FULL /DIAGONAL DIVERTER These might adversely affect residents' access to their properties. Gaps can be left for pedestrians and bikes. Click here to view detailed plan layout   Full or Diagonal diverters create a blockage from one corner to the diagonal corner of an intersection and effectively prohibit some turns and all through movements at an intersection. They are used to force traffic movements into a particular pattern to reduce volumes on selected streets.   Care should be taken to involve residents in the decision making process because full or diagonal-diverters can affect access patterns to residences.   Effectively reduces traffic volumes and speeds on certain streets. Gaps for pedestrians and bikes can be left.   Temporary Installation   Temporary Diverter Installation Permanent Installation   Portland, OR Source: http://www.trans.ci.portland.or.us/ PROS 1. Reduces traffic speed. 2. Reduces traffic volumes. 3. Reduces cut-through traffic. 4. Self-enforcing. 5. Enhanced landscaping opportunities possible. CONS 1. May reduce access for emergency vehicles. 2. Diversion to longer routes may cause inconvenience to and be opposed by affected residents. 3. Not suitable on transit routes. Summary of Effectiveness Volume Reduction Yes Speed Reduction Yes Safety Improvement Possible - - Streets to Use On Collector, Local Local Use on Bus Route No Use with Curbs and Gutters Yes Spot or Area-wide Use Spot - - Emergency Service Access Issues Yes Impacts on Arterials Possible Change in % Trucks Possible Environmental Changes Unknown - - Dependence on Enforcement Self-Enforced Level of Violation None - - Aesthetics and Landscaping Possible

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