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4 Analyses_ <br />Ma MEd MIZI MIZI MEd <br />a. Intersection Vehicular Analysis <br />The scenarios analyzed in this study for both the a.m. and p.m. peak hours were <br />the existing, 2040 No -Build, and 2040 Build scenarios. Capacity analyses are <br />performed for the study intersections to determine if they need improvements <br />such as turn lanes or an upgrade in traffic control. It should be noted that for the <br />No -Build and Build scenarios it is assumed Puma Street will be realigned on the <br />north end to line up with Okapai Street as shown in the site plan in the Appendix. <br />The existing and forecasted turning movement volumes along with the existing <br />intersection configurations and traffic control were used to develop the average <br />delay per intersection in each study scenario. The delay calculations were done <br />in accordance with the Highway Capacity Manual 6th Edition using the Vistro <br />software package. The full calculations for each study scenario, including Level <br />of Service (LOS) grades and queue lengths, are included in the Appendix. Also, <br />included in the Appendix is a guide explaining the Level of Service grade <br />concept. <br />Chart 1 (a.m. peak hour) and Chart 2 (p.m. peak hour) show the 95th percentile <br />queue lengths on the busiest stop sign controlled approach at intersections with <br />side street stop sign control. Because the vast majority of vehicles going through <br />the intersection are on the main roadway and have zero delay, which leads to <br />low overall average delays, queueing is a good metric to determine the <br />effectiveness of side -street stop controlled intersections. At side street stop sign <br />controlled approaches to busy roadways, the average delay for all the vehicles <br />on the approach often exceeds 60 seconds. This can be the case for a few <br />vehicles waiting at the stop sign where improvements would not be justified for <br />the low traffic volume. Based on our experience, in general, vehicle queuing of <br />five to ten vehicles is considered unreasonable and could warrant mitigation. <br />Traffic Impact Study 6 <br />Capstone Homes Residential Development <br />NSULTIING <br />