You must take the knowledge, skills, and vision tests when you apply for an original commercial driver's license or upgrade to a different class of license.  

CDL Knowledge Tests

The type of knowledge tests you must pass depends on the type of commercial vehicle you intend to drive and the cargo you expect to carry. You may take the commercial driver's license (CDL) knowledge test at any SCDMV branch.

Find an SCDMV branch
The CDL knowledge tests can be time consuming. The SCDMV does not allow a customer to test after 4:00 p.m.

You will find more information on the CDL knowledge test below:

  • General Knowledge - All CDL applicants
  • Combination Vehicles - Class A combination vehicles
  • Air Brakes - If your vehicle has air brakes. (If you do not take this test, you may only drive vehicles without air brakes and be given a K restriction).
  • Passenger Transport - If you operate vehicles designed to carry at least 16 people.
  • Hazardous Materials - If you want to haul hazardous materials or waste requiring placarding.
  • School Bus - If you want to transport pre-primary, primary, or secondary school students from home to school, from school to home, or to and from school-sponsored events.
  • Tanker -If you want to haul liquids or gas within a tank or tanks having an individual rated capacity of more than 119 gallons and an aggregate rated capacity of 1,000 gallons or more that is either permanently or temporarily attached to the vehicle or the chassis.
  • Doubles/Triples - If you want to pull double or triple trailers

Written material or electronic devices of any kind are not allowed in the knowledge test area.

Truck Driver Training Schools

CDL Skills Test
You may hear a skills test called a road test.

You must wait 14 days from the date your original commercial learner’s permit was issued before you are eligible to take the skills test.

There are three parts to the commercial driver's license (CDL) skills test. You must successfully complete the test in this order: 

  1. Vehicle Inspection Test
  2. Basic Vehicle Control Skills Test
  3. On-Road Driving Test

Do not schedule a skills test until you are prepared to pass all three parts. Study the CDL Manual for the test.

Schedule a CDL skills test

You must take the test in a vehicle that represents the type of CDL you're applying for. The examiner will verify the class of vehicle by checking the manufactures plate. All vehicles used for the CDL skills test must have the manufacture plate to be used for testing. Only you and an SCDMV examiner are allowed in or around the vehicle during the test. If scheduling appointments for multiple individuals in a day and they intend to use the same vehicle, please do not schedule the appointments back-to-back.

Please arrive 30 minutes before your scheduled appointment time.  If you arrive 10 minutes after your appointment time, it may be cancelled.

Where can I take the commercial driver's license skills test?

If you are applying for a commercial driver's license (CDL) you must take your skills test at one of the designated SCDMV branches Monday through Friday.

  1. Bennettsville
  2. Columbia – Shop Road
  3. Greenville – Saluda Dam Road
  4. Greenwood
  5. Ladson
  6. Myrtle Beach - Commons
  7. North Augusta
  8. Rock Hill
  9. Sumter

Find an SCDMV branch
Valid Inspection Sticker

Unless exempt, every commercial motor vehicle used in interstate commerce that weighs more than 10,000 pounds must have a valid inspection sticker. If a commercial vehicle does not have a valid inspection sticker, it does not meet qualifications and you cannot take the skills test.

Retaking the Skills Test

You must pass all portions of the CDL skills test in sequential order. You may receive credit (bank scores) for portions of the CDL skills test that are successfully completed during the initial issuance of the CLP and as long as the CLP is valid.

If you fail any portion of the skills test, it is $25 for another skills tests.

If you cannot complete any portion of the vehicle inspection or basic skills tests once it starts for reasons beyond your control such as inclement weather, the vehicle fails, or the examiner gets sick, the $25 fee will not be charged when you return.

Return Times if you Fail the Skills Test

If you fail a CDL skills test on your first or second attempt, you must wait one week to be retested.

If you fail a CDL skills test on the third attempt or after, you must wait 60 days to be retested.

Schedule a CDL skills test
FMCSA regulation 396.17