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Median% <br /> <br />Description: <br />Raised island in the center of the roadway with <br />one-way traffic on each side <br /> <br />Application: <br /> · Used on wide streets to narrow each direction <br /> of travel and to interrupt sight distances down <br /> the center of the roadway <br /> <br /> · Narrowed travel lanes provide 'friction" and <br /> can slow vehicle speeds <br /> · Significant opportunity for landscaping and visual enhancement of the neighborhood <br /> · Can utilize space which otherwise would be "unused" pavement <br /> · Can be used to control traffic access to adjacent properties if desired <br /> <br /> Disadvantages: ~i <br /> · Long medians may impact emergency access potential <br /> · May interrupt driveway access and result in U -tums <br /> · Will require removal of parking if lane is less than 18 feet <br /> · May require circuitous access to driveways by residents <br /> · Creates a physical obstruction in the travel-way <br /> <br /> Variations: 5 · Medians of various lengths can be constracted <br /> · Can be constructed mid-block only to allow all <br /> turning movements at intersection <br /> · Can be extended through intersections to preclude left <br /> turning access, or side street through movement, if desired <br /> Special Considerations: ~1 <br /> · Vegetation should be carefully designed not to obscure <br /> visibility between motorists, bicyclists and pedestrians at <br /> intersection and pedestrian crossing areas <br /> · Maintain 12 foot wide lane minimum on each side <br /> · Maximum length between access points should be 200' to <br /> accommodate emergency response -turning radius for a fire <br /> truck should be maintained at these breaks <br /> · May impact bicycle safety <br /> <br /> Cost: <br /> · High cost to construct, landscape and maintain <br /> <br /> Page <br /> <br /> <br />