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.-.. Debra Bloom, P.E. City of Roseville Access Management � December 3, 2007 Page 2 There are multiple contributing factors that indicate closing this access is good engineering practice and in the best interest of the motoring public (both on site and the adjacent roadway network). First, typical access management practices prohibit this close access spacing (located approximately 300 feet from Snelling Avenue). Ramsey County guidelines require a minimum of 660 feet for the type of access and roadway function of County Road B. It is understood that this is an existing site access that does not meet County spacing guidelines. It is in the best interest of the City of Roseville to periodically evaluate their access management practices and take advantage of the opportunity to modify access in accordance with current guidelines. Furthermore, it should be noted that as the number of access points increase along a roadway, there is an impact on the safety of the roadway. Increased access points reduce the mobility of the roadway and its ability to efficiently move traffic. In addition, this particular access encourages u-turn movements along County Road B at the Har Mar Northeast Access intersection. While, the County Road B/Har Mar Northeast Access is a signalized intersection with dedicated left-turn storage for vehicles making a left-turn from County Road B(or a u-turn along County Road B), u-turns at this location are not the most desirable movement. Crash Analysis Wenk Associates presented a crash data summary stating that one u-turn crash was reported at the County Road B/Har Mar Northeast Access intersection in the last five years. This is correct with respect to the specific u-turn maneuver. However, SRF completed a more detailed crash analysis for the study intersection with crash data for the last four years at this intersection (four years rather than five due to potential poor quality of year 2003 data). Based on the crash data, the average crash rate for this intersection is 0.68 crashes per million entering vehicles. The Twin Cities metro area average crash rate for similar type intersections is 0.70 crashes per million entering vehicles. Therefore, the study intersection crash rate is comparable to similar type intersections. U-turn Occurrence Wenk Associates collected count data at the County Road B/Har Mar Northeast Access intersection to determine how many u-turns occur during the restricted weekday time periods. This data indicates that of the 82 u-turns that occur during these time periods, 37 of them are from the Har Mar Mall RIRO access (45 percent). It should be noted that vehicles using this RIRO access to make a u-turn at the signalized intersection represents approximately 10 percent of the total volume during this same period exiting the RIRO access. These vehicles have adequate access internal to the Har Mar Mall area to the signalized intersection of County Road B/Har Mar Northeast Access to travel westbound on County Road B. Therefore, restricting this access to a right-in only does not create an undue hardship on the development as a whole.