• raised islands located along the centerline of a street that narrow the travel lanes at that location
• sometimes called midblock medians, median slow points, or median chokers

Aplications:

• are often nicely landscaped to provide visual amenity and neighborhood identity
• can help pedestrianize streets by providing a mid-point refuge for pedestrians crossings
• sometimes used on wide streets to narrow travel lanes
• work well when combined with crosswalks

	Potential Impacts: may reduce parking and driveway access reduces pedestrian crossing width may visually enhance the street through landscaping but may also limit visibility of pedestrian crossings bicyclists prefer not to have the travel way narrowed into path of motor vehicles collision, speed and volume data are not available

Emergency Response Issues:

• preferred by fire department/emergency response agencies to most other traffic calming measures

Typical Cost:

• reported costs range between $5,000 and $15,000 (1997 dollars)

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SPEED HUMP | SPEED TABLE | RAISED INTERSECTION | CLOSURE | NEIGHBORHOOD TRAFFIC CIRCLE | CHICANE | CHOKER | CENTER ISLAND NARROWING