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Traffic Study Lexington Avenue Reconstruction Alliant No. 118-0186.0 40 April 18, 2019 Lexington Avenue & Red Fox Road Proposed improvements: x Add a dedicated EB right-turn lane x Add a dedicated SB right-turn lane x Add dual SB left-turn lanes x Modify signal timing to provide WB right-turn overlap with SB left-turn movement x Extend NB right-turn lane at I-694 EB Ramp Intersection to the Exxon gas station driveway Key benefits include: x Provides significant operational benefit during peak and non-peak periods o Expected to operate at overall LOS C or better under forecast year 2040 conditions o Southbound 95th percentile queuing is expected to be significantly improved compared to Alternative 0, especially during the p.m. peak hour (No Build – 480 feet, Alternative 0 – 425 feet, Preferred Alternative – 272 feet) x Provides flexibility for protective/permissive, protected only, or permissive only operation as determined through a FYA assessment analysis x Protective only phasing for the dual SB left-turn lanes during peak periods is likely to reduce crashes previously associated with poor gap selection under protective/permissive “green ball” operation Key design considerations include: x Reconstruction of the southbound approach is required x Provide four-section left-turn heads with FYA indications on all approaches o Operate the NB/SB left-turn movements protected only all day except for overnight periods or as deemed appropriate through a FYA assessment analysis Future considerations include: x Monitor operational and safety performance along EB Red Fox Road o If performance is determined to be inadequate, consider extending the EB right-turn lane trap approximately 265 feet east to the second Target driveway to minimize potential merging conflicts.