CCP 03-17-2003 - Laserfiche WebLink

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. . . Mr, Todd Mohagen Mr. Tom Jacobson -5- March 7, 2003 TRAFFIC ANALYSES Level of Service Capacity analyses were performed using the methodology presented in the 1997 Highway , Capacity Manual (HCM) for the existing and proposed conditions for the County Road E/Pine Tree Drive intersection and for the proposed exit-only drive onto County Road E. Capacity Analysis results are presented in terms oflevel of service (LOS), which ranges from A to F. The LOS is based on the extent of vehicle delay at the intersection. Level of service A represents the best intersection operation, with very little delay for each vehicle using the intersection. Level of service F represents the worst intersection operation, with excessive delay, Level of service D or better operation is considered acceptable in the Twin Cities area. The capacity analyses were conducted for the p.m. peak hour. The level of service for the County Road E/Pine Tree Drive intersection for the existing conditions is a LOS B and does not change with the proposed site development including the exit-only drive on County Road E. The LOS for the proposed exit-only drive is a level of service D, which is acceptable in the Twin Cities area. Thus, an exit-only driveway can be provided to County Road E without causing any traffic delay difficulties. Oueue Lenl!:th Analysis Approximately 170 feet is available for stacking vehicles between Pine Tree Drive and the proposed driveway, This separation is farther than the 150 feet distance between Pine Tree Drive and the Wells-Fargo drive-through exit. During the survey on Tuesday, February 18,2003, we noted that a maximum of eight vehicles were stopped in one eastbound lane west of Pine Tree Drive. This translates to a queue of 160 feet. The average longest queue length for each traffic signal cycle was 100 feet. The traffic volume increase due to the bank is very limited. Therefore, upon completion of the bank, the worst case situation is the queue length may increase by one vehicle, Thus, the maximum post-development queue length would be 180 feet with an average queue length of a 120 feet. The 170 feet of queue space available with the proposed driveway is greater than the average queue length and is almost the same length as the maximum queue length. Thus, we have determined that only on rare occasions will the queue of the eastbound vehicles on County Road E extend west to the proposed driveway. Given the rare nature of this situation we believe that no serious interference will occur between the driveway and the queue of eastbound traffic on County Road E. Safety Analysis Accident information for the years 2000, 2001, and 2002 was collected on County Road E from the Highway 51 East Ramp to Lexington Avenue, including the accidents at the intersection of Pine Tree Drive but not the intersections at the Highway 51 East Ramp or Lexington Avenue, For the three year period, a total of 27 accidents were reported along