The Turboliners were a family of gas turbine trainsets built for Amtrak in the 1970s. They were among the first new equipment purchased by Amtrak and represented an attempt by Amtrak to update its fleet with faster, more modern trains. The first batch, known as RTG, were built by the French firm ANF and entered service on multiple routes in the Midwestern United States in 1973. The new trains led to ridership increases wherever they were used; the fixed consist proved a detriment as demand outstripped supply.