ILLINOIS CLASS B NON-CDL EXAM -
2026 EDITION QUESTIONS AND
ANSWERS
1. What is the maximum Gross Vehicle Weight Rating (GVWR) of a trailer that an Illinois Class
B Non-CDL holder is permitted to tow?
A. 26,000 lbs
B. 15,000 lbs
C. 10,000 lbs
D. No limit as long as the GCWR is under 45,000 lbs
Answer: C
Conceptual Explanation: An Illinois Class B license allows the operation of a single vehicle
with a GVWR of 26,001 lbs or more, but you may only tow a trailer that has a GVWR of
10,000 lbs or less.
,2. In a dual air brake system, at what pressure should the low air pressure warning light and
buzzer activate?
A. Must activate before the pressure drops below 55 psi (or 60 psi depending on
manufacturer)
B. Exactly 100 psi
C. Between 20 and 45 psi
D. 80 psi
Answer: A
Conceptual Explanation: Federal and Illinois safety standards require the low air
pressure warning to activate before the pressure drops below 60 psi in at least one of the
systems.
3. When inspecting your tires during a pre-trip inspection, what is the minimum tread depth
required for the front (steering) tires?
A. 2/32 inch
B. 6/32 inch
C. 4/32 inch
D. 1/32 inch
Answer: C
, Conceptual Explanation: Steering axle tires require a minimum of 4/32 inch tread depth
for safety and traction. All other tires require at least 2/32 inch.
4. According to the Illinois Rules of the Road, how far ahead should you look while driving a
heavy vehicle in the city?
A. About two blocks
B. About one block
C. 50 feet
D. 1/4 mile
Answer: B
Conceptual Explanation: Heavy vehicle drivers should look 12-15 seconds ahead, which
equates to about one block in city driving.
5. What is the purpose of the ‘snubbing’ braking technique when traveling down a long, steep
grade?
A. To maintain a safe speed without overheating the brakes
B. To keep the vehicle in a high gear
C. To stop the vehicle as quickly as possible
D. To test the spring brakes
Answer: A
2026 EDITION QUESTIONS AND
ANSWERS
1. What is the maximum Gross Vehicle Weight Rating (GVWR) of a trailer that an Illinois Class
B Non-CDL holder is permitted to tow?
A. 26,000 lbs
B. 15,000 lbs
C. 10,000 lbs
D. No limit as long as the GCWR is under 45,000 lbs
Answer: C
Conceptual Explanation: An Illinois Class B license allows the operation of a single vehicle
with a GVWR of 26,001 lbs or more, but you may only tow a trailer that has a GVWR of
10,000 lbs or less.
,2. In a dual air brake system, at what pressure should the low air pressure warning light and
buzzer activate?
A. Must activate before the pressure drops below 55 psi (or 60 psi depending on
manufacturer)
B. Exactly 100 psi
C. Between 20 and 45 psi
D. 80 psi
Answer: A
Conceptual Explanation: Federal and Illinois safety standards require the low air
pressure warning to activate before the pressure drops below 60 psi in at least one of the
systems.
3. When inspecting your tires during a pre-trip inspection, what is the minimum tread depth
required for the front (steering) tires?
A. 2/32 inch
B. 6/32 inch
C. 4/32 inch
D. 1/32 inch
Answer: C
, Conceptual Explanation: Steering axle tires require a minimum of 4/32 inch tread depth
for safety and traction. All other tires require at least 2/32 inch.
4. According to the Illinois Rules of the Road, how far ahead should you look while driving a
heavy vehicle in the city?
A. About two blocks
B. About one block
C. 50 feet
D. 1/4 mile
Answer: B
Conceptual Explanation: Heavy vehicle drivers should look 12-15 seconds ahead, which
equates to about one block in city driving.
5. What is the purpose of the ‘snubbing’ braking technique when traveling down a long, steep
grade?
A. To maintain a safe speed without overheating the brakes
B. To keep the vehicle in a high gear
C. To stop the vehicle as quickly as possible
D. To test the spring brakes
Answer: A
