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