3 ms·
In Europe most high speed rails use dedicated tracks. For example, tracks for high speed trains are welded together, unlike tracks for slower trains. Instead of
by bonzini 8y ago
In Europe most high speed rails use dedicated tracks. For example, tracks for high speed trains are welded together, unlike tracks for slower trains. Instead of leaving a small gaps along the track, high speed tracks deal with thermal expansion by pre-stressing the tracks with hydraulic tensors [1] as they are welded (so high speed trains have no too-toom-too-toom :-))
[1] https://en.m.wikipedia.org/wiki/Rail_stressing https://en.m.wikipedia.org/wiki/Rail_stressing
- tuukkah 8y agoIt seems most tracks today are welded for less maintenance: https://en.m.wikipedia.org/wiki/Track_(rail_transport)#Continuous_welded_rail https://en.m.wikipedia.org/wiki/Track_(rail_transport)#Conti...
- rootusrootus 8y agoAFAIK basically all new rail installations, even freight, are continuous rail. At least in the US. Been that way for quite a while now.