ABSTRACT
The United States freight railroad industry is currently experiencing unprecedented growth in traffic volumes, revenue ton-miles, and wheel loadings. Railways have been a significant mode of transport for 175 years in the United States. During the late 1800s and early 1900s it was the dominant mode. In recent years train speeds, gross ton-miles, and axle loads have increased significantly on the freight railroads. This marked turn around began in the early 1980s as the industry was relieved by many of the regulations that had stemmed innovations and growth for approximately 50 years.
