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Re: CAHSR - ruling grade?
Author: FUD
Date: 08-13-2021 - 06:23

I was impressed by Youtubes of some Spanish HSR lines, with their huge bridges and tunnels to keep the grades - and especially grade changes - to a minimum even in mountainous territory. That's probably a better example of what's necessary in California than HSR adapted to a previously higher-speed conventional line.

Vertical curves are important for comfort and safety at speeds over 250 km/hr. Horizontal curves can be mitigated by superelevation. Vertical, not so much. It's the vertical curves that give the roller coaster feeling.

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Subject Written By Date/Time (PST)
  CAHSR - ruling grade? Emp. Nero 08-11-2021 - 22:06
  Re: CAHSR - ruling grade? Emp. Nero 08-11-2021 - 22:14
  Re: CAHSR - ruling grade? Ernest H. Robl 08-12-2021 - 10:22
  Re: CAHSR - ruling grade? FUD 08-13-2021 - 06:23
  Failing grade Narrator 08-13-2021 - 10:46
  Re: CAHSR - ruling grade? Clem 08-13-2021 - 22:53
  Re: CAHSR - ruling grade? LES 08-14-2021 - 04:34


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