title: How can I list all the stops associated with a route using GTFS?
body: <p>I'm working with some <a href="https://developers.google.com/transit/gtfs/" rel="noreferrer">GTFS</a> data and would like to be able to create a list of all stops associated served by a route. I don't really understand how to do with with GTFS data.</p>
  
  <p>Trips.txt comes in a format like this: </p>
  
  <p><code>route_id,service_id,trip_id,trip_headsign,direction_id,block_id,shape_id
  1,A20120610WKD,A20120610WKD_000800_1..S03R,SOUTH FERRY,1,,1..S03R
  1,A20120610WKD,A20120610WKD_002700_1..S03R,SOUTH FERRY,1,,1..S03R
  1,A20120610WKD,A20120610WKD_004700_1..S03R,SOUTH FERRY,1,,1..S03R
  1,A20120610WKD,A20120610WKD_006700_1..S03R,SOUTH FERRY,1,,1..S03R
  1,A20120610WKD,A20120610WKD_008700_1..S03R,SOUTH FERRY,1,,1..S03R</code></p>
  
  <p>I tried reading in the matching shape using the shape_id and then looking for stops with matching latitudes and longitudes but that doesn't seem to work reliably. Does anybody know how to do this?</p>