TN CDL General Knowledge Test
Tiedowns and Cargo Requirements
- Tiedowns required for a 20-foot load:
✔️2 tiedowns.
- Tiedowns per length of cargo:
✔️1 tiedown per 10 feet.
- Minimum tiedowns required per load:
✔️2 tiedowns regardless of load length.
Braking and Vehicle Control
- Wet brakes effect:
✔️May apply unevenly, work weakly, or grab.
- Heating up brakes:
✔️Maintain light pressure on brakes to dry them out.
- Turn off retarders:
✔️In poor weather conditions.
- Purpose of retarders:
✔️Reduce the need for braking.
Safety Definitions and Systems
- Definition of a hazard:
✔️Any road user or condition that presents a possible danger.
, - Parts of the steering system:
✔️Tie rod, gear box, steering shaft.
- Suspension system part:
✔️Leaf spring.
Tire and Braking System Regulations
- Minimum tire tread depth for all tires except front:
✔️2/32 inch.
- Antilock braking system (ABS):
✔️Prevents wheels from locking when braking hard.
- B:C fire extinguisher usage:
✔️Not for burning materials like wood or paper.
Driving Techniques
- Starting down a steep downgrade:
✔️Shift into low gear and use engine braking.
- Total stopping distance calculation:
✔️Perception distance + Reaction distance + Braking distance.
- Starting movement without rolling backward:
✔️Use parking brake, engage the clutch, apply hand valve.
- Doubling speed effect on stopping distance:
Tiedowns and Cargo Requirements
- Tiedowns required for a 20-foot load:
✔️2 tiedowns.
- Tiedowns per length of cargo:
✔️1 tiedown per 10 feet.
- Minimum tiedowns required per load:
✔️2 tiedowns regardless of load length.
Braking and Vehicle Control
- Wet brakes effect:
✔️May apply unevenly, work weakly, or grab.
- Heating up brakes:
✔️Maintain light pressure on brakes to dry them out.
- Turn off retarders:
✔️In poor weather conditions.
- Purpose of retarders:
✔️Reduce the need for braking.
Safety Definitions and Systems
- Definition of a hazard:
✔️Any road user or condition that presents a possible danger.
, - Parts of the steering system:
✔️Tie rod, gear box, steering shaft.
- Suspension system part:
✔️Leaf spring.
Tire and Braking System Regulations
- Minimum tire tread depth for all tires except front:
✔️2/32 inch.
- Antilock braking system (ABS):
✔️Prevents wheels from locking when braking hard.
- B:C fire extinguisher usage:
✔️Not for burning materials like wood or paper.
Driving Techniques
- Starting down a steep downgrade:
✔️Shift into low gear and use engine braking.
- Total stopping distance calculation:
✔️Perception distance + Reaction distance + Braking distance.
- Starting movement without rolling backward:
✔️Use parking brake, engage the clutch, apply hand valve.
- Doubling speed effect on stopping distance:
