Hello all,
I am working on a research project that looks at the maximum distance a person can travel by bus from a given intersection within one hour at specified time intervals, such as 4:00 PM.
To do this I have created a route shapefile and stop points from the GTFS (Google or General Transit Feed Specification) data
For each stop on each trip along each route I have the arrival time and departure times of the buses, which I have standardized into impedances by calculating the hours elapsed since the beginning of the interval. My problem is that I am unsure of how to restrict transfers to trips that have not already occured (i.e. the total accumulated time impedance < departure time of trip) and then how to make the solver adhere to the trip sequences once a transfer has occured.
This problem has been stumping me all week; any help would be greatly appreciated!
Thanks,
Andrew