Beginning with entry-level explanations of the critical systems and advancing to the standard required of ASE L4 and L5 certification testing, this stand-alone book is a first-rate primer in the study of highway truck and trailer brake, suspension, and steering systems. Modular in format, the book's chapters cover basic principles directed to specific, performance-based learning outcomes. Step-by-step photo sequences for many critical shop-based tasks and an emphasis on troubleshooting help learners make the connection between conceptual and hands-on learning.