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 Black pearl Launch of a modern sailing ship Largest Ever Science Project Is Being Build – Nuclear Fusion Reactor Homemade Full-size Electric Airplane Building a Next Generation Neutrino Experiment Teenager Invents Quantum Space Propulsion System That Doesn’t Use Any Fuel 10,000-Year-Old Technology Helps These Home Resist Fires and Hurricanes