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 Tsunami Survival Capsule Hyperloop Explained The real reason streetcars are making a comeback The Haptic Tech That Could Let You Touch The Person You’re Skyping With This Radical Redesign Could Keep Gas Engines Pumping What Took China So Long to Master Ballpoint Pens?
