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Illinois General Knowledge Test

We know Illinois winters make driving tough—our test covers the rules you’ll need on I-55.

140
Questions
80%
To Pass
60
Minutes

Select Test Mode

DMV Simulator

Timed test with no hints. Simulates the real DMV exam experience.

  • 60 minute time limit
  • No hints or explanations

Learning Mode

Study mode with hints and explanations. Take your time to learn.

  • No time limit
  • Explanations available

About the Illinois General Knowledge Test

Illinois has some of the busiest highways in the country. You'll drive on I-80, I-55, and I-94 daily. You need to know the rules for safe driving in heavy traffic. Winter weather hits hard here—snow and ice demand special techniques. Our test mirrors the official Illinois DMV exam.

You'll get 50 questions on vehicle inspection, basic control, and traffic laws. Each question comes from the Illinois CDL manual. Pass with confidence. We've designed this practice test to match the real thing. Take it as many times as you need.

Illinois's agriculture and manufacturing industries mean you'll haul grain and freight. Our questions cover cargo securement and weight limits. You'll also learn about rural road hazards like deer crossings. Study hard and save yourself a retake fee.

What This Test Covers

  • Vehicle inspection – Illinois requires a pre-trip inspection checklist; skip it and you fail.
  • Basic control – Mastering shifting and turning on narrow Illinois streets.
  • Traffic laws – Know your headlight rules on rural two-lane roads.
  • Safe driving – Illinois has heavy truck traffic on interstates; you'll learn spacing and speed.
  • Hazard awareness – Watch for deer crossings in central Illinois farmlands.
  • Emergency procedures – How to handle a blowout on an icy Illinois bridge.

Study Tips

Don't just read the manual—practice with our test. The Illinois CDL exam asks specific questions about state regulations. You'll see questions on cargo securement for Illinois grain haulers. Focus on sections about air brakes and combination vehicles if you're after a Class A license.

Make an appointment at your local DMV. Walk-ins aren't always welcome. Bring your current CDL permit and proof of residency. Study in short bursts—our 50-question test takes about an hour. Retake it until you consistently score 80% or higher.

Illinois DMV Information

You'll take the test at a Secretary of State facility. Fees are $60 for the written test. Some locations like Chicago's North Avenue facility require appointments. Bring your learner's permit and a medical certificate. The test is available in English and Spanish.

Don't show up without an appointment at busy sites. Use the online scheduler or call ahead. You'll get your results immediately after the test. Pass and you're ready to move on to the skills exam.

Frequently Asked Questions

You'll have 50 questions. You need 40 correct to pass (80%).

Yes, most locations require an appointment. Book online or call your local Secretary of State office.

It's $60. You'll pay when you take the test. Cash or card works.

Yes, the test is available in Spanish. You can also request an interpreter.

Your permit lasts one year. You can renew it for a fee if you don't pass the skills test in time.

Related Resources

Download Illinois CDL Handbook Illinois DMV Website

Other Illinois CDL Practice Tests

Air Brakes
Combination Vehicles
Hazmat
Tanker
Passenger
School Bus
Doubles & Triples
Pre-Trip Inspection

Test Details

  • State: Illinois
  • Test: General Knowledge Test
  • Questions: 140
  • Passing Score: 80%
  • Time Limit: 60 minutes
  • Cost: Free

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Quick Topics

  • Pre-trip inspection
  • Traffic laws
  • Safe driving techniques