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Ms. Jane Rose October 12, 2015 Page 3 and eastbound traffic that occurred in 2013, with the cause of the crash being disregarding of the signal system by the eastbound vehicle. Thus, there does not appear to be a safety concern at this intersection with the presence of signalized operation. One of the recommendations from the MnDOT Rafflc Signal Timing and Coordination Manual is to utilize Vrotected left turn phasing only either for situations where the posted speed limit exceeds 45 mph and the peak hour left turning volume is greater than 240 vehicles per hour, or for when the cross product between the northbound left turn traffic volume and the southbound through traffic volume exceeds 80,000. With regards to the most recent available traffic counts: a. Between the hours of 7:00 am -8:00 am and also 4:00 pm -5:00 pm of the most recent traffic counts, westbound left turn volumes exceeded 150 vehicles per hour (peaking at 208 left turns between 7-8 am). No other intersection approach exceeded 100 left turning vehicles per hour. b. In the 2007 traffic counts, left turns for southbound traffic between 10:00 am -11:00 am approached 300 vehicles per hour. No other left turn count in these counts exceeded 110 vehicles per hour. c. For the AM peak hour in 2015, the cross product between westbound left turn traffic volumes and eastbound through traffic volumes exceeded 80,000 (96,304). For all other movements with both the 2007 and 2015 counts, no hour had a cross product exceeding 80,000. Following up against the flashing yellow arrow criteria from the MnDOT Traffic Signal Timing and Coordination Manual: Left turn lanes line up well for each intersection approach with sufficient turning room in the intersection so that left turn paths were not conflicting. This was observed specifically for the southbound dual left turn and northbound single left turn movement where protected left turn phasing was run together for these movements with no conflicts between either direction's left turn movements. Eastbound and westbound left turn movements are offset far enough such that no conflicts in left turn paths are occurring. 2. Only the southbound approach has two left turn lanes. For this approach, the MnDOT Manual suggests that protected operation be utilized during the higher volume periods of the day with Engineering judgment being used to determine if flashing yellow operation could be used for all other times of the day. 3. There are less than 3 opposing lanes of traffic facing each intersection approach. 4. The intersection does not have a high crash rate and there is no significant history of right angle crashes involving left turning traffic. In summary, as there is no significant crash history for left turning traffic and traffic volumes are likely lower for the entire intersection (outside of the peak traffic periods), the County should be able to 125