 Between 1954 and 1958, three-fourths of the trolley lines were abandoned, and 984 trolley cars had been scrapped, replaced by 1,000 new buses.The Southeastern Pennsylvania Transportation Authority (SEPTA) was established in 1964, as part of efforts by the Pennsylvania legislature to coordinate government subsidies to various transit and railroad companies in southeastern Pennsylvania.The provision of public transit service was becoming increasingly unprofitable in the 1950s and 1960s, and cities across the country were municipalizing their transit systems or creating regional public transit authorities.