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Illinois
Illinois CDL · Updated 2026

Illinois CDL Practice Tests

Illinois issues commercial driver licenses (CDLs) through the Office of the Illinois Secretary of State. The process starts with a Commercial Learner's Permit (CLP), includes federal Entry-Level Driver Training, and ends with a three-part skills test. You can schedule CDL exams online with the Illinois Fast Pass system.

Based on the official state DMV CDL manual.

Illinois CDL quick facts

Min age (intrastate)

18 to drive a CMV within Illinois.

Min age (interstate)

21 to drive across state lines.

CLP hold period

14 days minimum before the skills test.

General Knowledge test

~50 Qs; 80% to pass.

Sources: Illinois CDL Study Guide (DSD CDL 10) Illinois SOS CDL Overview Illinois SOS ELDT page

Illinois CDL FAQ

How old do I have to be to get an Illinois CDL?

You must be at least 18 to get an Illinois CDL for driving inside Illinois. You must be 21 to drive across state lines or carry hazardous materials.

How long do I have to hold the Illinois CLP?

You must hold the Commercial Learneru0027s Permit for at least 14 days before you can take the CDL skills test.

What does an Illinois CDL cost?

The Illinois Secretary of State charges $50 for the Commercial Learneru0027s Permit and $60 for the CDL.

Do I need ELDT in Illinois?

Yes. You must finish federal Entry-Level Driver Training with an FMCSA-registered provider before scheduling the CDL skills test.

How do I schedule an Illinois CDL skills test?

Use the Illinois Fast Pass system at ilsos.gov. It lets you book pre-trip, basic control, and on-road exams 24/7.

Where do I find the Illinois CDL Study Guide?

The Illinois CDL Study Guide is available as a free PDF on the Illinois Secretary of State website at ilsos.gov.