egrets@lemmy.world to BestOfLemmy@lemmy.worldEnglish · 2 months agoWhy upgrading existing train tracks to high-speed is a costly challengelemmy.worldexternal-linkmessage-square0linkfedilinkarrow-up113arrow-down12
arrow-up111arrow-down1external-linkWhy upgrading existing train tracks to high-speed is a costly challengelemmy.worldegrets@lemmy.world to BestOfLemmy@lemmy.worldEnglish · 2 months agomessage-square0linkfedilink