4.9. SR 01-03-2017 - Laserfiche WebLink

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the events will have attendees arriving and leaving at various times as discussed above. Most of the attendees will be expected to arrive from and leave toward the Twin Cities, to and from the south on TH 169. Approximately 65 to 70 percent of the spectators will be on this route. For example, for a 5,000 -person event is expected to generate roughly 1,667 vehicles, approximately 1,150 vehicles will be expected to/from the south on TH 169 and approximately 517 vehicles will be expected to/from the north on TH 169. As shown above, the day-to-day traffic operations will continue to be similar to existing operations. For event traffic, different amounts of traffic will require different accommodations. The first natural subdivision is when the overflow lot is expected to be needed. The parking on the north side is able to accommodate 1,800 parking spots for visitors. At the assumed 3.0 people per vehicle, that translates into 5,400 spectators. Based on the peak parking demands, as mentioned in the prior section, of 90 percent for a weekday event and 80 percent for a weekend, an estimate of 6,000 people determines the use of the overflow lot. Another division exists between when events below an estimated 6,000 visitors will require traffic control on TH 169. This estimate is based on the amount of traffic expected to turn in or out of the site during the peak hour as well as complications caused by southbound vehicles attempting to complete a U-turn movement at TH 169/ERX Access Road to reach the ERX parking facilities using northbound TH 169. Using an iterative process, the impacts in terms of entries at the public parking access and at the southbound U-turn movement on TH 169 at the ERX Access (to turn north to the public parking access) were examined. At the 2,500 spectator level, approximately 375 vehicles are expected to turn right into the 217th Avenue access during the peak hour. The number of southbound U-turns is expected to be about 100 vehicles. While the right turn traffic can be accommodated at this level, the number of U- turns is starting to develop longer queues and delays. Above the 2,500 spectator level, these longer queues and delays would be expected to present an increased safety risk. Therefore, the expected attendance level that could be accommodated without traffic control on TH 169 is a maximum of 2,500 spectators. Using the attendance levels above, the following event divisions are presented: • Minor events, no traffic control on TH 169 necessary — below 2,500 visitors and all parking on the Carlson lot. • Medium events, traffic control on TH 169 necessary — between 2,500 and 6,000 spectators and all parking on the Carlson lot or Plaisted parking lot on the north side of the site. Traffic Management Plan 9 Elk River Extreme Motor Park