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 19 Year Old Hopes to Revolutionize Nuclear Power These 3D Printed Homes Are Created On The Spot What Are the Chinese Building Underground in Hainan? Hyperloop Explained FIU Miami bridge disaster explained The Future of Wind Power? – Kite Powered Systems