The proposed rule will likely require as much as 90 percent reduction in diesel engine emissions and diesel fuel that is even cleaner than the low sulfur fuel voluntarily adopted by the industry in 1993. While railroads continue to use fuel that has sulfur levels exceeding 3,000 parts per million, the agency is expected to reduce highway diesel fuel to 15 to 20 parts per million sulfur. Clearly trucking is part of the problem, but far from being the only source of vehicle pollution. But trucks can t do it alone.
Air pollution comes from many sources.
Off-road diesel equipment such as locomotives, farm tractors, bulldozers and marine vessels emit twice as much particulate matter and oxides of nitrogen as commercial diesel trucks. Current shortage and supply problems are occurring in a relatively un-complicated diesel product market.