Illinois
Illinois CDL Practice Tests – All Endorsements

Based on the official 2026 CDL manual

Refineries all over the state of Illinois mean that there is a lucrative career in hauling refined oil. If this, or any of the other jobs that require an Illinois commercial driver’s license (CDL) in the Prairie State, interest you, you’ll want to be prepared for the exam. We have everything covered to ensure that you are fully ready to pass on your first visit.

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IL commercial driver's license
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How to get your CLP (Commercial Learner’s Permit)
View detailed explanation for IL
Select your  CDL knowledge exams (0) CDL knowledge exams (0)
Complete our theory exam prep program
We send your ELDT theory certificate to TPR
Pass official written exam(s)
Get your CLP

Аlready have a CDL permit and need ELDT only? Check ELDT only program.

General Knowledge
695 questions
IL CDL Diagnostic Test
30 questions
General Knowledge Test 1
50 questions
General Knowledge Test 2
50 questions
General Knowledge Test 3
50 questions
General Knowledge Test 4
50 questions
General Knowledge Test 5
50 questions
General Knowledge Test 6
50 questions
General Knowledge Test 7
50 questions
General Knowledge Test 8
50 questions
General Knowledge Test 9
50 questions
General Knowledge Test 10
50 questions
General Knowledge Test 11
50 questions
General Knowledge Test 12
50 questions
General Knowledge Test 13
95 questions
General Knowledge Marathon
All 695 questions
General Knowledge Exam Simulator
30 random questions
General Knowledge Cheat Sheet
Class A/B ELDT Video Course
Video Audio PDF
Basic Operations
  • Orientation
  • Control Systems and Dashboards
  • Pre- and Post-Trip Inspection
  • Basic Operations
  • Shifting and Transmissions
  • Backing and Docking
Safe Operating Practices
  • Visual search
  • Communication
  • Distraction
  • Speed management
  • Space management
  • Night operation
  • Extreme conditions
Advanced Operating Procedures
  • Hazard Perception
  • Skid Control
  • Railroad-Highway Grade Crossing
Vehicle Systems
  • Identification and diagnosis of malfunctions
  • Roadside inspections
  • Maintenance
Non-Driving Operations
  • Handling and documenting cargo
  • Environmental compliance
  • Hours of Service
  • Fatigue and wellness awareness
  • Post-crash procedures
 
  • External communication
  • Whistleblower and coercion
  • Trip planning
  • Drugs and alcohol
  • Medical requirements
Watch demo part
Video Audio PDF
Pre-Trip Inspection
91 questions
Pre-Trip Inspection Test 1
20 questions
Pre-Trip Inspection Test 2
20 questions
Pre-Trip Inspection Test 3
20 questions
Pre-Trip Inspection Test 4
31 questions
Pre-Trip Inspection Marathon
All 91 questions
Pre-Trip Inspection Exam Simulator
20 random questions
Pre-Trip Inspection Cheat Sheet
Pre-Trip Inspection Video by Apex CDL Institute
01m 05s
How to perform a CDL Class A Pre-Trip Inspection
22m 40s
Pre-Trip Inspection Video
by CDL College
31m 58s
Full Exterior and in Cab PTI by West Georgia Tech College
16m 13s
Air Brake Tests for Combination Vehicles
05m 22s
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FREE E-Book

Many people arrive at the DMV overconfident and underprepared because they fail to do some of the simple things that would allow them to pass easily. What follows are the 10 steps that every aspiring commefcial driver should take to prepare for his or her official CDL or CLP knowledge exam.

10 Things You Should Do Before Your CDL Knowledge Exam

Many people arrive at the DMV overconfident and underprepared because they fail to do some of the simple things that would allow them to pass easily. What follows are the 10 steps that every aspiring commefcial driver should take to prepare for his or her official CDL or CLP knowledge exam.

Open E-Book
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Steven Litvintchouk, M.S., Chief Educational Researcher at Driving-Tests.org

Reviewed for legal and handbook accuracy

Steven Litvintchouk

M.S., Chief Educational Researcher (ACES member)

Last verified for accuracy on

Andrei Zakhareuski, Co-founder & CEO, Driving-Tests.org

Test design and learning experience oversight

Andrei Zakhareuski

Co-founder & CEO, Driving-Tests.org

Questions are created and maintained by the Driving-Tests.org content team following our multi-layer editorial process and updated whenever the Illinois DMV changes its handbook or website information. Official sources we check: