@jon Kinda saddens me that he used several of his rushes in the station of Strasbourg, where one of the most mature SERM (service express régional métropolitain) is active on several regional lines 🥲 Has been soooo pushed by the city and GrandEst followed suite..

Taking the timetable of Steinbourg as example right now:
14:24 → Sélestat
14:33 → Saverne
15:24 → Sélestat
15:33 → Saverne
16:24 → Sélestat
16:33 → Saverne
17:24 → Sélestat
17:33 → Saverne
18:24 → Sélestat
18:33 → Saverne
19:23 → Sélestat
19:33 → Saverne
20:33 → Saverne
21:24 → Sélestat
21:33 → Saverne
21:54 → Sélestat
22:33 → Saverne
23:33 → Saverne
07:24 → Sélestat
08:24 → Sélestat

Yes there's some holes in low demand periods and night-round TER isn't really a thing, the amplitude is reduced since weekend, but for who has a fixed commute pattern this is nice (and on weekdays at the morning/evening rush hours it's a 30 minute rhythm instead of 60).

Obviously doable with crossborder too: Krimmeri-Meinau sees trains to Offenburg at **:27 and **:57, and to Strasbourg at **:29 and **:59 (not accounting the lost time in Kehl). Also one of the rare stations in the area seeing a departure past midnight.

And so is the strategic V200 between Strasbourg and Basel: every 30 minutes at predictable hours...

Yes, with comparable size Switzerland has a way more extensive and globally cadenced (and financed) railway network than the GrandEst. And GrandEst (and Strasbourg in particular) are kinda railway oddities in autoroute/LGV/Paris-centric France. But... it's "battle-tested", heck yeah of course it works when there's political ambition! ✨