4 ms·
I'm pretty sure TGV tracks do use ballast though, don't they? And they are among the fastest trains in operation, so it seems to work fine for them.
by seszett 3y ago
I'm pretty sure TGV tracks do use ballast though, don't they? And they are among the fastest trains in operation, so it seems to work fine for them.
- kingkongjaffa 3y agoYeah the occurrence is fairly rare which is why we don’t do much about it. And we trust that NDT(non destructive testing) like die and ultrasonic etc, periodic testing will catch any cracks.
- willyt 3y agoHere’s a TGV speed test on a ballasted track. There’s an axle cam and it doesn’t look like there’s big chunks flying about but it does stir up a lot of dust at 575km/h (~360mph) https://m.youtube.com/watch?v=EOdATLzRGHc&t=11s&pp=ygURdGd2IHNwZWVkIHJlY29yZCA%3D https://m.youtube.com/watch?v=EOdATLzRGHc&t=11s&pp=ygURdGd2I...