose which subject you want to practice in 9 main categories of CDL includings General Knowledge, Air Brakes, Combination, Doubles & Triples, Tanker, Hazardous Material, Passenger, School Bus, and Pre-trip Inspection.