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Federal security funding for the MBTA has been cut in half, part of a sharp decline for the transit agency in recent years and a nationwide drop in grants to local and state authorities.
Officials at the MBTA said the agency applied for more than $15 million in security grants, but will receive just $3.25 million, down from $6.6 million in 2012.
The decline will not affect police staffing levels or some planned security improvements, but it means the agency cannot undertake a range of projects, such as additional security measures at stations, yards, and tunnels.
An MBTA official said he was disappointed by the drop in funding but said the agency had not counted on the money and it would not affect core operations.