1120 SW Fifth Ave, Suite 800, Portland, OR 97204
Speed bumps are asphalt mounds constructed on streets and spaced 300 to 600 feet apart
Curb extensions narrow the street by widening the sidewalk or the landscaped parking strip.
Pedestrian Improvements PHOTOS
Raised cross walks are cross walks constructed 3-4 inches above the elevation of the street.
A chicane changes a street's path from straight to serpentine
Diagonal diverters place a barrier diagonally across an intersection, disconnecting the legs of the intersection.
Traffic Volume Reduction PHOTOS
Rubber Speed Bumps PHOTOS
Traffic circles are raised islands placed in an intersection
A power point introduction to traffic calming devices
A median barrier is a concrete curb or island that is located on the centerline of a street and continues through the street's intersection with a given cross street.
Traffic Circle PHOTOS
Choke Points are curb extensions placed mid block to narrow the roadway to 14' or the equivalent of one travel lane.
Semi-diverters are curb extensions or islands that block one lane of the street.
Pedestrian refuges or slow points are small islands in the middle of the street, typically designed with marked bike lanes on both sides.
Exclusion lanes are lanes for a particular class of vehicle, excluding all others.
Cul-de-Sacs close one end of a street.
Entrance treatments consist of physical and textural changes to streets and are located at key entry ways into a neighborhood
School Improvements PHOTOS