Get fully prepared to earn your CDL Doubles & Triples (T) Endorsement with the Doubles & Triples Masterclass Guide, a clear and comprehensive digital resource built to help drivers understand the unique challenges of pulling multiple trailers — and pass the exam with confidence.
 
This guide breaks down every critical concept you need to know: rollover risks, rearward amplification, safe driving habits, coupling/uncoupling procedures, air brake tests, and more. Written in simple, practical language with real-world trucking wisdom and faith-based encouragement, this Masterclass ensures you’re ready for both the exam and the real road.
 
Ideal for CDL students, trucking academies, refresher programs, and drivers moving into more advanced equipment.