The Southern California Rapid Transit District (SCRTD sometimes called RTD) was established by the California Legislature in 1964 to plan, build and operate a regional rapid transit system along with the operation of a regional bus system. It was created from the existing and first public agency for this purpose, the Los Angeles Metropolitan Transit Authority (LAMTA), established in1951 and expanded in 1957. The major public transportation providers were privately owned and operated. In 1958 the two largest companies were purchased by the LAMTA (often called the first MTA), Los Angeles Transit Lines (LATL), successor to Los Angeles Railway (LARY) and Metropolitan Coach Lines (MCL), successor to the Pacific Electric Railway (PERY) passenger operations. SCRTD merged with the Los Angeles County Transportation Commission (LACTC) effective April 1, 1993 to become the Los Angeles County Metropolitan Transportation Authority (LACMTA or MTA).