CDL Study Blog
Expert guides, test prep tips, and career advice for CDL drivers. Written by Jack Mahana, CDL instructor and founder of CDL Study Buddy.
JM
Reviewed by Jack Mahana, CDL Instructor (13+ years)
Last verified: August 2026 · FMCSA-compliant content
Air Brakes8 min
How to Pass the CDL Air Brakes Test: Every PSI Number You Need
Read more
Hazmat10 min
CDL Hazardous Materials Endorsement Guide: Hazmat Test Prep
Read more
Combination Vehicles8 min
CDL Combination Vehicles: Complete Guide to Coupling and Uncoupling
Read more
General Knowledge9 min
CDL General Knowledge Test: What's on It and How to Study
Read more
School Bus10 min
CDL School Bus Endorsement: Complete Guide
Read more
Tanker8 min
CDL Tanker Endorsement Guide: Liquid Surge, Bulk Tanks, Test Prep
Read more
Passenger8 min
CDL Passenger Endorsement: Complete Guide to Passing the Test
Read more
ELDT10 min
How to Get a CDL: Complete Guide to ELDT Training Requirements
Read more
Pre-Trip Inspection9 min
CDL Pre-Trip Inspection: The Complete Walkaround Guide
Read more
Study Tips7 min
CDL Study Guide: How to Use a CDL Handbook to Pass Your Test
Read more
Driving Skills7 min
CDL Shifting and Transmissions: Manual, SmartWay, Auto Explained
Read more
Driving Skills7 min
Backing and Docking a Tractor-Trailer: Step-by-Step Guide
Read more
Safe Driving6 min
CDL Speed Management and Space Management: The 6-Second Rule
Read more
Safe Driving7 min
Night Driving and Extreme Weather Conditions for CDL Drivers
Read more
Safe Driving6 min
Skid Control and Jackknife Prevention: What Every CDL Driver Must Know
Read more
Safe Driving5 min
Railroad Crossings for CDL Drivers: Rules, Signs, and Procedures
Read more
Regulations8 min
CDL Hours of Service (HOS): Complete Guide to ELD Mandates
Read more
Regulations6 min
CDL Drug and Alcohol Testing: What You Need to Know
Read more
Regulations7 min
CDL Medical Card Requirements: DOT Physical Guide
Read more
Driving Skills6 min
Trip Planning for CDL Drivers: Routes, Fuel, and Time Management
Read more
Hazmat6 min
Hazmat Placarding Guide: When You Need Placards and What They Mean
Read more
Hazmat6 min
Hazmat Emergency Response Procedures for CDL Drivers
Read more
School Bus5 min
School Bus Danger Zones: Where Children Are Most At Risk
Read more
School Bus6 min
School Bus Loading and Unloading Procedures
Read more
Passenger5 min
Passenger Vehicle Pre-Trip Inspection for CDL
Read more
Safe Driving5 min
CDL Visual Search and Communication Techniques
Read more
Safe Driving5 min
Distracted Driving Rules for CDL Drivers
Read more
Regulations6 min
CDL Roadside Inspections: What Inspectors Look For
Read more
Maintenance5 min
CDL Vehicle Maintenance and Malfunction Diagnosis
Read more
Cargo5 min
Handling and Documenting Cargo: CDL Guide
Read more
Regulations4 min
Environmental Compliance for CDL Drivers
Read more
Safe Driving5 min
Post-Crash Procedures for Commercial Drivers
Read more
Regulations4 min
Whistleblower Protections and Coercion Rules for CDL Drivers
Read more
Wellness5 min
CDL Fatigue Management and Wellness for Drivers
Read more
Driving Skills4 min
External Communications: CB Radios, Dispatch, and Customer Service
Read more