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(RIWH) and QZRI. This analysis determines what crossing improvements are needed for a <br />community to establish a quiet zone. At a minimum, all new quiet zones must have railroad <br />signals with gates. Appendix D is a process flow chart outlining the steps needed to obtain a <br />quiet zone. <br />There are different ways that a community can institute a quiet zone based on the risk index <br />approach. <br />• Install supplemental safety measures at each crossing <br />• If the RIWH is less than the NSRT <br />• If the QZRI is less than the RIWH <br />Table 1- Risk Analysis Summary <br />Type of Improvement <br />RIWH <br />QZRI <br />QZRI with SSM <br />Comment <br />National (NSRT) <br />14,347 <br />Existing <br />Woodlyn Avenue <br />6,942 <br />4,182 <br />836 <br />Raised median <br />South Owasso Blvd <br />14,438 <br />8,698 <br />1,739 <br />Raised median <br />Little Canada Road <br />26,148 <br />15,752 <br />3,150 <br />Raised median <br />Demont Avenue <br />17211 <br />10,368 <br />829 <br />2,307 <br />4 Quad gates <br />Raised median <br />Co Rd B2 <br />19,220 <br />11,537 <br />Co Rd B <br />17,959 <br />10,819 <br />2,163 <br />Raised median <br />Total <br />101,850 <br />61,356 <br />11,022 <br />Average <br />16,975 <br />10,226 <br />1,837 <br />7.0 Implementation of a Quiet Zone <br />Phasing of quiet zones is a process where a community can group the crossings based on <br />spacing, similar land use characteristics, safety and funding considerations. Phasing can get <br />complicated but many communities have successfully implemented multiple quiet zones. <br />The City should consider the following series of questions to decide how to implement a quiet <br />zone: <br />1. Should the quiet zone be night time only? <br />The rules allow two different types of quiet zones; a 24 hour /day or a nighttime. The <br />rules are the same but some communities have shown a reluctance to suspend the train <br />horns during the heavy roadway or pedestrian traffic periods of the day. <br />2. Should each crossing have SSMs installed? <br />Supplemental Safety Measures are very effective but the way the rules are written, <br />communities can average the risk among all the crossings so some may not have any <br />improvements at all and still meet the requirements. The City needs to weigh the risk of <br />no horns and no improvements at some of the crossings. Could partial SSMs be <br />installed? <br />If not all the crossings have SSMs at the implementation stage, these improvements <br />could be incorporated into future roadway or redevelopment projects, <br />LITTC 126672 <br />Page 10 <br />15 <br />Railroad Quiet Zone Report <br />City of Little Canada <br />