1995年晚些时候，经修订的“清洁空气法案”将生效，其中许多条款是关于油漆的新规定，特别是涉及到在铁路车辆制造中应用多年的含溶剂的醇酸树脂和环氧树脂。在184种油漆活剂和挥发性有机化合物中，美国环境保护署认为有问题的是二甲苯、甲苯以及其它碳氢基产物，在设备涂漆时 In late 1995, the Clean Air Act, as amended, will come into force, many of which are new provisions on paint, particularly those involving solvent-based alkyds and epoxies that have been used for many years in the manufacture of railway vehicles. Of 184 paint activators and volatile organic compounds, the U.S. Environmental Protection Agency considers the problems as xylene, toluene and other hydrocarbon-based products,