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Effects <br />Volumes <br />Speed <br />Traffic Noise and Air <br />Traffic Safety <br />May decrease traffic volumes <br />May reduce speed <br />Little or no effect <br />Possible improvement <br />Advantages <br />Reduces traffic volumes <br />Restricts vehicle access while maintaining bicycle and pedestrian access <br />Disadvantages <br />Prohibits or limits access and movement <br />Restricts access for emergency vehicles <br />May impact drainage <br />May impact parking <br />Problems Targeted <br />Cut through traffic <br />Speed forces driver to slow to make the tum <br />Design <br />The curvature of the diverter is dependent on the intersection roadway widths. <br />Special care needs to be taken with drainage design. <br />The intent is to divert traffic to arterial and collector streets. <br />Needs to be good visibility approaching the diverter for drivers to react and <br />navigate the tum safely <br />Vertical Elements <br />Full Diagonal Diverter <br />Purpose <br />A full diverter, sometimes called a <br />diagonal diverter, is a raised barrier <br />place diagonally across an intersection <br />that physically divides the intersection <br />and forces al traffic to make a sharp <br />turn. <br />source: institute of I ransportation engineers tranrc uarming: state of <br />Practice <br />APRIL 2005 <br />34 <br />