TRB's Airport Cooperative Research Program (ACRP) Report 41: Guide to the Decision-Making Tool for Evaluating Passenger Self-Tagging provides the information and tools, included on and accompanying CD-ROM, necessary for an airport or airline to determine the appropriateness of pursuing passenger self-tagging should it be allowed in the United States in the future. The tools, in an Excel Spreadsheet format, allow for the input of airport-specific information, such as facility size and passenger flows, while also providing industry averages to assist those airports and airlines that haven't yet collected their individual information. The decision-making tools provide both qualitative and quantitative information that can then be used to assess if passenger self-tagging meets organizational needs or fits into their strategic plan. Appendix A to ACRP 41 was published online as ACRP Web-Only Document 10: Appendix A: Research Documentation for ACRP Report 41. The CD-ROM included as part of ACRP Report 41 is also available for download from TRB's website as an ISO image.