Which document contains the guidelines that inspectors must follow during vehicle inspections?

The Pennsylvania State Inspection Manual is the essential document that outlines the specific guidelines that inspectors must adhere to when conducting vehicle inspections. This manual provides comprehensive instructions and standards regarding various components of the vehicle, ensuring that inspections are consistent and thorough across the state. It details the procedures for checking critical safety systems, emissions, and other relevant areas that ensure vehicles are operating safely and meet state regulations.

While other documents such as the Pennsylvania Vehicle Codes may contain legislative information related to vehicle operations and regulations, they do not provide the step-by-step procedures that inspectors need to follow during inspections. Similarly, the Vehicle Safety Standards Handbook and the National Inspection Regulations Document may present overarching standards and regulations but lack the localized, detailed inspection protocols found within the Pennsylvania State Inspection Manual. Thus, it is this manual that serves as the definitive guideline for inspection practices specific to Pennsylvania.