3 ms·
Track for high speed trains can be very expensive. Unless land is very flat, it's not uncommon for >50% of track to be on bridges/in tunnels.
by dx034 8y ago
Track for high speed trains can be very expensive. Unless land is very flat, it's not uncommon for >50% of track to be on bridges/in tunnels.
- taobility 8y agohttps://en.wikipedia.org/wiki/Beijing–Shanghai_high-speed_railway https://en.wikipedia.org/wiki/Beijing–Shanghai_high-speed_ra... The HSR between Beijing and Shanghai has 87% length are elevated.