Who runs CDL licensing in Illinois
The Illinois Secretary of State (SOS) — Driver Services Department, CDL Division — issues commercial driver's licenses and learner permits; the Secretary of State's facilities are what other states call the DMV. You start from a valid Illinois driver's license: the CLP is issued to an Illinois license holder moving up to a CDL classification. Written tests are taken at SOS facilities; the skills and drive tests are by appointment only, at designated CDL facilities — Elk Grove Village, West Chicago, Springfield (Dirksen), South Holland, Rockford, Peoria and a dozen others around the state. Illinois also licenses third-party testers, but they test their own employees (companies, municipalities, fire departments) — as an individual applicant, you test with the state.
The Illinois CDL path, step by step
Hold an Illinois license and study the CDL Study Guide
Your study source is the official Illinois CDL Study Guide (DSD CDL 10), free from the Secretary of State online and at facilities. You must be at least 18 for an Illinois CLP or CDL — and at 18–20 your license is intrastate only; 21 is required to drive interstate or carry passengers.
Pass the knowledge tests and get your CLP
At an SOS facility you present acceptable identification and proof of legal presence, self-certify your medical category, and take the computerized knowledge tests: the General (Core) Knowledge test has 30 questions, and you need at least 80% on each applicable test (90% for the School Bus test). Per the Secretary of State's CDL program page, the CDL knowledge tests are administered in English only — an audio format (the computer reads the test) is available, and you can apply for an oral test read by SOS personnel. Passing earns you the Commercial Learner's Permit for $50, valid one year from issuance. A CLP holder never drives alone — a properly licensed driver rides along at all times.
Self-certify and handle the medical
Illinois uses the four federal codes: NI (non-excepted interstate), EI (excepted interstate), NA (non-excepted intrastate) and EA (excepted intrastate). Choosing NA or EA puts a K restriction on your license — no interstate driving. NI drivers present a current DOT Medical Examiner's Certificate at the facility before anything else proceeds; the exam must be by an examiner on FMCSA's National Registry, and since mid-2025 examiners file certificates electronically to the state. Facility staff cannot choose your category for you — if you are unsure, the SOS tells you to ask your (future) employer.
Complete ELDT — and wait for it to post. All of it.
First-time Class A/B applicants, B-to-A upgrades and first P, S or H endorsements require Entry-Level Driver Training with a provider in FMCSA's Training Provider Registry. Illinois's trap is administrative: your results appear on your driving record only when the provider has submitted all three portions — Theory, Range and Road — and you cannot schedule the skills test until the completed ELDT is recorded. Facilities cannot accept a paper certificate as proof. If your school dawdles on paperwork, your test date dawdles with it — ask the school how fast it reports completions before you sign. How to vet a school is covered in How to Choose a CDL School — and Not Get Scammed.
Wait 14 days, then take the skills test — in a truck you bring
Federal law requires 14 calendar days between CLP issuance and skills testing (you may book ahead for a date after the wait). The test runs in order — Pre-Trip Inspection, Basic Control Skills (straight line backing, offset backing, parallel parking), then the Road Test on an approved route — and a portion you pass is kept, as long as all three finish within the same CLP period. You provide the vehicle, and Illinois is strict about it: legible GVWR/GCWR manufacturer tags are mandatory — no tags, no test — plus valid registration, plates, insurance, current safety certification, and a proper seat and seat belt for the examiner. No video or recording devices are allowed during the test. One more clock trap: if you get a corrected CLP (adding or removing an endorsement mid-process), a fresh 14-day wait starts.
Pick up your CDL
You leave the facility with a temporary paper credential valid for 90 days; the permanent card is mailed within 15 business days.
