The Traffic Barrier-Transfer Machine Caltrans is studying the durability and performance of its Barrier-Transfer Machines, also known as “zippers.” Facebook Prev Article Next Article Engineering Checkout these cool gadgets... Related Posts The Hyperloop May Disrupt More Than Just Travel What Are the Chinese Building Underground in Hainan? Affordable housing? ByFusion turns waste plastic into RePlast bricks to make cheap homes One rotation of windmills powers a home for one day 30,000-ton bus terminal moved horizontally in China Homemade Full-size Electric Airplane