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EPA regulations have cut emissions from truck and off-road diesels in recent years, and environmental groups applauded EPA’s March 1 move to make other transport modes subject to tighter emission rules. The proposed Clean Air Locomotive and Marine Diesel rule “is fitting the last piece into the clean diesel puzzle by linking clean fuels and new engine technology,” said EPA spokeswoman Jennifer Wood. Locomotives would have to begin using ultra-low-sulfur diesel in 2012.For the full story, see the March 12 print edition of Transport Topics. 