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Traffic Study <br />Lexington Avenue Reconstruction <br /> <br /> <br />Alliant No. 118-0186.0 34 <br />April 18, 2019 <br />Key conclusions of the traffic operations analysis include the following: <br />x Alternative 0: Updated signal timing and coordination reduced overall delay and queuing <br />at all intersections, while the Target South signal, with the reconfigured Lexington Station <br />driveway tying into the signal from the west, performed at overall LOS A. <br />x Alternative 1: Additional right-turn lanes at Red Fox Road, Target South, and <br />Grey Fox Road slightly improved delay with the added benefit of safer operations <br />(potential rear-end crash mitigation). <br />x Alternative 2: Dual SB left-turn lanes at Red Fox Road improved overall delay by roughly <br />six seconds per vehicle, as more green time could be provided for other movements. In <br />addition, southbound left-turn 95th percentile queuing is expected to be significantly <br />improved compared to Alternative 0, especially during the p.m. peak hour (No Build – 480 <br />feet, Alternative 0 – 425 feet, Alternative 2 – 247 feet) allowing vehicles to stack within <br />the provided turn lane bays. <br />x Alternative 3: Modification of the WB approach at CR E improved overall delay during <br />the p.m. peak hour, eliminated split phasing, and allowed for off-peak FYA operations. <br />x Alternative 4: Reconfiguring both the Enterprise/Big O Tires/Arby’s and Shannon Square <br />driveways to RIRO operation eliminated left-turn conflicts and improved side-street delay <br />without hurting the overall performance of the adjacent signalized intersections. <br />x Alternative 5: Removing access to the Enterprise/Big O Tires/Arby’s and Shannon Square <br />driveways provided minimal improvements to side-street delay over Alternative 4. <br />However, access removal allowed for better signal coordination and progression <br />throughout the corridor. <br />4.4 Preliminary Alternatives Comparison Matrix <br />A preliminary alternatives comparison matrix summarizing the key decision factors with respect <br />to project goals is provided in Table 10. The key decision factors include: <br />x Pros and Cons – Qualitative assessment of key advantages and disadvantages of the <br />preliminary intersection alternatives <br />x Operations Evaluation – Documentation of anticipated future traffic operations <br />x Design Considerations – Qualitative assessment of design issues, considerations, property <br />and right of way impacts <br />