A study from the Community Service Society, which supports the effort, estimated that it would cost the Metropolitan Transportation Authority $194 million a year if just 361,000 of the eligible New Yorkers make use of a half-cost MetroCard. The study says that the MTA, which offers reduced fares for the disabled and elderly, could be made whole from the city's budget or new revenue from higher gas surcharges and new bridge tolls. The city would also save money from the $48 million it spends on MetroCards for people enrolled in job training and education programs.