How to Get a CDL in Illinois 2026: Step-by-Step Guide

Illinois handles commercial licensing through the Secretary of State. The process is straightforward once you separate the knowledge-test stage from the skills-test stage: obtain the correct base license and medical status, pass the required knowledge tests, receive the CLP, complete any required Entry-Level Driver Training, then take the skills and road tests in a representative vehicle.

Illinois CDL process in order

1. Hold a valid Illinois non-CDL or CDL base license. Illinois requires the base license to remain valid for the full CLP period.
2. Self-certify the type of commercial driving you plan to do. If your category requires medical qualification, use an examiner listed on the FMCSA National Registry.
3. Pass the General/Core knowledge test plus any classification, air-brake, or endorsement tests required for the vehicle and work you intend to perform.
4. Receive the Illinois CLP. The current Secretary of State rule gives the original CLP a one-year validity period.
5. Complete required ELDT through an FMCSA-registered provider if you are obtaining Class A or B for the first time, upgrading B to A, or obtaining a first-time P, S, or H endorsement.
6. Hold the CLP at least 14 days before skills/drive testing. You may schedule a test date in advance as long as the appointment is beyond the waiting period.
7. Pass the skills test in a properly classified representative vehicle, then complete issuance of the CDL.

The one-year CLP and 14-day wait are different rules

Two separate clocks matter. Illinois currently says the original CLP is valid for one year, while federal law requires an initial or upgrading CLP holder to wait at least 14 days before taking skills and drive tests. An additional CLP after the one-year cycle requires the applicable testing and fees again.

Medical reporting changed in 2025

Illinois requires CDL holders and CLP applicants to self-certify their medical driving category. For medical certificates issued after June 30, 2025, the medical examiner submits the certificate information electronically. Do not build your test-day plan around hand-delivering a new paper certificate.

ELDT is not the same thing as the CLP knowledge test

ELDT applies to specific first-time and upgrade situations. Illinois says the required ELDT must be completed before a covered driver is scheduled for the skills test; a first-time Hazardous Materials applicant must complete the H training before the H knowledge test. Use the FMCSA Training Provider Registry to verify the provider rather than relying only on a school advertisement.

Skills-test vehicle choice matters

The vehicle you use determines the class, endorsements, and possible restrictions on the finished CDL. Bring a vehicle that properly represents the privilege you want, including the correct combination and brake equipment where applicable.

Study before you visit a facility

Illinois uses a 30-question General/Core computerized test and additional tests as required for class, brakes, or endorsements. Study the current Illinois CDL manual and use practice questions to identify weak areas before testing.

Sources: Illinois Secretary of State (CDL/CLP, testing, medical, scheduling and commercial driver training); FMCSA for federal ELDT and drug/alcohol rules. Reviewed October 2026.