[bluGill]

https://pedestrianobservations.com/2023/11/24/curves-in-fast... is a good analysis for anyone who doesn't want to believe jcranmer or wants more detail. (what I linked is a second best approach, but it links to other low hanging fruit like switches)

[paddy_m]

I read that post, and I have been working slowly on a set of jupyter notebooks, with ipyleaflet (mapping) integration to make building train maps (with max speeds) easier. Looking for colaborators

https://github.com/paddymul/train-calculator

[jcranmer]

And the first link in that post goes to https://pedestrianobservations.com/2019/02/08/fix-the-slowes..., which more directly speaks about the impact of slow speeds in station throats.