Illinois CDL General Knowledge Practice Test 3 2026

Whether you are chasing a semi or a straight truck, the written portion is identical - and that is the point of this set. Use it as a CDL Class A practice test and as a CDL Class B practice test at the same time, because Illinois Class A, B, and C applicants all answer the same 50 general knowledge questions. Your class is decided by the skills exam and the vehicle you bring, not by the written test.

This 2026 CDL A practice test rotation leans on the topics that separate scores: total stopping distance, following distance in seconds, cargo securement, coupling awareness, and hazard recognition. Looking for test questions for CDL prep that actually track the exam? These do.

Passing means 40 of 50 correct, an 80 percent standard set federally and applied by the Illinois Secretary of State. Keep the Illinois CDL Manual at hand, and repeat this Illinois CDL practice test until a Class A or Class B result stops depending on luck.

Keep going:

• Illinois CDL Practice Test
• Illinois CDL Practice Test 2
• Illinois CDL Practice Test 4
• Illinois CDL Practice Test 5
• Illinois Air Brakes Practice Test
• Illinois CDL Combination Practice Test
• Illinois CDL Pre-Trip Inspection Practice Test
• Illinois Hazmat Practice Test
• Illinois Class A CDL Practice Test
• Illinois CDL Practice Test

Every question traces back to the Illinois CDL Manual - skim the right-of-way and signs chapters before your retake.