Free South Dakota CDL practice test with real commercial driving questions. Prepare for your South Dakota CDL exam — General Knowledge, Air Brakes, HazMat, and all endorsements. Updated for 2026.
The South Dakota DPS CDL knowledge test has 50 questions for General Knowledge, with additional 20–30 question tests for each endorsement (Air Brakes, HazMat, Tanker, etc.). You need 80% to pass each section. South Dakota allows learner's permits at age 14, one of the youngest minimum ages nationally.
The South Dakota DPS knowledge exam tests your understanding of South Dakota traffic laws, road signs, and safe driving practices. DriveAce covers every topic you'll encounter on test day.
Vehicle inspection, cargo management, driving techniques, and documentation for South Dakota CDL.
Air brake system components, inspection, emergency stops, and maintenance tested by the South Dakota DPS.
Hazardous materials classification, placarding, loading/unloading rules for South Dakota CDL endorsement.
Liquid surge, rollover prevention, loading and unloading procedures for South Dakota tanker endorsement.
Coupling, uncoupling, stability, and safe driving with multiple trailers under South Dakota CDL rules.
Passenger safety, school bus operations, railroad crossings, evacuation for South Dakota CDL.
The South Dakota DPS CDL General Knowledge test has 50 questions. You need 80% (40 correct) to pass. Each CDL endorsement — Air Brakes, HazMat, Tanker, Doubles/Triples, Passenger, School Bus — has an additional 20–30 question test, each also requiring 80%.
DriveAce covers all major South Dakota CDL endorsements: General Knowledge, Air Brakes, HazMat (Hazardous Materials), Tanker Vehicles, Doubles/Triples, Passenger Vehicles, and School Bus. All practice questions are based on South Dakota DPS CDL requirements.
Yes — DriveAce offers free CDL practice questions for South Dakota. Study General Knowledge and endorsement-specific questions that mirror the real South Dakota DPS CDL exam. Full access to all practice questions is available for a one-time $19.99 fee.
You need to score 80% on the South Dakota CDL General Knowledge test and each endorsement test. DriveAce practice tests use the same 80% passing threshold, so you always know when you're ready for the real exam at the South Dakota DPS.
Join thousands of drivers who passed their South Dakota CDL exam on the first try with DriveAce. No subscription. No ads. Just the knowledge you need.
Start Free Practice Test →$19.99 one-time for full access. 20 free questions included.