The interregional network is the current rail network. After all, we already have a good, albeit somewhat complex rail network. Therefore, it will be simplified to 16 corridors. Fewer switches result in less technical failures. The corridor system makes for a robust timetable. The trains shuttle back and forth within the same corridor, preventing problems to affect the larger network. In the long term bottlenecks will be removed to enable fast and frequent service.
The storage room is also convenient for travelers with large suitcases. The upper deck has couches where one can talk.
The uniform design allows for economical, bulk purchase of the vehicle fleet.