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Quiet Zone Evaluation 25 New Brighton, Minnesota Quiet Zone Area 4 Quiet Zone Area 4 covers the two crossings of 10th Street and 8th Street. With existing cantilevered flashers in place, the addition of a gate system would be needed at the 10th Street crossing. The existing gates and flashers at 8th Street are sufficient. Channelization devices were initially examined as the potential SSM for a Quiet Zone. 10th Street has two adjacent driveways within 100 feet of the rail crossing. These driveways would be reduced to right-in right-out accesses with addition of the delineators. However, each of impacted driveways have additional accesses outside of the 100-foot delineator zone which would remain unchanged and allow full movements onto 10th Street. 8th Street is slightly more constrained with one parking lot 70 feet to the east of the crossing and one alley access 25 feet west of the crossing. With this access spacing the minimum acceptable 60-foot long delineators could be added to the east, without impacting the parking lot access, with full length 100-foot delineators added to the west. The western delineators would restrict the alley access, impacting the routes to the three garages. Due to the low ADT along 8th Street, less than 700 vehicles, and the close spacing of additional intersections allowing turn around movements, minimal impact is expected due to the delineator placement. However, if it is not preferred to force a decision between access and less noise, the crossings appear to be good candidates for wayside horns. As described earlier, the wayside horn is a substitute for the train horn. The noise is not eliminated but is directed down the streets and should result in less overall noise in the area. Both at-grade crossings in this area also have sidewalk crossings. As with the other pedestrian crossings, channelizing fencing should be provided to help increase awareness of the trains. Figures 9 and 10 show the potential improvement concepts for this Quiet Zone area. The Quiet Zone concept without wayside horns was input into the Quiet Zone calculator to determine the effectiveness in reducing the risk at the crossings. The Quiet Zone calculator is not necessary for the wayside horns, since the warning horn would not be eliminated but replaced with a wayside horn. The following table shows the results and comparison to the RIWH and NSRT. Table 4 – Quiet Zone Area 4 Potential Improvements Effectiveness Quiet Zone Area 3 QZRI RIWH NSRT Improvement Concept 1 1,585.45 3802.05 14,723.00 The following would be necessary for this Quiet Zone area without the use of wayside horns:  Channelization device to separate traffic on each approach.