What Illinois charges: state fees
Illinois keeps its schedule short — and publishes no separate knowledge-test or skills-test fee at all:
| Item | Fee |
|---|---|
| Commercial Learner's Permit (CLP) — original or renewal, for Illinois non-CDL license holders | $50 |
| CLP for a driver who already holds an Illinois CDL (changing classification or adding an endorsement) | $5 |
| CDL renewal or transfer from another state | $60 ($50 at age 69+) |
| CDL upgrade or correction (classification, endorsement or restriction change) | $5 |
| Separate knowledge-test or skills-test fee | None published — the only extra testing charges are the additional fees assessed after three-failure waiting periods (amount not published) |
Tuition is the real cost: private CDL schools in the U.S. generally charge about $3,000–$10,000 for a Class A program, with many full programs in the $4,000–$7,000 range — plus the DOT medical exam. The full breakdown is in How Much Does CDL Training Cost?
Illinois specifics worth knowing
- Renewing a CLP is a full restart. Let the year run out and a new CLP means retaking all the written tests and paying again — and any skills-test portions you already passed are forfeited. Knowledge test scores themselves are valid for at most one year, and all drive testing must finish before they expire. Finish inside the first permit; there is no extension.
- The three-failure rule. Fail any CDL exam 3 times and you wait 30 days; 6 times, 90 days; 9 times, a full year — with additional fees after each wait (the waits apply to the exam you failed). Fail the road test six times and you must also bring a medical report from a medical specialist before a seventh attempt. Preparation is cheaper than repetition.
- HazMat has two gates before its test — and they repeat. A TSA security threat assessment must be on file before you may take the HazMat written test, and HazMat ELDT must also be completed first. At every renewal, H/X holders repeat both the assessment and the test — the SOS advises starting 60 days before the CDL expires.
- Military: Illinois goes further than most states. Under the Even Exchange program — Illinois was the first state in the nation to use this federal authority — qualifying service members with listed military driving specialties can have both the knowledge and skills tests waived (form DSD CDL 27). A separate Skills Test Waiver (form DSD CDL 26) waives the road test only. Both cover the initial CDL only, require service within the past 12 months, and are submitted by email to the CDL Division with your commanding officer.
- Moving to Illinois with a CDL. You surrender the out-of-state license and pay the $60 transfer fee — and, unlike most states, Illinois still makes transfer applicants pass the General (Core) Knowledge written test. Transfers get no CLP and no 14-day wait, need no ELDT at equal or lesser class, and a HazMat endorsement needs a current TSA assessment on file before the Illinois test. Leave Illinois and surrender your license there, and the chain breaks: coming back means a brand-new license with all testing repeated.
Compare states or read the nationwide sequence in our step-by-step guide to getting a CDL, the New York CDL guide and the New Jersey CDL guide.
Training in Illinois? We will match you with a registered school
CDL Students USA connects future drivers with FMCSA-registered CDL schools in their area — including, where available, schools with instructors or support in your language. The service is free for students: tell us your Illinois city and when you want to start, and a partner school will call you with its program, price and schedule. Чикаго и пригороды — один из крупнейших центров русскоязычных и кыргызскоязычных трак-драйверов в США: заявка на русском — Обучение на CDL на русском языке →, на кыргызском — CDL окуусу кыргыз тилинде →
Sources: Illinois Secretary of State — CDL program page (path, fees, English-only testing statement, three-failure rule, military programs), CDL FAQ (ages, medical categories, testing locations), ELDT page (all-portions-recorded rule, scheduling bar), HazMat page (TSA-before-test rule, renewal repeats), legal presence page (non-domiciled resumption 2026-08-31, H-2A/H-2B/E-2 categories), official fee schedule, forms DSD CDL 25 (skills test rules) and DSD CDL 26/27 (military waivers); Illinois Vehicle Code 625 ILCS 5/6-118 (fee structure); FMCSA — CLP rules (49 CFR 383.25), Entry-Level Driver Training (49 CFR part 380). Note: two Secretary of State pages have differed on Spanish-language CDL testing; the CDL program page's English-only statement is what we publish — confirm at your facility. Illinois fees and rules can change — confirm on ilsos.gov before you apply.
For CDL schools
CDL Students USA is an independent student referral and marketing partner. We deliver pre-screened applicants who are ready to train in your area — and you pay only for students who enroll and start. No upfront fees, no monthly retainers, no long-term contract.
Partnership inquiries: partners@cdlstudentsusa.com