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How to Get Your Illinois CDL License

The actual step-by-step process, from application to full license — not just what's on the exam. Confirm anything time-sensitive (fees, forms) with Illinois SOS directly.

  1. Hold a valid Illinois driver's license

    You must already hold a valid noncommercial Illinois driver's license. You must be at least 18 to drive commercially within Illinois, or 21 to cross state lines or transport hazardous materials, under federal rules that apply nationwide.

  2. Get your DOT medical certificate

    Complete a DOT medical examination and Medical Examination Report (Form 649-F), then self-certify to the Illinois SOS that you're medically qualified to operate a commercial vehicle, and receive your Medical Examiner's Certificate.

    • Medical Examination Report (Form 649-F)
    • Medical Examiner's Certificate

  3. Complete entry-level driver training (ELDT)

    Federal rule requires training through a provider listed on the FMCSA Training Provider Registry before you can take the CDL skills test, for your first CDL, an endorsement upgrade, or a vehicle-class upgrade.

  4. Apply for your CLP and pass the knowledge test(s)

    At a Secretary of State facility, provide proof of legal presence and pay the $50 processing fee. Pass the general knowledge test, plus the combination vehicles and air brakes knowledge tests if applicable to the class and vehicle you're training on.

    • Proof of legal presence
    • Medical Examiner's Certificate

  5. Hold the CLP at least 14 days

    Federal rule requires holding your CLP for a minimum of 14 days before you're eligible to schedule the skills test. Illinois' CLP is valid for a full year — notably longer than the 180-day validity used in many other states.

  6. Complete behind-the-wheel ELDT training

    Alongside the theory portion, federal rule requires documented behind-the-wheel training hours and proficiency assessments from your ELDT provider before the skills test.

  7. Schedule and pass the skills test

    Book a second Secretary of State appointment for the skills test, which covers a pre-trip vehicle inspection and an on-road driving evaluation for the class of CDL you're applying for.

  8. Receive your CDL

    Once you pass, the Secretary of State issues your Class A, B, or C commercial driver's license, with any endorsements (such as passenger, school bus, or hazardous materials) reflecting the additional tests you passed.

Notes

  • Illinois' CLP is valid for 1 year, longer than the 180-day validity common in many other states.
  • Endorsements like passenger (P), school bus (S), or hazardous materials (H) require their own knowledge tests, and for P/S/H, their own ELDT curriculum, in addition to the general knowledge test.
  • Exact fees and required documents change over time — confirm the current process on the official Illinois SOS website before your appointment.

Last reviewed: 2026-07-14