Zipper Truck ~ Shifting Moveable Median Barrier

Neatorama spots Zipper Truck and moveable median barrier...

"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 it through an S-shaped curve under the vehicle, and deposits the block into the other lane. The entire bridge-rearranging process should take less than ten minutes."