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Still smarting over fare hikes, Red Line riders yesterday were irked anew as they were forced to board cramped shuttle buses in steamy, 90-degree weather as a four-weekend-long signal-replacement project got under way.
Beginning yesterday, service on the Red Line from Ashmont to JFK/UMass stations was halted due to the project, which will create weekend diversions for a month. Many passengers, caught off guard by the sidelined subway, grumbled about their trips taking longer on traffic-snarled streets.