CDL GENERAL KNOWLEDGE TEST LATEST QUESTIONS
2026 – VERIFIED Q&A WITH RATIONALES FROM
CERTIFIED EXAMINER ACTUAL EXAM PREP 100% FAST
REVISION
Truck Driver Certification Examination
Examining Board Content Areas Covered
1. Vehicle Inspection
2. Basic Control of Vehicle
3. Safe Driving Practices
4. Cargo Safety
5. Air Brakes (General Knowledge Level)
6. Hazard Perception
7. Emergency Procedures
8. Road Signs and Regulations
9. Night and Adverse Driving Conditions
10. Driver Responsibility and Laws
Instructions: Choose the correct answer for each question.
1. What is the most important reason for doing a vehicle inspection before
driving?
A. To save fuel
B. To check for safety issues
C. To improve speed
D. To clean the vehicle
, Answer: B. To check for safety issues
Ensures the vehicle is safe to operate and prevents breakdowns or accidents.
2. When should you check tire pressure?
A. After driving
B. Only in winter
C. Before driving
D. Once a month
Answer: C. Before driving
Checking before driving ensures tires are safe and properly inflated.
3. What is the proper hand position on the steering wheel?
A. One hand only
B. 10 and 2 o’clock
C. 6 and 12
D. Anywhere comfortable
Answer: B. 10 and 2 o’clock
Provides maximum control and quick response capability.
4. What does a flashing red traffic light mean?
A. Slow down
B. Stop completely
C. Yield
D. Proceed with caution
Answer: B. Stop completely
It must be treated the same as a stop sign.
5. What is the safest way to back a truck?
A. Quickly
B. Without mirrors
C. With a helper
D. Honking constantly
Answer: C. With a helper
A spotter reduces blind spot risks.
, 6. What is the main cause of skidding?
A. Good tires
B. Oversteering
C. Driving too fast
D. Light braking
Answer: C. Driving too fast
Excess speed reduces traction and control.
7. What should you do if a tire blows out?
A. Brake hard
B. Hold steering wheel firmly
C. Turn sharply
D. Accelerate quickly
Answer: B. Hold steering wheel firmly
Maintains control and prevents swerving.
8. What is hydroplaning?
A. Driving uphill
B. Tires losing contact with road due to water
C. Driving too slow
D. Braking too hard
Answer: B. Tires losing contact with road due to water
Occurs when water prevents tire grip.
9. What is the purpose of mirrors?
A. Decoration
B. See behind and sides
C. Check speed
D. Adjust seat
Answer: B. See behind and sides
Critical for awareness and safe lane changes.
10.When should headlights be used?
A. Only at night
B. Only in rain
2026 – VERIFIED Q&A WITH RATIONALES FROM
CERTIFIED EXAMINER ACTUAL EXAM PREP 100% FAST
REVISION
Truck Driver Certification Examination
Examining Board Content Areas Covered
1. Vehicle Inspection
2. Basic Control of Vehicle
3. Safe Driving Practices
4. Cargo Safety
5. Air Brakes (General Knowledge Level)
6. Hazard Perception
7. Emergency Procedures
8. Road Signs and Regulations
9. Night and Adverse Driving Conditions
10. Driver Responsibility and Laws
Instructions: Choose the correct answer for each question.
1. What is the most important reason for doing a vehicle inspection before
driving?
A. To save fuel
B. To check for safety issues
C. To improve speed
D. To clean the vehicle
, Answer: B. To check for safety issues
Ensures the vehicle is safe to operate and prevents breakdowns or accidents.
2. When should you check tire pressure?
A. After driving
B. Only in winter
C. Before driving
D. Once a month
Answer: C. Before driving
Checking before driving ensures tires are safe and properly inflated.
3. What is the proper hand position on the steering wheel?
A. One hand only
B. 10 and 2 o’clock
C. 6 and 12
D. Anywhere comfortable
Answer: B. 10 and 2 o’clock
Provides maximum control and quick response capability.
4. What does a flashing red traffic light mean?
A. Slow down
B. Stop completely
C. Yield
D. Proceed with caution
Answer: B. Stop completely
It must be treated the same as a stop sign.
5. What is the safest way to back a truck?
A. Quickly
B. Without mirrors
C. With a helper
D. Honking constantly
Answer: C. With a helper
A spotter reduces blind spot risks.
, 6. What is the main cause of skidding?
A. Good tires
B. Oversteering
C. Driving too fast
D. Light braking
Answer: C. Driving too fast
Excess speed reduces traction and control.
7. What should you do if a tire blows out?
A. Brake hard
B. Hold steering wheel firmly
C. Turn sharply
D. Accelerate quickly
Answer: B. Hold steering wheel firmly
Maintains control and prevents swerving.
8. What is hydroplaning?
A. Driving uphill
B. Tires losing contact with road due to water
C. Driving too slow
D. Braking too hard
Answer: B. Tires losing contact with road due to water
Occurs when water prevents tire grip.
9. What is the purpose of mirrors?
A. Decoration
B. See behind and sides
C. Check speed
D. Adjust seat
Answer: B. See behind and sides
Critical for awareness and safe lane changes.
10.When should headlights be used?
A. Only at night
B. Only in rain
