The X Endorsement Masterclass

Unlock the Highest-Paying Commercial Freight in Trucking with a 35-Year Master CDL Instructor!

The X Endorsement combines both the Tank Vehicle (N) and Hazardous Materials (H) endorsements into a single elite commercial qualification under 49 CFR Part 383. Holding an X endorsement separates routine freight haulers from top-tier professional drivers, unlocking specialized tanker loads, cryogenic transport, chemical distribution, and petroleum linehaul.

Written by master instructor Russell Dickson-commercial driver since 1989 and founder of Excell CDL Academy (Circle of Excellence Award Recipient)-The X Endorsement Masterclass translates dense federal regulations, Title 49 CFR HazMat tables, and fluid dynamics into clear, memorable operational knowledge.

What You Will Master Inside This Illustrated Guide:

• Liquid Surge & Tanker Physics: Understand how forward, backward, and side-to-side liquid surge transforms vehicle handling. Master the differences between baffled, unbaffled (smooth bore), and bulkheads.


• Outage & Weight Distribution: Why liquid expands with heat, how to calculate outage, and how dense liquids reach legal axle weight limits (80,000 lbs GVW) with partially filled tanks.


• The 9 Hazardous Materials Classes: Instant visual identification of explosives, gases, flammable liquids, oxidizers, poisons, radioactive cargo, and corrosives.


• Shipping Papers & The Basic Description: The mandatory ISHP sequence (Identification Number, Proper Shipping Name, Hazard Class, Packing Group) and federal accessibility requirements in the cab.


• Placarding & Segregation Rules: The 1,000-lb threshold, dangerous placards, table 1 vs. table 2 commodities, and navigating the HazMat Segregation Matrix.


• Emergency Response & Safe Driving: Emergency Response Guidebook (ERG) protocols, roadside tire checks, safe parking buffers (300 ft rules), and railroad grade crossing stop mandates.


• 40-Question Practice Examination: Realistic exam simulation (20 Tanker + 20 HazMat questions) complete with an in-depth Examiner's Answer Key explaining the exact "why" behind every answer.


• Appendix Numbers Cheat Sheet: The critical regulatory metrics, testing intervals, and emergency numbers you must know cold.


• Complete Trucker's Glossary: Over 230 A-to-Z commercial vehicle industry terms and acronyms.

Official FMCSA Training Provider Information:

Excell CDL Academy TPR Provider ID: 96c757c2-81d1-4ecd-93f0-058b114087ff

Official Online Certification Portal: excellcdl.com

Take command of your career and start hauling high-dollar freight. Grab your copy of The X Endorsement Masterclass today!