What Is a CDL? Commercial Driver's License Basics
A plain-language explanation of what a CDL is, which vehicles require one, and the federal rules that govern commercial licensing.
CDL Basics — Commercial Driver's License Guides
Federal CDL requirements, class comparisons, and compliance basics for drivers and small fleet operators.
CDL Class A vs. Class B vs. Class C — What's the Difference?
Side-by-side comparison of CDL Classes A, B, and C: vehicle types, weight thresholds, and what each class allows a driver to operate.
Commercial Learner's Permit (CLP) — Requirements and Checklist
What a CLP is, how to get one, holding period requirements, and what CLP holders can and cannot do before taking the CDL skills test.
CDL Restrictions — Codes, Meanings, and How to Remove Them
Overview of common CDL restriction codes (air brakes, manual transmission, etc.), what they limit, and the steps to have restrictions removed.
CDL Disqualifications — Major and Serious Violations Overview
Overview of CDL disqualifying offenses: major violations, serious violations, railroad-crossing violations, and out-of-service orders.
CDL Renewal Checklist — What to Do Before Your CDL Expires
Step-by-step checklist for CDL renewal: documentation, medical certificate, endorsement knowledge tests, and state-specific requirements.
Interstate vs. Intrastate CDL — Key Differences
Explains the difference between interstate and intrastate CDL operations, which federal rules apply in each case, and why it matters for compliance.
CDL Manuals and Official CDL Resources — Where to Find Them
Directory of official CDL study materials, federal regulation sources, and where to find your state's official CDL driver manual.
CDL Age Requirements — Federal and State Minimums
Federal minimum age for interstate CDL operations is 21. States may allow intrastate CDL at 18. This page explains the rules and what applies in each case.
CDL Skills Test — Pre-Trip, Controls, and Road Test
Overview of the three-part CDL skills test: pre-trip vehicle inspection, basic vehicle control, and road test — what to expect and how to prepare.
CDL Recordkeeping for Small Fleets — What You're Required to Keep
Summary of CDL-related recordkeeping obligations for small trucking fleets: driver files, medical certificates, MVR checks, and retention timelines.
CDL Physical Requirements — Overview of Medical Standards
Overview of the DOT physical requirements for CDL drivers: vision, hearing, blood pressure, and other medical standards set by FMCSA regulations.
CDL Medical Self-Certification — The Four Categories Explained
What CDL medical self-certification is, the four operating categories, what each requires, and how failing to file with the state causes a CDL downgrade.