Complex sentence: Federal transportation grants were awarded in 2011 for improvements at Kingston station, including the construction of a third track, which will be used by Acela trains as the through track to bypass the station, helping to alleviate passengers' safety concerns.
Split into simpler sentences: Federal transportation grants were awarded in 2011 for improvements at Kingston station. A portion of the grants included construction of a third track, which will be used by Acela trains as the through track to bypass the station, helping to alleviate passengers' safety concerns.