I want to use onebusaway application in my back-end server . so i already added my gtfs files into onebusaway and it 's working fine so far. but in my gtfs file there is only one route and 46 trips(onward/return) with 3 block_ids. in the first/last stop it shows both onward and return trips. but i need it to show only the onward trips in the first stop and in the last stop only the return trips .