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8.B. - Page 131 Ms. Lindy Chan Page 3 October 27, 2017 Study Intersection Existing Traffic Signal Optimization The existing conditions analysis shown above was completed using existing signal timing provided by Caltrans. Currently, the traffic signals along the corridor operate in coordination. Traffic signal coordination allows traffic signals at adjacent intersections to work together, resulting in vehicles being able to pass through multiple intersections with the fewest number of stops needed, and thereby improving traffic flow. Along EI Camino Real, traffic signal coordination improves flow and reduces the potential for queues to exceed available storage. For the purpose of this analysis, the study signalized intersections along the corridor were evaluated assuming optimized network timing and coordination, and the results of the analysis are presented in the Preferred Alternative Traffic Operation section. Offset Intersections The intersections of EI Camino Real/Cedar Street, EI Camino Real/Roosevelt Avenue, and EI Camino Real/Chestnut Street are closely spaced. The EI Camino Real/Roosevelt Avenue and EI Camino Real/Chestnut Street intersections are both signalized, while the EI Camino Real/Cedar Street intersection is stop controlled on the westbound Cedar Street approach. Currently, the traffic signals at the signalized intersections employ a coordinated timing system during the a.m. and p.m. peak hours. Generally, the vehicle platoons progress through the system in a fairly efficient manner given congested conditions on the corridor. To provide an additional cross-town connector and access to Main Street/Downtown area, Cedar Street could be realigned such that it becomes the fourth leg of the EI Camino Real/Roosevelt Avenue intersection. Additional data would be needed in order to determine if the close spacing of the Roosevelt Avenue and Chestnut Street signalized intersections result in excess delays for vehicles along EI Camino Real and along the side -streets. Additional data collection required would include: traffic, pedestrian, and bicycle volumes at the intersections of EI Camino Real/Chestnut Street and EI Camino Real/Cedar Street; traffic volumes at the existing BevMo driveway located on the east side of EI Camino Real approximately 45 feet south of the EI Camino Real/Roosevelt Avenue intersection; traffic volumes at the existing Aaron Brothers driveway located on the west side of EI Camino Real approximately 80 feet north of the EI Camino Real/Roosevelt Avenue intersection; and coordination with SamTrans to determine the need for or feasibility of relocation of the AM Peak PM Peak EB WB EB WB 1. EI Camino Real/Whipple Avenue 55.5 42.6 88.8 47.1 2. EI Camino Real/Brewster Avenue 37.7 37.1 36.8 41.6 3. EI Camino Real/James Avenue 41.3 37.4 86.8 42.9 4. EI Camino Real/Jefferson Avenue 40.7 39.3 41.1 47.9 5. EI Camino Real/Maple Street -- 30.5 -- 40.2 6. EI Camino Real/Roosevelt Avenue 54.0 -- 51.6 -- 7. EI Camino Real/Oak Avenue 56.0 -- 49.1 -- 8. EI Camino Real/Redwood Avenue -Main Street -- 12.7 -- 16.9 9. EI Camino Real/Hazel Avenue -Laurel Street 311.6 51.8 125.6 138.4 10. EI Camino Real/Oakwood Drive -Dumbarton Ave 26 31.8 40.7 43.5 Total Side -Street Delay 622.8 283.2 520.5 418.5 Notes: EB = Eastbound; WB = Westbound; Results are shown as Delay; Delay is measured in average seconds per vehicle Traffic Signal Optimization The existing conditions analysis shown above was completed using existing signal timing provided by Caltrans. Currently, the traffic signals along the corridor operate in coordination. Traffic signal coordination allows traffic signals at adjacent intersections to work together, resulting in vehicles being able to pass through multiple intersections with the fewest number of stops needed, and thereby improving traffic flow. Along EI Camino Real, traffic signal coordination improves flow and reduces the potential for queues to exceed available storage. For the purpose of this analysis, the study signalized intersections along the corridor were evaluated assuming optimized network timing and coordination, and the results of the analysis are presented in the Preferred Alternative Traffic Operation section. Offset Intersections The intersections of EI Camino Real/Cedar Street, EI Camino Real/Roosevelt Avenue, and EI Camino Real/Chestnut Street are closely spaced. The EI Camino Real/Roosevelt Avenue and EI Camino Real/Chestnut Street intersections are both signalized, while the EI Camino Real/Cedar Street intersection is stop controlled on the westbound Cedar Street approach. Currently, the traffic signals at the signalized intersections employ a coordinated timing system during the a.m. and p.m. peak hours. Generally, the vehicle platoons progress through the system in a fairly efficient manner given congested conditions on the corridor. To provide an additional cross-town connector and access to Main Street/Downtown area, Cedar Street could be realigned such that it becomes the fourth leg of the EI Camino Real/Roosevelt Avenue intersection. Additional data would be needed in order to determine if the close spacing of the Roosevelt Avenue and Chestnut Street signalized intersections result in excess delays for vehicles along EI Camino Real and along the side -streets. Additional data collection required would include: traffic, pedestrian, and bicycle volumes at the intersections of EI Camino Real/Chestnut Street and EI Camino Real/Cedar Street; traffic volumes at the existing BevMo driveway located on the east side of EI Camino Real approximately 45 feet south of the EI Camino Real/Roosevelt Avenue intersection; traffic volumes at the existing Aaron Brothers driveway located on the west side of EI Camino Real approximately 80 feet north of the EI Camino Real/Roosevelt Avenue intersection; and coordination with SamTrans to determine the need for or feasibility of relocation of the