Ready CDL PrepPractice TestReady CDL Prep
Get the app
Illinois · ILChange state

Free Illinois (IL) CDL practice test 2026

The tests that apply in Illinois, drawn from the shared bank plus the questions written specifically for the Illinois manual.

Illinois CDL test at a glance

What Illinois does its own way. The full set is in the app.

Skills test version
Not confirmed — check the Illinois CDL manual.
Checklist during the pre-trip
Not confirmed — check the Illinois CDL manual.
Low air warning in the pre-trip inspection (skills test)
Usually before 55 psi (the AAMVA model). Confirm in the Illinois manual.
Low air warning on the written air brakes test
Before pressure drops below 60 psi, as the Illinois manual's air brakes chapter says
General Knowledge test
Typically 50 questions, 40 correct to pass (the AAMVA model most states use)
Governor cut-out and the rest of the air brake check
In the app
The pre-trip script Mr. Egg teaches, with Illinois's numbers
In the app
Every question where the Illinois manual differs
In the app
See all Illinois rules in the app

From Illinois’s own CDL manual and licensing pages. Source

The Illinois CDL manual, chapter by chapter

Tests that apply in Illinois

General KnowledgeRequired for every CDL applicant, whatever class or endorsement you are after.
See the test
Air BrakesThe section applicants fail most often. Pressure figures differ by state manual.
See the test
Combination VehiclesNeeded for Class A tractor-trailer, including coupling and uncoupling order.
See the test
Pre-Trip InspectionWhat the examiner expects you to point at and say out loud, in order.
See the test
Hazardous MaterialsH endorsement: placarding, shipping papers and the segregation table.
See the test
Doubles & TriplesT endorsement: coupling order, converter dollies and trailer sway.
See the test
Tank VehiclesN endorsement: surge, baffles and the rules for outage.
See the test
Passenger TransportP endorsement: loading, standee lines and emergency exits.
See the test
School BusS endorsement: danger zones, loading and unloading, railroad crossings.
See the test

A sample question

One example, answer shown. Practicing the rest happens in the app.

How much sleep does the manual say adults need to maintain alertness?

  1. 8 to 9 hours
  2. 10 to 11 hours
  3. 6 to 7 hours
  4. 5 to 6 hours

Eight to nine hours is what the manual gives, against the less than five hours a day the long-haul study actually measured.

This answer is not the same in every state

New York's manual says the average person needs seven or eight hours of sleep every 24 hours; the AAMVA model edition, California and Oregon say adults need 8 to 9 hours. Serve the state-scoped version where one exists.

Go by the manual your state publishes — that is what your examiner grades.

Handbook section 2.11.2
Practice every Illinois question

Illinois CDL questions people ask

Most states, Illinois included, follow the AAMVA model test: typically 50 questions, with 40 correct needed to pass. Check the current Illinois manual for the exact count before test day.