Watch a Zipper Truck Reposition a Median in Heavy Traffic
(Video Link)
Zipper Trucks are amazing machines that quickly pick up and move 1,500 pound blocks of concrete that serve as median barriers on San Francisco’s highways:
Each 30-ton, 58-foot Zipper Truck is driven by a two-person team. As it passes over the barrier system, a series of wheels gently lifts each block off the street, funnels [...]
