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that 160 km/h is the range of speed I calculated in my post #74.
The Wiki just give us the max. speed (as many journalists) of the train for the tests, not at that part of the track - not at the time of accident.
they opted for "Köln Ehrenfeld" - I think - because the train is going the west side of river Rhein.
In HBF = central station that would mean a direction change to go to and from AAchen.
Köln Ehrenfeld is just west of HBF and therefore west of the Ring (downtown) of Köln. With Ehrenfeld they can...
I like to add some tech. ideas here:
a) it's a test train => it records much more and much faster a lot of sensor signal info compared to any Black-box, there or not. If it was the Train the investigators will know within a few days. There is enough recorded data.
b) the curve radius (at the...
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