Humor Magazine

Zipper Truck At Work On Presidio Parkway

By Gerard @presurfer
Presidio Parkway is a roadway tucked into the natural contours of the Presidio of San Francisco and the Golden Gate National Recreation Area, one of the largest urban parks. Watch as the barrier transfer machine, known as a 'zipper truck,' adjusts the moveable median barrier.

YouTube link
(thanks Cora)

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