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 This Skyscraper Has No Shadow From New York to London by Car – Crazy Mega Project Road signs suck. What if we got rid of them all? These 3D Printed Homes Are Created On The Spot Blue Origin’s BE-3 engine cleared for flight Affordable housing? ByFusion turns waste plastic into RePlast bricks to make cheap homes