Describe the solution you'd like
In the window for each station, there should be a new tab labelled "stops", which would show all vehicles which have that station listed as a stop on their route. Each listing would include the number that stop is on each vehicle's route.

Describe alternatives you've considered
A possible alternative could be a more concise vehicle list window, giving more information per vehicle, including the above new idea.

Additional context
I'd imagine the list would look similar to a timetable, except instead of listing the stop times, it would just list the stop number for each vehicle, whether the vehicle is heading there at the moment or not, and whether it's an express stop or a local stop.

Mockup of idea. Numbers in parenthesis represent the numbers within circles on vehicle routes.