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IBC VISION PLAN 2018 TRAFFIC STUDY UPDATE – ALTERNATIVES ANALYSIS Final 3.5 Alternative 2 Peak Hour Freeway Mainline Analysis Future freeway mainline volumes are based on forecast traffic using the ITAM model. Table 3.4 presents the freeway mainline segment analysis for Alternative 2 conditions and compares mainline segment performance to Buildout Cumulative With Update conditions. The Alternative 2 scenario does not include any freeway mainline capacity improvements, consequently, the capacities are consistent with the Buildout Cumulative With Update scenario. Appendix B presents detailed HCS worksheets for mainline analysis. The same segments that are forecast to be deficient in the Buildout With Update scenario are also deficient in Alternative 2. In the AM peak, 34 out of 60 freeway segments operate at a deficient LOS and in the PM peak 27 out of 60 operate at a deficient LOS. In total 40 segments are deficient in one or both peaks. The deficient segments are: AM Peak Hour: I-5 Northbound  Between Culver Drive and Jamboree Road  Between Jamboree Road and Tustin Ranch Road  Between Tustin Ranch Road and Red Hill Avenue  Between Red Hill Avenue and Newport Avenue  Between Newport Avenue and SR-55  North of SR-55 Southbound  Between Jamboree Road and Culver Drive  Between Tustin Ranch Road and Jamboree Road  Between Red Hill Avenue and Tustin Ranch Road  Between Newport Avenue and Red Hill Avenue  North of SR-55 I-405 Northbound Southbound  Between Culver Drive and Jamboree Road  Between Jamboree Road and MacArthur Boulevard  Between MacArthur Boulevard and SR-55  Between Jamboree Road and Culver Drive  Between SR-55 and MacArthur Boulevard  Between Bristol Street and SR-55  Between SR-73 and Bristol Street SR-55 SR-73 Northbound Southbound  Fair Drive to SR-73  McFadden Street/Sycamore Avenue to I-5  Between Dyer Road and MacArthur Boulevard  Between Edinger Avenue and Dyer Road  Between McFadden Street/Sycamore Avenue and Edinger Avenue  Between I-5 and McFadden Street/Sycamore Avenue  Between MacArthur Boulevard and University Drive  Between University Drive and Jamboree Road  Between Jamboree Road and Birch Street  Between Birch Street and Campus Drive  Between Campus Drive and SR-55 Northbound Southbound  Between University Drive and MacArthur Boulevard  Between Campus Drive and Birch Street  Between SR-55 and Campus Drive  Between SR-55 and Bear Street SR-261 Southbound Northbound  South of El Camino Real PM Peak Hour: I-5  Between Culver Drive to Jamboree Road  Between Jamboree Road to Tustin Rach Road  Between Tustin Ranch Road and Red Hill Avenue  Between Red Hill Avenue and Newport Avenue Iteris, Inc. | 74 City Council 21 – 29 4/16/2024