By the mid-1970’s, the thousands of first generation locomotives were showing the age after 20 years or so of service. The GP15 series was introduced by EMD in 1976 as an alternative to these rebuilding programs.
By the mid-1970’s, the thousands of first generation locomotives were showing the age after 20 years or so of service. The GP15 series was introduced by EMD in 1976 as an alternative to these rebuilding programs.