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45 Appendix A Survey Questionnaire The survey questionnaire was prepared for this synthesis and ground Information, where the respondents' contact infor- reviewed initially by the panel members. Invitations to take mation was collected; (2) FWD Equipment Types; (3) FWD the survey were sent to falling weight deflectometer (FWD) Equipment Maintenance; (4) FWD Equipment Calibra- administrators in each of the 50 state highway agencies tion; (5) General FWD Testing Procedures; (6) FWD Field (SHAs) in the United States. Continuous communication Testing--Flexible Pavements; (7) FWD Field Testing-- with SHA representatives resulted in 45 of those 50 invitees Rigid Pavements; (8) FWD Computers; (9) Data Analysis; responding, for a response rate of 90%. One response was (10) Data Management and Storage; (11) Personnel Training; submitted by mail. All other responses were submitted by and (12) FWD Program Administration, which was split into means of an online form. two sections for the benefit of online responses. The survey contained a total of 88 separate questions. The A summary of the individual states that replied and their questions are grouped into 12 broad categories: (1) Back- responses is given in Appendix B.

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