Central cut the New London–Boston trip. In 1976–77, Amtrak operated the Clamdigger as a Providence-New Haven round trip with limited local stops; for three months in 1978, it was revived with additional commuter-based stops. It was replaced in April 1978 by the New Haven–Providence–Boston Beacon Hill, which made local stops including Branford, Madison, Old Saybrook, Niantic, New London, and Mystic. The Beacon Hill (which served the Providence and Boston commuting markets rather than New Haven) was discontinued in 1981 due to funding cuts, ending commuter rail service in Connecticut east of New Haven. Initial service In 1981 and 1986, legislation was proposed to restore commuter service between New Haven and New London, as well as between New Haven and Hartford. A 1986 CTDOT study analyzed congestion on Interstate 95, which runs parallel to the line. The study showed that Old Saybrook was a better terminus for initial service, with an expected ridership of 420 riders in each direction daily. An additional study in 1989 indicated higher potential ridership of 700 to 1350 daily riders. Based on the 1986 study, Governor William O'Neill ordered CTDOT in October 1986 to initiate rail service on the corridor. It was established as a temporary service to newly reopened local stations between Union Station in New Haven and Old Saybrook, to alleviate traffic congestion that arose from scheduled construction work on I-95. O'Neill introduced a $50 million transportation program that included $900,000 (later reduced to $500,000) for basic stations and $4 million to refurbish 12 Budd Rail Diesel Cars for rolling stock. The RDCs were found to be insufficient and two diesel trainsets were purchased from the defunct PATrain service in 1989 instead. Testing of the equipment on the Northeast Corridor began on December 2, 1989. The state bought Amtrak's New Haven maintenance facility in May 1989 and signed a service contract with Amtrak in November. Construction of 5 intermediate stations was completed in April 1990. Shore Line East service began on May 29, 1990, with four trains each direction during the morning and evening. The service carried the Clamdigger name during planning; "Shore Line East" did not appear until shortly before service began. Shore Line East was threatened to be cut in 1991 by newly elected Governor Lowell Weicker, but it proved more popular than expected, and was effectively made permanent. A 1996 study found that Shore Line East captured eight percent of regional