One pet peeve that gets to me is something that's done on a lot of commuter railways and S-Bahns, the 10/20 minute schedule. The schedule looks like:
2:10
2:20
2:40
2:50
3:10
etc, when it should be like this:
2:10
2:25
2:40
2:55
3:10
This minimizes waiting and allows for frequent service every 15 minutes..
What are your pet peeves?
Anything more than 10 minutes between vehicles during peak time is absolutely unacceptable for a transit system, no matter how low the ridership is. From (at the very least) 8am-6pm you should be able to walk out at any time and catch a bus/train without planning
And I say “no matter how low the ridership is” because if it’s longer than 15 minutes your ridership is going to stay low because it’s easier to drive.
Love having headways that are 30 minutes and the stops for two lines at a key transfer point are perfectly timed so that you’ll just miss it as you get off and be forced to wait for half an hour.