Practice question What is rearward amplification? Movement becoming greater toward the rear trailerA passenger endorsement onlyA cargo paperwork shortcutAn action not supported by DPS Section 7 Answer: A — Movement becoming greater toward the rear trailer The correct answer is shown above. Try the full quiz for additional practice. Practice more: TX CDL Doubles and Triples Practice Questions - Texas CDL Doubles and Triples Endorsement Test Exam →