South Carolina CDL practice
Selected knowledge practice, not a complete licensing course or practical training.
South Carolina CDL Practice Test 1
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Question reference: sc-cdl-general-001
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South Carolina CDL practice
Start with 20 questions. Learn from each explanation and save missed questions for another try.
All topics and study tools
Short general-knowledge tests
Practice 1
20 questions · explanations after each answer
Practice 2
20 questions · explanations after each answer
Practice 3
20 questions · explanations after each answer
Practice 4
20 questions · explanations after each answer
Practice 5
16 questions · explanations after each answer
Practice 6
16 questions · explanations after each answer
Practice 7
16 questions · explanations after each answer
Practice 8
16 questions · explanations after each answer
Practice 9
16 questions · explanations after each answer
Practice 10
16 questions · explanations after each answer
Practice 11
16 questions · explanations after each answer
Practice 12
20 questions · explanations after each answer
Practice 13
20 questions · explanations after each answer
Focus on a topic
Inspection and vehicle defects
16 focused questions
Control, backing and shifting
16 focused questions
Mirrors, warnings and stopping
16 focused questions
Traction, speed and space
16 focused questions
South Carolina CDL licensing
18 focused questions
Hazards, weather and emergencies
64 focused questions
Cargo, weight and securement
48 focused questions
Fitness, alcohol and drugs
20 focused questions
Hazardous-material awareness
20 focused questions
Air brakes
60 focused questions
Combination vehicles
64 focused questions
Doubles and triples
32 focused questions
Tank vehicles
28 focused questions
Passenger transport
56 focused questions
School buses
64 focused questions
Hazardous materials
96 focused questions
Inspection and practical-skills preparation
80 focused questions
What this practice covers
The general-knowledge question set has 232 records: 64 on everyday commercial-vehicle control, 16 on South Carolina licensing, 64 on hazards and emergencies, 48 on cargo and securement, 20 on driver fitness, and 20 on hazardous-material awareness. The thirteen short tests use different questions; topic quizzes and random practice use these questions. A separate 60-question air-brake question set has three 20-question sets and its own 25-question mix. A separate 64-question combination-vehicle question set has four 16-question sets and a 20-question mix. Doubles/triples practice adds 32 questions in two 16-question sets; tanker practice adds 28 questions in two 14-question sets. Both have separate 20-question random mixes. Passenger practice adds 56 questions in four 14-question sets and a separate 20-question mix. School-bus practice adds 64 questions in four 16-question sets and a separate 25-question mix. Dedicated hazardous-material practice adds 96 questions in six 16-question sets and its own 20-question mix. Written practical-skills preparation adds 80 questions in four sets covering the cab and brakes, bus and coupling inspection, basic-control maneuvers and on-road driving. Two additional medical self-certification questions join the existing licensing topic. They are a focused supplement outside the unchanged numbered general sets and 232-record random-practice question selection; this editorial grouping does not mean the subjects are excluded from an official exam. Together these question sets contain 714 records. These written exercises do not provide required entry-level driver training or a hands-on assessment. Neither the awareness question set nor the dedicated hazardous-material quizzes replace required endorsement training, screening or the official test. Use the full official manual for the rest of your preparation.
Our untimed 50-question study mix uses a 40-correct target. SCDMV states an 80% knowledge-test passing score; the 50-question length is an editorial study choice, not a verified official exam count. The air-brake and school-bus mixes use 20 correct out of 25; the combination-vehicle, doubles/triples, tanker, passenger and hazardous-material mixes use 16 out of 20; these are also editorial study formats. The practical-skills preparation sets have no exam passing target: a written quiz cannot qualify you on a practical maneuver.
Safety references use the currently posted 179-page SCDMV CDL manual, whose body is marked March 2025. Internal question records identify the relevant section, rule and PDF page; the quiz presents the answer explanation. Federal tire and drug provisions cite the 2025 annual CFR edition, cross-checked with the posted manual; stopped-vehicle warnings, phone restrictions, detailed cargo minimums, alcohol rules, hazmat paperwork and specific air-brake equipment and breakaway-braking standards cite eCFR. The manual recommends two tiedowns even for small cargo; questions explicitly asking about federal minimums use the size, weight and blocking exceptions in 49 CFR 393.110. Air-brake exercises keep the manual’s released and applied leakage tests separate, and distinguish equipment-specific warning and adjustment rules. Combination questions cover handling, trailer air lines, coupling, uncoupling, ABS and inspection. They distinguish a wheel-lock skid from normal ABS operation and keep the breakaway-braking exceptions explicit. Follow the manufacturer’s procedure for the equipment you use. Doubles/triples practice is not permission to operate a restricted combination on a particular route. Tank questions distinguish the greater-than-119-gallon individual threshold from the at-least-1,000-gallon aggregate threshold and retain the narrow empty-storage-container exception. A tank endorsement does not replace a required hazardous-material endorsement. Passenger and school-bus questions distinguish South Carolina law from handbook recommendations, including school-driver certification, pupil-stop signals, railroad stops and student crossing procedures. Current federal inspection-report and passenger-bus hazardous-material rules take precedence over older summaries in the manual. Hazardous-material questions distinguish general awareness from endorsement study, and use current federal provisions for reporting deadlines, cargo attendance and emergency equipment. Older handbook summaries do not override those provisions. Practical-skills questions use Sections 11–13 of the 2025 Testing System, including all four air-system inspection checks and South Carolina’s no-stop, no-backup forward-offset instructions. Read the manual’s official diagrams and follow the examiner’s instructions and your vehicle’s specifications. Review date: September 21, 2026.
Medical qualification update, reviewed September 29, 2026: ordinary non-excepted interstate operation requires current medical certification. The driver self-certifies the operation type as required, while the medical provider reports examination results electronically through FMCSA’s National Registry. SCDMV cannot manually update those medical results. Read SCDMV DL-405A, revised March 6, 2026.
Original practice scenarios, not a copy of an official exam. Reading and quizzes do not replace required entry-level driver training or hands-on instruction.