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Quiet Zone Evaluation 16 New Brighton, Minnesota tubular delineators attached, which would be less expensive than a full raised median. Some channelization devices are less than one foot in width and would fit within the roadway’s current design and width. Under this potential improvement plan, the trail and sidewalk remain outside the crossing area. If either is extended, appropriate measures could be considered at that time such as directional channelization. In addition, a driveway on the west side of the crossing may need to be reduced to right in/right out under this scenario. A potential option to mitigate that access reduction would be to connect the parking lot on that property to Stinson Boulevard, providing a secondary point of entry and access to the County Road H/Stinson Boulevard full-access intersection. With gates and flashers already installed at the Knollwood Drive crossing, only a channelization device may still be needed to improve the crossing safety. This device would reduce access for one driveway to right in/right out. With a low volume road and no through access to the south, this restriction may not be an issue for the homeowner. However, this improvement may not be needed due to low traffic volumes and the reduced risk when combined with other crossings. A diagnostic team review would be necessary to confirm whether or not this SSM is really needed. Although Silver Lake Road provides a narrow four-lane section, there are still some types of channelization devices that would provide the appropriate SSM without widening the road. With driveways located a sufficient distance from the crossing, the full 100-foot channelization device could be installed without impacts to access. The existing rail control is old and requires updating according to earlier discussions with the MNNR. Full gates, flashers, and bell systems should be installed during this upgrade Figures 4, 5, and 6 show the potential improvement concepts for each crossing in Quiet Zone Area 1. Two concepts were input into the Quiet Zone calculator to determine their effectiveness in reducing the risk at the three crossings. The first concept includes the channelization device at the Knollwood Drive crossing. The second concept assumes that no channelization device or other SSM is provided at that location. The following table shows the results and the comparison to the RIWH and NSRT.