I don't know. I don't even know why the trains of the accident in question decelerated between extremely poorly and almost not at all.You are not_addressing the question.[Gabriel links to some brake systems]
Your links are to systems already developed.
No acknowledgement that electrical control might be needed for faster response.
Unfortunately (and incredibly) the NTSB doesn't discuss that in the accident investigation report.
As you said the systems were developed. Are they being used? Are they being maintained? Am I missing something?
I don't know. Don't blame me for not addressing the question for which I don't know the answer.
What I do know is that steel on steel has a static coefficient of friction that is almost always better (and many times much much better) than 0.1. Why are we not using it to its full power? I don't know.
No, what I said is that a semi truck can brake in the same distance than a sedan at the same speed. Rubber on asphalt for both. Steel on steel cannot provide that level of friction, but it can still provide much more than what we see in the video.You just want to gripe that you think 1,200 brake shoes should make a 150-car train stop like a semi truck.