The US Department of Homeland Security (DHS) has developed a ten-by-five-metre inflatable structure that could be quickly deployed to isolate sections of transit or rail tunnels in the event of ...

MORGANTOWN, W.Va. — With a few dull thuds, the 1-ton bag of high-strength fabric tumbled from the wall of the mock subway tunnel and onto the floor. Then it began to grow. As air flowed into it ...

After Hurricane Sandy decimated the subway system last year, officials pledged to install new devices to help halt the rising tides—including flood gates and, more ...

The Super Subway Plug is here. Transit workers on Wednesday inflated a 30-foot-long, 14-foot-diameter plug in an unused subway tunnel for evaluation as a possible defense against flooding such as the ...

Scientists have successfully tested an unprecedented technology for containing flooding or dangerous gases in mass transit tunnels: a giant plug. Twenty years ago in Chicago, a small leak in an unused ...