CCP 02-26-2001 - Laserfiche WebLink

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f I V3'b . 4.0 Traffic Operation Analysis of Existing Conditions The purpose of this analysis is to document how the existing roadway geometry, traffic control, and signal timing parameters accommodate the current traffic volumes. This analysis will also provide a benchmark for comparing when development volumes are added. The analysis uses the current Year 2001 signal operation parameters for County Road E at Lexington Ave as defined by Ramsey County. This intersection operates actuated-coordinated with other signal systems located to the north on Lexington Ave. 4.1 Existing AM Peak Hour Conditions The existing a.m. peak hour turning movement LOS and intersection LOS for each of the key intersections are shown in Table 4.1-1. The results show that all turning movements at County Road E / Lexington Ave intersection operate at a sufficient LOS and the overall intersection operates at a LOS C. The existing a.m. peak hour queuing analysis is presented in Table 4.1-2. The results show that during the a.m. peak hour the intersection of County Road E and Lexington Ave does not display any queuing problems. 4.2 Existing PM Peak Hour Conditions . The existing p.m. peak hour turning movement LOS and intersection LOS for each of the key intersections are shown in Table 4.2-1. The results show that the west approach left turn movement at County Road E and Lexington Ave operates poorly, LOS E. Although, the overall intersection operates at a LOS C, the suspect left turn movement is considered to be an operational deficiency. The intersection of County Road E and Arden Plaza Entrance was found to operate at a LOS A. It should be noted that although the overall intersection LOS at County Road E / Arden Plaza Entrance intersection is at LOS A, the north and southbound movements operate at a LOS F. This is not uncommon for through-stop conditions, where a small number of vehicles on the minor street approach experience a high delay while most of the vehicles entering the intersection experience little or no delay on the main street. The existing p.m. peak hour queuing analysis is presented in Table 4.2-2. The results show the west approach left turn at County Road E / Lexington Ave intersection poses a serious operational deficiency. The 95th percentile queue extends approximately 100 feet beyond the available storage distance. In addition to the results shown through the queuing analysis, field observations during the p.m. peak hour found the left turn lane queuing beyond the Arden Plaza Entrance intersection with County Road E. . Following the guidelines as previously discussed, the County Road E / Lexington Ave west approach left turn presents problems with safety, mobility and access at this intersection and at the immediate upstream intersection. This is an operational deficiency that needs improvement and will be discussed in the next section. Walgreen's Traffic Impact Study Draft Report Existing Operation February 07, 2001 4-1