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| boffin:
--- Quote from: technix on August 23, 2019, 01:18:36 pm ---I was once on a platform waiting for another train when a train speeds through at 350kph on the second line from the platform. It is loud and a bit scary to be honest. --- End quote --- Even at slower speeds, a fast train is an amazing amount of mass travelling with a mind-boggling amount of inertia. I can remember standing on the platform at Reading (west of London), and there were announcements to stand back because the HS125 was passing through @ 125mph / 200kmph. I saw it pick up someone's briefcase and hurl it down the platform from the suction; still fresh in my mind. |
| coppice:
--- Quote from: EEVblog on August 23, 2019, 02:12:44 pm --- --- Quote from: technix on August 23, 2019, 01:18:36 pm ---I was once on a platform waiting for another train when a train speeds through at 350kph on the second line from the platform. It is loud and a bit scary to be honest. --- End quote --- On the Shanghai Maglev the two trains pass each other at 430kmh, it's as scary as you think it is. --- End quote --- They pass each other at 860km/h, since each is travelling at 430km/h. The trains pass each other very calmly. Its the steep banking on the curves that disconcerts most people. |
| nctnico:
--- Quote from: technix on August 23, 2019, 01:18:36 pm --- --- Quote from: nctnico on August 23, 2019, 09:22:55 am ---That is the problem with high speed train connections. Add too many stations and the travel time will go up quickly. I see it here too. High speed train between Amsterdam and Brussels (IIRC). Some cities where it passed demanded it stopped there too. But it kinda defeats the purpose. High speed trains need to operate like airplanes which travel distances over 300km. Otherwise a car or regular trains are usually quicker. --- End quote --- China have a similar problem too, but there is a solution: HSR stations that can be passed at speed. When a CRH train passes a station, it just speeds through at 350-380kph. The running lines never have a platform next to it, except at major stations where all trains must stop at anyway. --- End quote --- That is the common solution to have high speed and low speed trains use the same track but that wasn't my point. My point is that people are inclined to demand high speed trains stop at everyone's doorstep and don't see that that slows the train down to snail speed. Public transport is simple: it takes you from a place where you aren't to a place where you don't need to be. |
| SiliconWizard:
--- Quote from: nctnico on August 23, 2019, 07:38:23 pm ---Public transport is simple: it takes you from a place where you aren't to a place where you don't need to be. --- End quote --- I like this one. ;D |
| technix:
--- Quote from: nctnico on August 23, 2019, 07:38:23 pm ---That is the common solution to have high speed and low speed trains use the same track but that wasn't my point. My point is that people are inclined to demand high speed trains stop at everyone's doorstep and don't see that that slows the train down to snail speed. --- End quote --- For each HSR line, there is a formula between the scale of economy and/or population in the area the station services, and the maximum amount of stopping trains at that station. This means that at the planning stage that demand is already capped. |
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