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Future Year Concept Traffic Analysis <br /> Future Year Safety Analysis <br /> To quantify the reduction in crashes for each concept, the CMF Clearinghouse website was used.The <br /> Clearinghouse website provides crash modification factors (CMFs) for various countermeasures <br /> implemented on a segment or at an intersection. Using the Clearinghouse, CMFs were selected based <br /> on the relevance of the countermeasure to the concept analyzed. The CMFs used for the various <br /> improvement concepts are shown in Table 10 through Table 13. <br /> Table 10: Roundabout Crash Modification Factors <br /> CMF Crash Type Crash Severity Area Type <br /> 0.5 7-0.62 All All <br /> 0.17-0.21 All K,A,B,C <br /> Table 11: Bypass to Turn Lane Crash Modification Factors <br /> CMF Crash Type Crash Severity Area Type <br /> 0.88* All All <br /> *Value was calculated by combining two CMFs since there was no CMF for bypass to dedicated turn lane <br /> Table 12:Turn Lane on Minor Approach Crash Modification Factors <br /> CMF Crash Type Crash Severity Area Type <br /> 0.75 All All <br /> Table 13: Increased Horizontal Curve Radius Crash Modification Factors <br /> CMF Crash Type Crash Severity Area Type <br /> 0.77 All Rural <br /> The CMFs for increased horizontal curve radius show in Table 13 were calculated using the following <br /> equation: <br /> 24 <br />