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Advanced Traffic Management System (ATMS) — In 2016, the County implemented a <br />Centracs ATMS system that is designed to make traffic signals and traffic progression <br />much more efficient. There are 64 signalized intersections that are currently online in the <br />system. <br />BEFORE <br />11 <br />AFTER <br />Illustration of the "before" and "after" of a road diet (Source: FHWA) <br />Roadway Design Trends <br />(e.g., Road Diet) <br />Four -lane undivided roadways are <br />prevalent throughout Minnesota <br />and the United States. They provide <br />a capacity benefit for moving large <br />volumes of through traffic through <br />an area in constrained right-of-way <br />situations. This design continues to <br />be beneficial if the traffic is primarily <br />from one direction and the other <br />direction has light traffic levels. <br />While there is no protection for left <br />turning vehicles off of the mainline this design continues to work if the directions are <br />imbalanced. This allows left turning vehicles from the mainline to be almost unimpeded in <br />the peak direction and the left most lane in the non -peak direction to be used as a left turn <br />lane. The downside of the design is that as volumes get higher in either direction, the left <br />turning vehicles in the peak direction may begin to be blocked by vehicles in the non -peak <br />direction or the number of vehicles in the peak direction is high enough that any slowdown <br />caused by a left turning vehicle begins to result in an unsafe situation as vehicles behind <br />the left turning vehicle now have to swerve around them or stop. When the volumes get <br />high enough, opposing left turn crashes and rear -end crashes generally increase due to <br />this situation. <br />As these issues arise, there may be a need to evaluate whether left turn lanes can be <br />provided. In many cases this results in a need to widen the roadway to accommodate the <br />left turn lanes. Another option is to convert the four -lane roadway to a three -lane road <br />with a "road diet". A road diet introduces a left turn lane along the roadway but reduces the <br />number of through lanes to one in each direction. This does result in a slight reduction in <br />capacity but also generates a substantial safety benefit. The County currently has a road <br />diet project programmed for CSAH 8 (Osborne Road) between Trunk Highway 47 and Trunk <br />Highway 65. <br />Other road diet benefits include reducing the number of through lanes to provide for bus - <br />only shoulder lanes, parking lanes, or bike lanes, where conditions permit. <br />ANOKA COUNTY 2040 TRANSPORTATION PLAN UPDATE CHAPTER 4- FORECAST CONDITIONS <br />