 To meet post-war demands, EMD opened another locomotive production facility in Cleveland, Ohio, in 1948.ALCO-GE was EMD's strongest competitor during the dieselization era, having produced the first road-switcher diesel locomotives in 1941 and gained about a 26% market share of diesel locomotives, mostly for switching and short-haul applications, as of 1946.ALCO's higher-powered locomotives for mainline service were less successful, as they were plagued by reliability problems.