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• One-way crossings (SSM) - 5 <br />• Three gate / median combination (ASM) — 2 <br />SSMs at thirty crossings automatically qualify for a quiet zone <br />ASMs at two crossings require analysis of risk level <br />3/12/2024 <br />Quiet Zone Process <br />For a quiet zone to be qualified, <br />it must be shown that the lack of M' <br />€ xz� <br />the train horn does not present a <br />significant risk with respect to <br />loss of life or serious personal 4 <br />injury, or that the significant risk <br />has been compensated for by <br />other means. <br />Preliminary Analysis of County Wide Quiet Zone: <br />Quiet Zone Risk Index < Risk Index With Horns <br />4 No additional crossing improvements >' <br />4 No construction needed at crossings <br />I-� No train horn signs required <br />