I have a question.
Why arenít shorter express trains with, perhaps, more automation and more spurs and sidings a feasible way to decrease travel times? Or, would such a modification work?
Is it possible to make high-speed rail more like personal rapid transit so that there is less deceleration and acceleration involved?
Maintaining constant speeds is so important for this mode that I question why the subject has not been addressed in the 50 years since high-speed rail was first introduced. The technology is seemingly there in order to make such an all-express system cost-effective.