ペン・セントラル鉄道
The Railroad Revitalization and Regulatory Reform Act of 1976, , often called the "4R Act," is a United States federal law that established the basic outlines of regulatory reform in the railroad industry and provided transitional operating funds following the 1970 bankruptcy of Penn Central Transportation Company. The law approved the "Final System Plan" for the newly created Conrail and authorized acquisition of Northeast Corridor tracks and facilities by Amtrak.