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• Debra Bloom, P.F. City of Roseville • �«�y », Zoo� Page 3 Current traffic controls include signalization at all key intersections with the exception of Cleveland Avenue/County Road C2, which is side-street stop controlled. A.M. peak hour turning movement counts were collected at each of the key intersections by SRF Consulting Group in June 2007. P.M. peak hour turning movement counts were collected by SRF Consulting Group in October 2006 (as part of another study in the area). Existing geometrics, traffic controls and peak hour traffic volumes for the key intersections are shown in Figure 2. An operations analysis was conducted for the a.m. and p.m. peak hours at the key intersections to determine how traffic currently operates in the study area. All signalized intersections were analyzed using the Synchro/SimTraffic software. The unsignalized intersection was analyzed using the Highway Capacity Software. Capacity analysis results identify a Level of Service (LOS), which indicates how well an intersection is operating. The LOS results are based on average delay per vehicle. Intersections are given a ranking from LOS A through LOS F. LOS A indicates the best traffic operation and LOS F indicates an intersection where demand exceeds capacity. LOS A through D is generally considered acceptable by drivers. For side-street stop controlled intersections, special emphasis is given to providing an estimate for the level of service of the minor approach. The traffic operations at an unsignalized intersection with side-street stop control can be described in two ways. First, consideration is given to the overall intersection level of service. This takes into account the total number of vehicles entering the intersection and the capability of the intersection to support those volumes. Second, it is important to consider the delay on the minor approach. Since the mainline does not have to stop, the majority of delay is attributed to the side-street approaches. Results of the analysis shown in Table 1 indicate that all key intersections currently operate at an acceptable LOS D or better during the a.m. and p.m. peak hours, with existing traffic controls and geometric layout. Table 1 Existing Conditions Level of Service Results Level of Service Intersectiou A.M. Peak p,M. Peak Cleveland Avenue/Coun Road C C D Cleveland Avenue/I-35W Northbound Ram s B D Cleveland Avenue/Coun Road C2* A/C A/C Cleveland Avenue/Coun Road D B C * Indicates an intersection with a side-street stop. The overall LOS is followed by the worst approach LOS. It is worth noting that southbound left-turn queues at the Cleveland Avenue/County Road C intersection occasionally extend back to the adjacent intersection (Cleveland Avenue/I-3�W Northbound Ramps) during the p.m. peak hour.