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EPA introduces new Tier 3 and 4 emission standards for locomotive engines »
Rep. Mica introduces measure to establish D.C.-to-New York City high-speed service »
CSX files lawsuit against TCI, 3G Capital Partners alleging violations to federal securities laws »
CN's Dakens to retire May 1 »
BART to obtain public input on proposed extension »
Updates from Amerex Group, Radius Rail, Atlantic Track & Turnout and GuestLogix »