Free Illinois CDL practice test with 20 questions covering Illinois licensing steps plus federal air brakes, combination vehicles, and endorsement rules. Instant scoring.
These questions are for study practice only and are not official exam questions.
Question 1
1
An Illinois CDL holder is checking the vehicle's brake system during a pre-trip inspection. Why is this step important?
Question 2
2
An Illinois driver is completing a pre-trip inspection before hauling a load. What is the main purpose of this inspection?
Question 3
3
An Illinois CDL holder receives a second major disqualifying offense, such as a second DUI while operating a CMV. What is the federal disqualification outcome?
Question 4
4
An Illinois first-time Class B CDL applicant wants to skip Entry-Level Driver Training (ELDT) before the skills test. Is this allowed?
Question 5
5
How many questions does the Illinois CDL general knowledge test contain, per the Illinois CDL Study Guide?
Question 6
6
An Illinois CDL applicant needs to schedule a skills test appointment. What system is used to book it?
Question 7
7
What passing score applies to the Illinois CDL general knowledge test?
Question 8
8
What is the official study reference for Illinois CDL applicants preparing for the knowledge tests?
Question 9
9
An Illinois CDL holder wants to haul hazardous materials that require placarding. Which endorsement is required?
Question 10
10
An Illinois applicant needs a written knowledge test only, with no skills test that day. Which facility type should they visit?
Question 11
11
Under federal rules, what happens if an Illinois CDL holder's medical certificate lapses without renewal?
Question 12
12
How does Illinois generally administer the CDL skills (drive) test?
Question 13
13
Under federal rules, what best describes texting while operating a CMV for an Illinois CDL holder?
Question 14
14
An Illinois CDL holder is driving a combination vehicle and needs to check for a properly connected fifth wheel and coupling during the pre-trip inspection. Why is this step critical?
Question 15
15
An Illinois CDL holder under age 21 wants to drive interstate routes for a new trucking job. What is generally true under current federal rules?
Question 16
16
An Illinois CDL holder is asked what the Class B CDL covers. Which best describes it?
Question 17
17
In Illinois, as everywhere, what does the L restriction code mean on a CDL?
Question 18
18
Which state agency issues the commercial driver's license (CDL) in Illinois?
Question 19
19
An Illinois CLP holder wants to add the N (tank vehicle) endorsement while still on a CLP. Is this permitted?
Question 20
20
An Illinois CDL holder is driving a combination vehicle and experiences a trailer that begins to sway. What is generally the safest response?
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