Fuck Cars
A place to discuss problems of car centric infrastructure or how it hurts us all. Let's explore the bad world of Cars!
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I assume this is contingent on the existing line being fairly straight and direct? Where I live, the tracks are very meandering to navigate hills and valleys, and train staff told me the chance of an upgrade was basically zero.
Definitely impossible for most tracks. Possible for some, but at high costs. Germans have been upgrading some lines for decades now... The best (worst) example being the north-south towards Basel. For high speed the paths need to be further apart from eachother, there need to be better barriers between tracks and what's around them, the curves indeed need to be wider, the 'tilt' in the track in curves might need to be adjusted too... All of which leads to necessity of many new bridges and tunnels where this upgrading is impossible due to surroundings. It costs many millions of € per km and many decades to accomplish. The French on the other hand mainly went for "build new lines", it was clearly the better approach to get shit done fast (tho skipping many possible stops altogether on the new lines).
It's possible to upgrade a line like that, but it will involve a lot of cutting through hills or building bridges over valleys
Isn't that fundamentally just making a new line?
It could take the same route, just flattening out the hills and valleys.
If there are sharp corners that might not work, but even lower speed rail doesn't really like sharp corners. They can be mitigated up to a certain point with banked curves.