Free CDL study guides, DMV updates, endorsement walkthroughs, pre-trip inspection guides, and truck driving resources — updated regularly and grounded in public FMCSA regulations.
Handpicked reads to jump-start your CDL prep.
Learn what's on the ELDT theory practice test, how the assessment is scored, and which topics to prioritize. Start practicing with CDLTest360, no account needed.
Master CDL pre-trip inspection practice with exact FMCSA wording, common fail points, and a printable Class A/B checklist. Start drilling with CDLTest360's PTI phrase trainer.
Get the FMCSA CDL manual PDF, find your state's handbook, check 2026 updates, and follow a study plan that actually prepares you for the knowledge exam.
CDL test prep doesn't have to be overwhelming. Get a proven study plan with timeline options, active practice strategies, and free access via CDLTest360.
Jump straight into a practice test for any CDL topic or endorsement.
Editorial categories across the CDL Knowledge Center.
Strategies and tips to help you pass every CDL knowledge and skills test on the first attempt.
Deep dives on Air Brakes, HazMat, Tanker, Doubles & Triples, Passenger, and School Bus.
Pre-trip inspection walkthroughs and skills-test preparation.
State-by-state CDL testing, fees, and DMV/DPS procedures.
Job outlook, pay, lifestyle, and career paths for new and experienced CDL drivers.
Learn what's on the ELDT theory practice test, how the assessment is scored, and which topics to prioritize. Start practicing with CDLTest360, no account needed.
Master CDL pre-trip inspection practice with exact FMCSA wording, common fail points, and a printable Class A/B checklist. Start drilling with CDLTest360's PTI phrase trainer.
Get the FMCSA CDL manual PDF, find your state's handbook, check 2026 updates, and follow a study plan that actually prepares you for the knowledge exam.
CDL test prep doesn't have to be overwhelming. Get a proven study plan with timeline options, active practice strategies, and free access via CDLTest360.
Your complete CDL study guide covering every major test section, a 30-day plan, and endorsement checklist. Take free practice tests at CDLTest360 today.
Class C CDL practice test guide: who needs it, what's on the exam, passing scores, state rules, and a 7-day study plan to pass your written test. Start prepping now.
Class B CDL practice test breakdown for 2026: exam structure, key topics, passing scores, and a 7-step study plan to help you pass the written test first try.
Class A CDL practice test guide covering general knowledge, combination vehicles, and air brakes, with sample questions and a 7-day study plan. Start free.
The CDLTest360 Knowledge Center is a free, growing library of study guides for drivers preparing for a commercial driver's license. Every article is grounded in the public Federal Motor Carrier Safety Administration (FMCSA) regulations and the AAMVA model CDL manual that every state DMV or DPS uses as its source. We publish walkthroughs, test strategies, endorsement deep dives, and pre-trip inspection breakdowns to help new and returning drivers pass on the first attempt.
Whether you're a first-time applicant studying for the General Knowledge exam, an experienced driver adding an Air Brakes, HazMat, or Combination Vehicles endorsement, or a fleet trainee working through ELDT theory hours, you'll find plain-English explanations, checklists, and worked examples here. Our Pre-Trip Inspection guides break down the seven-step method examiners use so nothing gets missed on skills-test day.
Beyond the knowledge exam, we cover the working reality of trucking: pay ranges, home-time expectations, day-in-the-life accounts, choosing between company driving and owner-operator, and how to pick a CDL school. Our state guides walk you through the specific DMV or DPS procedures, fees, medical card requirements, and skills-test scoring for the states we cover — starting with Florida, Texas, and California, with more added regularly.
Articles cite the FMCSA sections and state manuals they draw from so you can verify anything you read here against a primary source. Nothing on this site replaces your state's official CDL manual, but it's designed to make that manual dramatically easier to study from.
New to the site? Start with our free CDL practice tests to see where you stand, then use the articles here to shore up the topics that gave you trouble. Bookmark the page — we publish new material every week.