Core commercial driving rules, vehicle inspection steps, and safety concepts tested on the CDL general knowledge exam.
45 cards · basic cards · AI-written, checked twice. Edit anything.
- What is the primary purpose of a pre-trip inspection?
- To identify any defects or safety issues before operating the vehicle
- How often must a CDL driver perform a vehicle safety inspection?
- Before each shift or before operating the vehicle
- True or false: You can skip a pre-trip inspection if another driver just finished one
- False. Each driver is personally responsible for their own inspection
- What three main components should you check first in a pre-trip inspection?
- Lights, reflectors, and mirrors for visibility and operation
- What are the three main parts of an air brake system?
- Service brake, parking brake, and emergency brake
- What does ABS stand for?
- Anti-lock Braking System
- How do you test air brakes on a commercial vehicle?
- Build pressure, release the parking brake, apply service brakes, then check response
- What is the minimum safe following distance at 55 mph?
- Eight to ten seconds behind the vehicle ahead
- How should you stop a heavy vehicle in an emergency?
- Brake in a straight line, avoiding locked wheels or jackknife
- What causes brake fade in commercial vehicles?
- Excessive heat from continuous or heavy braking
- What is the minimum tire pressure for most commercial truck tires?
- Follow the manufacturer's specification, typically 80-105 psi
- What does a bulging or bubbling tire sidewall indicate?
- The tire must be replaced immediately due to internal structural failure
- What is the minimum tread depth for drive and trailer tires?
- 4/32 of an inch
- What is the minimum tread depth required for steering tires?
- 2/32 of an inch
- What should you do if you experience a tire blowout while driving?
- Grip the steering wheel firmly and gradually decelerate without swerving