A varient of gtfs_fast_trips that can detect stops that may be in the wrong location
gtfs_fast_stops(gtfs, maxspeed = 83)list of gtfs tables
the maximum allowed speed in metres per second default 83 m/s (about 185 mph the max speed of trains on HS1 line)
The function looks a straight line distance between each stop and detects the fastest segment of the journey. A common cause of errors is that a stop is in the wrong location so a bus can appear to teleport across the country in seconds.