Multiple taxi reservations at the same busStop are not always grouped

[PhilippWidmann]

Whether multiple consecutive taxi reservations at the same busStop are combined into one stop depends on their order: If the passenger position is ascending in direction of travel, they will be grouped. If not, the taxi will have to drive loops to collect all passengers. See also the attached example.

This is an issue in drtOrtools, as the order of reservations at the same busStop for dispatching is essentially random. Sorting in drtOrtools would be an option, but I'm wondering if the behaviour can be better addressed in SUMO directly.

dispatch_stop_grouping.zip

SUMO-version: v1_19_0+1552-1b122d1d49e

operating system: Windows 10