CDL Written Knowledge Test | Utah Driver License Division (DLD) Web Site

Commercial Driver License (CDL) Written Knowledge Test

There are different written knowledge tests depending on the class of CDL you are applying for and the endorsements needed. All CDL written knowledge tests are closed book, multiple-choice questions and must be passed with 80% or better. All CDL written knowledge tests are administered in English only, and the use of any translation materials is prohibited.

Three (3) tests make up the core testing for a CDL. These tests are included in the $52.00 license application fee. Each test may be taken up to two (2) times before a second test fee of $26.00 will be required. Taking endorsement tests is optional. Endorsement fees are $9.00 for two (2) attempts on written knowledge tests. Additional two (2) test attempts are $9.00.

Click here to study the CDL driver manual.

If you are ready to fill out the driver license application and schedule an appointment to obtain your CDL, click here.

This test is optional and can be taken by applicants for a Class A, B, or C CDL. This test is required if planning on driving a vehicle equipped with air brakes. If the written knowledge test is not taken and the driving skills test is not complete in an air brake-equipped vehicle, an "L" restriction will be placed on the license, restricting the applicant from driving a CMV not equipped with air brakes.

The air brake written knowledge test is 25 questions.