I have never created a multimodal network from scratch before. I want to use General Transit Feed Specification (GTFS).txt files for a New York MTA public transportation network.

What files do I need to begin the process before I even ask about the steps to be performed in QGIS? I already have a lions street file.

closed as too broad by Vince, Jochen Schwarze, whyzar, JGH, Mark Ireland Oct 9 '18 at 13:55

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