What must be kept for audit purposes after a windshield is cut for sticker removal?

The requirement to keep the cut-out portion of the windshield that contains the inspection sticker is crucial for audit purposes in Pennsylvania. This practice helps maintain a record of compliance with inspection regulations, allowing officials to verify that the sticker was properly removed and that the vehicle underwent the appropriate inspection. Retaining this specific part of the windshield serves as physical evidence of the sticker's removal process and ensures accountability, which is essential for regulatory oversight.

Keeping only the entire windshield or other options like the inspection certificate or original sticker does not directly relate to the verification of the sticker's removal process, making those alternatives less relevant for audit purposes. Retaining the cut-out portion specifically ties back to ensuring that each inspection is conducted following the established guidelines, thereby upholding the integrity of the inspection system.