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<br /> <br /> <br /> <br />Page 6 <br /> <br /> <br />Complete Streets Evaluation – Hesperian Blvd November 9, 2018 <br />DKS assumed that signals would be retimed as part of this project (including maximum recall <br />removal for some phases at the Thornally Drive intersection). This resulted in some <br />improvement in operations for the study intersections compared to existing conditions with the <br />current timing plans. Compared to the existing conditions with optimized timings, operations <br />deteriorate somewhat but remain at acceptable LOS. The Hesperian Boulevard/Thornally Drive <br />intersection should be carefully retimed upon project implementation. Due to high westbound <br />left-turn and southbound through movements, the intersection is susceptible to high delay. The <br />project is expected to increase delay, especially for left turn movements. <br />Appendix 2 contains a graphical representation of the expected queuing for the Existing Plus <br />Project conditions. In general the project is expected to result in increased queue lengths along <br />the corridor, blocking some driveways which would not likely be blocked under existing <br />conditions with optimized timings. This would likely increase delay for drivers entering the <br />corridor from these driveways. <br />Table 3: Existing Plus Project Delay (Seconds)/LOS <br />Study Intersection Intersection <br />Control AM Peak PM <br />Peak <br />1) Hesperian Boulevard & Fairmont Drive Signalized 36.9/D 38.7/D <br />2) Hesperian Boulevard & Bayfair Drive Signalized 10.2/B 18.3/B <br />3) Hesperian Boulevard & Thornally Drive Signalized 67.6/E 58.9/E <br />4) Hesperian Boulevard & Drew Street Signalized 14.1/B 5.3/A <br />5) Hesperian Boulevard & Springlake Drive Signalized 21.0/C 19.1/B <br />Note: Signal retiming assumed for plus project condition. Reduction in delay compared to <br />existing conditions is due to signal retiming. <br /> <br />Table 4 shows the Arterial LOS analysis results. As shown, the corridor is expected to operate <br />at acceptable LOS in both directions after project implementation for both peak periods. It should <br />be noted that the existing conditions cycle length was maintained to not disrupt coordination. <br /> <br />Table 4: Existing Plus Project Arterial LOS <br /> Study Segment Signal <br />Delay (s) <br />Arterial <br />Speed (mph) <br />Arterial <br />LOS <br />AM <br />NB: Springlake Drive to Fairmont Drive 54.4 18.1 D <br />SB: Fairmont Drive to Springlake Drive 48.7 18.9 D <br />PM <br />NB: Springlake Drive to Fairmont Drive 55.8 17.9 D <br />SB: Fairmont Drive to Springlake Drive 45.5 19.4 D <br /> <br /> <br />479