South Dakota CDL Practice Test
Free practice questions for the South Dakota commercial driver license written exams — general knowledge, air brakes, combination vehicles, and every endorsement.
South Dakota's Department of Public Safety manages the state's driver licensing system, ensuring that all new drivers possess a comprehensive understanding of traffic laws and safe driving practices before operating a vehicle on public roads. The written knowledge test is a crucial component of obtaining your instruction permit in South Dakota. Whether you're a teenager preparing for driving independence or an adult obtaining your first license, passing the knowledge test proves your understanding of South Dakota's traffic regulations, road signs, and defensive driving principles. South Dakota offers an important advantage: teens who complete an approved driver education course within the past year are completely exempt from the written knowledge test. For those who must test, South Dakota provides accessible testing at multiple locations with support for both English and Spanish.
About this section of the South Dakota test
South Dakota's commercial driver license (CDL) program requires passing multiple written knowledge tests covering general CDL knowledge and air brakes. Applicants must be at least 18 years old for intrastate operation or 21 for interstate. The first step is obtaining a commercial learner's permit by passing knowledge tests and a vision exam. CDL endorsements are available for doubles/triples, tanker vehicles, passenger transport, and hazardous materials. Note that a CDL does not permit motorcycle operation unless combined with a Class 3 license (e.g., A3 for Class A vehicles plus personal vehicle operation including motorcycles).
Start practicing
Open the South Dakota practice test — pick car, motorcycle, or CDL, then drill quick quizzes or full simulated exams.
Read the source manual
Browse the official South Dakota driver manual — every practice question deep-links to the page that explains the rule.
Frequently asked questions
- How many questions are on the South Dakota permit test?
- The South Dakota knowledge test has 25 multiple-choice questions covering rules of the road and safe driving practices. Note: Teens who completed driver education courses recently may be exempt from this test.
- What's the passing score for the South Dakota written test?
- You must score at least 80% on the South Dakota knowledge test, which means getting at least 20 correct answers out of 25.
- How much does the South Dakota written knowledge test cost?
- The South Dakota driver license fee is $28. This fee is waived if you are exempt from the written test (which applies to most teens who completed an approved driver education course within the past year).
- How old do I have to be to take the South Dakota permit test?
- South Dakota does not specify a minimum age for the knowledge test itself, but you must meet other licensing requirements. Notably, teens under 18 who completed an approved driver education course within the past year are exempt from taking the written test.
- Can I take the South Dakota DMV test in Spanish or other languages?
- Yes, South Dakota offers the written knowledge test in English and Spanish. Application forms and driver manuals are also available in Spanish, making the licensing process accessible to Spanish-speaking residents.
- How many times can I retake the South Dakota written test?
- South Dakota allows multiple retakes of the knowledge test. You can schedule another appointment after a failed attempt by contacting your local DPS driver licensing office or calling (605) 773-6883.
- Is the South Dakota permit test online or in person?
- The South Dakota knowledge test is administered in person at designated DPS driver licensing exam stations and offices. There is no online testing option available.
- What documents do I need to bring to the South Dakota DMV?
- You need proof of identity (birth certificate or U.S. passport), Social Security card, two proofs of residential address (utility bill, mortgage document, or bank statement), and a completed license application form. If under 18, a parent or guardian must sign the application in person or before a notary public.
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