ILLINOIS CLASS B NON-CDL PRACTICE
EXAM QUESTIONS AND ANSWERS
1. In Illinois, a Class B Non-CDL license is required for any single vehicle with a Gross Vehicle
Weight Rating (GVWR) of at least:
A. 26,001 pounds
B. 16,001 pounds
C. 10,001 pounds
D. 33,001 pounds
Answer: A
Conceptual Explanation: A Class B license is required for single vehicles with a GVWR of
26,001 lbs. or more, provided the towed unit is not more than 10,000 lbs.
2. What is the maximum weight a Class B Non-CDL holder can tow?
A. 10,000 lbs.
B. 15,000 lbs.
C. 5,000 lbs.
D. 20,000 lbs.
,Answer: A
Conceptual Explanation: Class B holders may tow a trailer, but its GVWR must not exceed
10,000 lbs.
3. Which of the following is the standard minimum tread depth for steering axle tires on a
heavy vehicle?
A. 4/32 inch
B. 1/32 inch
C. 6/32 inch
D. 2/32 inch
Answer: A
Conceptual Explanation: Front (steering) tires require at least 4/32 inch of tread depth,
while all other tires require 2/32 inch.
4. At what pressure should the low air pressure warning light and/or buzzer activate in an air
brake system?
A. At approximately 120 psi
B. At approximately 60 psi
C. At approximately 20 psi
D. At approximately 100 psi
Answer: B
, Conceptual Explanation: The law requires a warning signal to activate when air pressure
falls below 60 psi in either system of a dual air brake vehicle.
5. When driving a heavy vehicle, how far ahead should you typically look to identify potential
hazards?
A. 5 to 8 seconds
B. 20 to 30 seconds
C. 12 to 15 seconds
D. 2 to 4 seconds
Answer: C
Conceptual Explanation: Looking 12 to 15 seconds ahead (about one block in the city or
1/4 mile on the highway) is standard for large vehicle safety.
6. If you are forced to stop on a one-way or divided highway, where should you place your
three emergency warning triangles?
A. 100 feet in front, 10 feet behind, and 100 feet behind
B. 10 feet, 50 feet, and 100 feet behind the vehicle
C. 10 feet, 100 feet, and 200 feet toward the approaching traffic
D. 50 feet, 100 feet, and 500 feet behind the vehicle
Answer: C
EXAM QUESTIONS AND ANSWERS
1. In Illinois, a Class B Non-CDL license is required for any single vehicle with a Gross Vehicle
Weight Rating (GVWR) of at least:
A. 26,001 pounds
B. 16,001 pounds
C. 10,001 pounds
D. 33,001 pounds
Answer: A
Conceptual Explanation: A Class B license is required for single vehicles with a GVWR of
26,001 lbs. or more, provided the towed unit is not more than 10,000 lbs.
2. What is the maximum weight a Class B Non-CDL holder can tow?
A. 10,000 lbs.
B. 15,000 lbs.
C. 5,000 lbs.
D. 20,000 lbs.
,Answer: A
Conceptual Explanation: Class B holders may tow a trailer, but its GVWR must not exceed
10,000 lbs.
3. Which of the following is the standard minimum tread depth for steering axle tires on a
heavy vehicle?
A. 4/32 inch
B. 1/32 inch
C. 6/32 inch
D. 2/32 inch
Answer: A
Conceptual Explanation: Front (steering) tires require at least 4/32 inch of tread depth,
while all other tires require 2/32 inch.
4. At what pressure should the low air pressure warning light and/or buzzer activate in an air
brake system?
A. At approximately 120 psi
B. At approximately 60 psi
C. At approximately 20 psi
D. At approximately 100 psi
Answer: B
, Conceptual Explanation: The law requires a warning signal to activate when air pressure
falls below 60 psi in either system of a dual air brake vehicle.
5. When driving a heavy vehicle, how far ahead should you typically look to identify potential
hazards?
A. 5 to 8 seconds
B. 20 to 30 seconds
C. 12 to 15 seconds
D. 2 to 4 seconds
Answer: C
Conceptual Explanation: Looking 12 to 15 seconds ahead (about one block in the city or
1/4 mile on the highway) is standard for large vehicle safety.
6. If you are forced to stop on a one-way or divided highway, where should you place your
three emergency warning triangles?
A. 100 feet in front, 10 feet behind, and 100 feet behind
B. 10 feet, 50 feet, and 100 feet behind the vehicle
C. 10 feet, 100 feet, and 200 feet toward the approaching traffic
D. 50 feet, 100 feet, and 500 feet behind the vehicle
Answer: C
