From an efficiency standpoint, it never made sense that the G line didn't already extend at least to Fourth Avenue-Ninth Street, as that's an important connection between the F and the R. But, hey, the subway system was designed to ferry passengers from the outerboroughs to the city and back again. In recent years, however, New Yorkers have begun to bypass Manhattan entirely, traveling, say, from one Brooklyn neighborhood to another. This can be difficult by subway; for example, though DUMBO and Williamsburg are almost neighbors, a train ride takes at least half an hour, and includes a trip across the river. (A ferry ride takes about five minutes.)
The G train is the only line in the whole system that doesn't go into Manhattan. These days, the MTA should be looking to expand such non-Manhattan-centric interborough travel—not restrict it.
Sign the petition and tell the MTA you agree.
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