General Knowledge Study Guide
Build your foundation in safe operation, vehicle control, communication, speed and space management.
- Look 12–15 seconds ahead
- Maintain safe following distance
- Adjust speed before curves
- Inspect cargo and securement
Start PracticeCDL Study Guides
Focused summaries that show what to study, what to remember and how to reinforce each subject with practice.
Air Brakes Study Guide
Understand air-system components, inspections, warning devices and safe braking techniques.
- Know compressor and governor functions
- Test the low-air warning
- Recognize brake fade
- Use controlled braking techniques
Combination Vehicles Guide
Prepare for coupling, uncoupling, trailer inspection, rollover prevention and offtracking.
- Inspect fifth-wheel locking jaws
- Connect air and electrical lines correctly
- Use smooth steering inputs
- Check trailer height before coupling
Pre-Trip Inspection Guide
Organize your inspection into a repeatable sequence and explain safety-critical components clearly.
- Follow the same sequence every time
- Name the component
- Describe its condition
- Explain why it matters for safety
HazMat Endorsement Guide
Review communication rules, shipping papers, placards, loading restrictions and emergency response.
- Identify the hazard class
- Keep papers accessible
- Follow segregation rules
- Protect the public during emergencies
ELDT Theory Readiness Guide
Review the major theory areas required of new entry-level commercial drivers.
- Hazard perception
- Fatigue and wellness
- Hours of service
- Post-crash responsibilities