Was looking at the Long Island Railroad planned work and noticed they added a switch installation for Westbound trains from Jamaica to Penn Station. I wonder if it is a higher speed switch as part of the Jamaica Capacity improvement project or perhaps a train siding or something else. The disruption was minor for the weekend for people who were affected while the work is being done as it required temporary boarding platforms at three stations. They had scheduled other work which was announced in advance for other lines so the switch installation project surprised me. Positive Train Control should be fully implemented on all of the LIRR by year end.