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5 CONCLUSIONS The focus of this research was to identify the appropriate data elements to collect in order to evaluate the field performance of roadside hardware. Upon identifying those data elements, this research maximized the use of routinely collected data and minimized the amount of additional data collection, thus minimizing the time spent on-site by transportation agency personnel. The âGuidelines for the Collection, Extraction, and Documentation of Dataâ resulting from this research simplified and standardized the data survey and data extraction and documentation steps. These procedures also include a process for the interconnection of routinely collected data elements contained in multiple databases (i.e., schema mapping) with any additional data collected through field visits. These data collection procedures will promote using ISPEs, collaboration among transportation agencies, and sharing of ISPE data. The âGuidelines for the Collection, Extraction, and Documentation of Dataâ is included in Appendix A. 12
