CDL Permit Test Study Guide – Complete Preparation for
the Commercial Driver’s License Exam
Description:
This study guide provides a thorough overview of the topics covered in the CDL
(Commercial Driver’s License) permit test. It includes key concepts such as
general knowledge, air brakes, combination vehicles, and safe driving practices.
Designed to help learners master both the written and practical components, this
guide is ideal for anyone preparing to earn their CDL permit quickly and
confidently.
Keywords:
CDL permit
commercial driver’s license
general knowledge
air brakes
combination vehicles
driving safety
truck driving
exam preparation
,practice test
driver training
Texas CDL Permit Test Study Guide: 100 Questions & Answers
Section 1: Vehicle Inspection (10 Questions)
1. What is the most important reason for performing a pre-trip inspection?
A) To avoid getting a ticket
B) To ensure the vehicle is safe to operate
C) To practice for the CDL test
D) To save fuel
2. What should you do if you find a safety defect during your pre-trip
inspection?
A) Note it in your logbook and drive slowly.
B) Report it to your supervisor and get it fixed before driving.
C) Only fix it if it's a major issue.
D) Ignore it if you are running late.
3. During a pre-trip inspection, you should check that the brake pads are:
A) Greasy and slippery.
,B) Worn thin or missing.
C) Free of oil, grease, and with sufficient thickness.
D) Made of metal.
4. What is "brake fade"?
A) The brakes getting too cold.
B) Brakes overheating and losing their stopping power.
C) The parking brake being set.
D) The air pressure warning light coming on.
5. What is the minimum tread depth for front tires on a commercial vehicle?
A) 1/32 inch
B) 2/32 inch
C) 4/32 inch
D) 6/32 inch
6. During an in-cab inspection, what is the first thing you should check?
A) The parking brake is set and the wheels are chocked.
B) The oil pressure gauge.
C) The fuel level.
D) The radio.
, 7. What is the purpose of the spring brakes?
A) To help you stop faster.
B) To apply the brakes automatically if the air pressure gets too low.
C) To make the ride smoother.
D) To assist in turning.
8. A low air pressure warning signal should activate:
A) Before the air pressure falls below 50 psi.
B) When you are low on fuel.
C) Only when the parking brake is on.
D) When the oil pressure is low.
9. When checking the suspension during a pre-trip, you should look for:
A) Cracked or broken leaves in the spring.
B) A leaking shock absorber.
C) Broken or missing parts.
D) All of the above.
10. Why should you check the cargo as part of your pre-trip inspection?
A) To make sure you like what you're hauling.
B) To ensure it is secure, balanced, and covered properly.
the Commercial Driver’s License Exam
Description:
This study guide provides a thorough overview of the topics covered in the CDL
(Commercial Driver’s License) permit test. It includes key concepts such as
general knowledge, air brakes, combination vehicles, and safe driving practices.
Designed to help learners master both the written and practical components, this
guide is ideal for anyone preparing to earn their CDL permit quickly and
confidently.
Keywords:
CDL permit
commercial driver’s license
general knowledge
air brakes
combination vehicles
driving safety
truck driving
exam preparation
,practice test
driver training
Texas CDL Permit Test Study Guide: 100 Questions & Answers
Section 1: Vehicle Inspection (10 Questions)
1. What is the most important reason for performing a pre-trip inspection?
A) To avoid getting a ticket
B) To ensure the vehicle is safe to operate
C) To practice for the CDL test
D) To save fuel
2. What should you do if you find a safety defect during your pre-trip
inspection?
A) Note it in your logbook and drive slowly.
B) Report it to your supervisor and get it fixed before driving.
C) Only fix it if it's a major issue.
D) Ignore it if you are running late.
3. During a pre-trip inspection, you should check that the brake pads are:
A) Greasy and slippery.
,B) Worn thin or missing.
C) Free of oil, grease, and with sufficient thickness.
D) Made of metal.
4. What is "brake fade"?
A) The brakes getting too cold.
B) Brakes overheating and losing their stopping power.
C) The parking brake being set.
D) The air pressure warning light coming on.
5. What is the minimum tread depth for front tires on a commercial vehicle?
A) 1/32 inch
B) 2/32 inch
C) 4/32 inch
D) 6/32 inch
6. During an in-cab inspection, what is the first thing you should check?
A) The parking brake is set and the wheels are chocked.
B) The oil pressure gauge.
C) The fuel level.
D) The radio.
, 7. What is the purpose of the spring brakes?
A) To help you stop faster.
B) To apply the brakes automatically if the air pressure gets too low.
C) To make the ride smoother.
D) To assist in turning.
8. A low air pressure warning signal should activate:
A) Before the air pressure falls below 50 psi.
B) When you are low on fuel.
C) Only when the parking brake is on.
D) When the oil pressure is low.
9. When checking the suspension during a pre-trip, you should look for:
A) Cracked or broken leaves in the spring.
B) A leaking shock absorber.
C) Broken or missing parts.
D) All of the above.
10. Why should you check the cargo as part of your pre-trip inspection?
A) To make sure you like what you're hauling.
B) To ensure it is secure, balanced, and covered properly.
