If not, as character_running_speed_modifier looks to be modifiable, presumably I could use on_player_changed_position and a check for the tile they're on (assuming there isn't an existing player property that includes their current tile?) and update character_running_speed_modifier accordingly ...

Realism vs not; how they work is how they work.


I agree, this is the way they've always behaved and changing that carries some risk. It's ultimately up to taste, but IMHO the acceleration around top speed just "feels off" and this is what I found when I looked into it.

In lieu, is there any ...

A log: https://pastebin.com/9dmBKmSH

The Problem

Air resistance should be proportional to velocity squared, but it is currently only proportional to velocity.

Symptoms

In vanilla, trains accelerate more than they should at high speeds and don't accelerate as much as they should at low ...