is enhancing the segment's infrastructure. The LIRR is required to install a positive train control signaling system on all its trackage by the end of 2018. The MTA initially budgeted $29 million in its 2015–2019 capital program to add signals along the 10 mile segment from Ronkonkoma to Yaphank. This upgrade would install signals, track circuits and automatic speed control (ASC). However, in a 2017 amendment of the capital program, the agency postponed the construction of the new signal system, only including $2 million to fund design. After positive train control was activated on the easternmost portion of the Montauk Branch in November 2017, the Greenport Branch became the only portion of the LIRR that lacked positive train control. In its 2015–2034 20-Year Capital Needs Assessment, the MTA describes extending electrification eastward from Ronkonkoma to Yaphank or Riverhead, as well as the addition of a second track between Ronkonkoma and Yaphank as long-term needs. However, the MTA cites the high cost of electrification and other components as a barrier to present-day action. If electrification were to be extended eastward, stations would also need upgrading, since all station platforms east of Ronkonkoma are only long enough to fit one-and-a-half train cars. Stations West of , most trips go on to terminate at , though some terminate at . References Long Island Rail Road branches Transportation in Nassau County, New York Transportation in Suffolk County, New York