About the research
An automated collision diagram program quickly and accurately generates a graphic of intersection accident history. Limited human resources can concentrate on the safety analysis and not on manually generating collision diagrams resulting in a more efficient safety analysis program. The Iowa DOT was interested in software packages that were currently available, used by other DOTs, and how packages compared to the requirements. Fourteen packages were initially identified by CTRE. After the first evaluation step, nine packages were considered for evaluation. A decision matrix was developed that provided a “go/no go” to the individual programs. From this, four programs were obtained by CTRE for further analysis, and an investigation of each was conducted. From this analysis, a final selection was made. Comparing to the requirements, Intersection Magic, distributed by Pd’ Programming, was the program that the Iowa DOT selected for their collision diagram package.