Agenda - Planning Commission - 08/02/2018

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potential issues due to general background growth and other specific development traffic with or without the proposed North Dayton site: • Continue to work on long-term solutions with other agencies to accommodate future congestion on the TH 169 and CSAH 81 corridors. • Construct a multi -lane roundabout at the Dayton River Road/South Diamond Lake Road intersection, with two-lane Dayton River Road approaches. A traffic signal with dedicated turn lanes could also provide the necessary capacity at the intersection, although a roundabout is preferred due to improved safety and better off-peak operations. • Construct single -lane roundabouts at the intersections of 129th Avenue/Pineview Lane, Dayton River Road/Brockton Lane, and South Diamond Lake Road/Pineview Lane. Traffic signals with dedicated turn lanes could also provide the necessary capacity at the intersection, although roundabouts are preferred due to improved safety and better off-peak operations. • Continue to update signal timing at all signalized intersections at least every three to five years. With the North Dayton proposed development traffic contributing to the study area volumes, the following additional 2040 mitigation is recommended: • Provide dedicated right turn lanes for the Dayton River Road/Pineview Lane intersection single -lane roundabout using the reserved right-of-way if a roundabout was constructed as part of the 2025 mitigation. • Construct a single -lane roundabout at the N Diamond Lake Road/Zanzibar Lane intersection. A traffic signal with dedicated turn lanes could also provide the necessary capacity at the intersection, although a roundabout is preferred due to improved safety and better off-peak operations. • Construct multi -lane roundabout at the Dayton River Road/N Diamond Lake Road intersection, with two-lane Dayton River Road approaches. A traffic signal with dedicated turn lanes could also provide the necessary capacity at the intersection, although a roundabout is preferred due to improved safety and better off-peak operations. • Provide dedicated right turn lanes for the N Diamond Lake Road/Brockton Lane intersection single -lane roundabout using the reserved right-of-way if a roundabout was constructed as part of the 2025 mitigation. As before, for intersections where a roundabout or a traffic signal is proposed, a detail Intersection Control Evaluation will be necessary. This document will evaluate the two control options and document the decision for which option is ultimately constructed. For the purposed of this document, roundabouts are the preferred option. In addition to these roadway improvements, the following items are also recommended based upon the traffic analysis for the proposed development: • Reserve space, if necessary, for the future trail network in this area as planned by the City of Dayton. Traffic Impact Study 29 North Dayton Development =CONSULTING