Fast trips can identify problems with the input data or
conversion process. This function returns trip_ids for trips that exceed
`maxspeed`.
Usage
gtfs_fast_trips(gtfs, maxspeed = 83, routes = TRUE)
Arguments
- gtfs
list of gtfs tables
- maxspeed
the maximum allowed speed in metres per second default 83 m/s
(about 185 mph the max speed of trains on HS1 line)
- routes
logical, do one trip per route, faster but may miss some trips
Value
a character vector of trip_ids that exceed `maxspeed`
Details
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.
