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Vertical Elements 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 />�r <br />■t'_ O <br />source: institute or I ran sportanon Lngin ears Iran¢ calming: state of <br />Practice <br />Effects <br />Volumes <br />May decrease traffic volumes <br />Speed <br />May reduce speed <br />Traffic Noise and Air <br />Little or no effect <br />Traffic Safety <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 turn <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 turn safely <br />APRIL 2005 34 <br />