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92 Appendices A through D are not printed within the report but are available for download from TRBâs website at www.trb.org by searching for NCHRP Synthesis 524. The appendices include the following: Appendix A: Survey Questionnaire Appendix B: Survey Respondent Information Appendix C: Compilation of Survey Responses Provided by Agency Respondents Appendix D: Links to Approved Aggregate Lists and Specifications Published by Agencies Appendices AâD
