CDLTest360 Blog

Articles — page 2

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EndorsementsOct 19, 2026·16 min read

Air Brake Certification for CDL: What Drivers Need to Know

Air brake certification on a CDL means removing the L restriction. Learn what the knowledge test covers, common exam mistakes, and how to study smart.

State GuidesOct 18, 2026·18 min read

CDL permit test by state: key differences and prep tips

The CDL permit test varies by state in fees, question counts, and retake rules. Know what your state requires and prep smarter with CDLTest360's state manuals.

CDL Study TipsOct 17, 2026·18 min read

The FMCSA Rules Study Guide Every CDL Student Needs

Master FMCSA rules for your CDL knowledge exam. This study guide covers HOS, weight limits, and inspection requirements. Start practicing smarter today.

EndorsementsOct 16, 2026·16 min read

How to Remove the Air Brake L Restriction from Your CDL

Restriction L on your CDL means no air-brake CMVs. Learn the exact tests, docs, and steps to remove it. Start prepping free at CDLTest360.

Trucking CareersOct 15, 2026·14 min read

What a Paid CDL Course Includes (And If It's Worth It)

A paid CDL course goes far beyond free practice tests. See exactly what you get, what justifies the cost, and whether it fits your situation.

Pre-Trip & SkillsOct 14, 2026·13 min read

CDL Pre-Trip Checklist: A Complete Zone-by-Zone Guide

Use this CDL pre-trip checklist to inspect every vehicle zone, document defects on your DVIR, and stay road-ready. Free printable breakdown inside.

EndorsementsOct 13, 2026·13 min read

CDL Air Brake Endorsement: Steps, Tests, and Real Costs

Learn what a CDL air brake endorsement means, how the L and Z restrictions work, what the knowledge test covers, and how to remove the restriction. Start prepping now.

CDL Study TipsOct 12, 2026·15 min read

Retaking the CDL Exam After a Fail: Your Step-by-Step Plan

Retaking the CDL exam doesn't have to feel overwhelming. Learn wait periods, state rules, retest fees, and a smarter study plan to pass your next attempt.