Moving Traffic Medians

The City of New York Department of Transportation uses this road zipper, which moves traffic medians to optimize highway capacity during peak traffic times. The 2003 zipper moves barriers by lifting each 1-meter barrier section, bringing it underneath the machine, and placing it one to two lanes away.  The system can transfer a mile of concrete barrier up to two lanes in less than 10 minutes. 

The DOT operates and maintains the vehicle, and it is used on a two-mile segment of the Long Island Expressway.


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