Technology Assessment: Explosives Detection Technologies to Protect Passenger Rail

Passenger rail systems provided 10.7 billion passenger trips in the United States in 2008.11 The nation's passenger rail systems include all services designed to transport customers on local and regional routes, such as heavy rail, commuter rail, and light rail services. Heavy rail systems-- subway systems like New York City's transit system and Washington, D.C.'s Metro--typically operate on fixed rail lines within a metropolitan area and have the capacity for a heavy volume of traffic. Com...