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 Insane Engineering of the 787 Biomimicry – The world is poorly designed. But copying nature helps. Experimental tokamak thermonuclear fusion reactor Transportation of the Future – Building the Hyperloop 30,000-ton bus terminal moved horizontally in China 3 Ton Power Hammer – Would You Work Here?