75B - PH - TUSTIN AND 4TH ST - Laserfiche WebLink

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8.0 PEAK HOUR INTERSECTION CAPACITY ANALYSIS 8.1 Existing Plus Project Analysis Table 8-1 summarizes the peak hour Level of Service results at the four (4) key study intersections for existing plus project traffic conditions. The first column (1) of ICU/LOS values in Table 8-1 presents a summary of existing AM and PM peak hour traffic conditions (which were also presented in Table 3-3). The second column (2) lists existing plus project traffic conditions. The third column (3) shows the increase in ICU value due to the added peak hour Project trips and indicates whether the traffic associated with the Project will have a significant impact based on the LOS standards and significant impact criteria defined in this report. The fourth column (4) presents the resultant level of service with the inclusion of recommended traffic improvements, where needed, to achieve an acceptable level of service. 8.1.1 Existing Plus Project Traffic Conditions Review of columns (2) and (3) of Table 8-1 indicate that traffic associated with the proposed Project will not significantly any of the four (4) key study intersections, when compared to the LOS standards and significant impact criteria specified in this report. Although the intersection of SR -55 SB Ramps at Fourth Street is forecast to operate at LOS E during the AM peak hour with the addition of Project traffic, the proposed Project is expected to add less than 0.010 to the ICU value. The remaining three (3) intersections are forecast to continue to operate at an acceptable LOS with the addition of project generated traffic. Appendix C presents the existing plus project ICU/LOS calculations for the four (4) key study intersections. 75B-104