Live data from Hacker News

ICE test train reaches speeds of up to 405.0 km/h

deutschebahn.com

21–30 of 152 posts

Re: ICE test train reaches speeds of up to 405.0 km/h

#21

Earlier quoted context omitted.

That's exactly it, it's not the new top speed they need, they lack efficiency. And it's not just Deutschebahn. For example BVG, who runs busses and U-bahn in Berlin is even less reliable.

I think higher speeds can help efficiency. For example it can help catch up a train that has been delayed.

It can, but it requires the track to be free in front of it and being allowed to go at the required speed to catch up.

Re: ICE test train reaches speeds of up to 405.0 km/h

#22

Earlier quoted context omitted.

I think higher speeds can help efficiency. For example it can help catch up a train that has been delayed.

It can, but it requires the track to be free in front of it and being allowed to go at the required speed to catch up.

Yes but it’s a strictly better situation to be in although your point is valid.

Re: ICE test train reaches speeds of up to 405.0 km/h

#24
post #8

I fear that the general public in Germany will not be praising this achievement. The once efficient and punctional trains in Germany have deteriorated severely in the past years due to lots of delayed maintenance causing lots of delays and even regular cancelations of trains. Also the road infrastructure is suffering from delayed maintenance.

Meanwhile our trains in the USA run at 50-100 km/h and are nonexistent in most places, so it's still an achievement.

Re: ICE test train reaches speeds of up to 405.0 km/h

#25
post #4

Earlier quoted context omitted.

Recently took some of these in Germany, was a pretty pleasant experience! It was a bit odd how the ticket prices seem to fluctuate a lot over there based on timing (like 20 EUR if you buy half a week ahead of time, closer to 40 EUR nearer to travel date, at least in my case) but I much preferred taking the train over flying.

For every train, there is a fixed number of tickets per price category. So sometimes, you can still find cheap tickets ("super sparpreis") a day before because thag specific train didn't have many bookings:)

Aw hell they picked up on that stupid American capitalist crap?

I worked in Germany in 2005 and back then everything was fixed price per kilometer for each train class, and you could get rail passes of sorts and get on whatever the hell trains you want during their validity. I'd take train roundtrips after work just to watch sunsets.

Re: ICE test train reaches speeds of up to 405.0 km/h

#26

Earlier quoted context omitted.

Interesting; America seems to be suffering the same fate. It takes municipalities years to fix highways. The main highway running through Silicon Valley, 101, has been under construction for more than a decade and is in dire need of improvement. It seems the network of roads built in the 40s, 50s and 60s just can no longer be done efficiently.

That’s largely a California problem. Here in Texas we are building highways on top of highways.

The Texas interchange stacks are terrifying if you're not used to them. The first time I went up a five level stack I legit thought I was going off the edge of the road into the sky or something, and was gonna die. I was not prepared lol.

Re: ICE test train reaches speeds of up to 405.0 km/h

#27

Earlier quoted context omitted.

It can, but it requires the track to be free in front of it and being allowed to go at the required speed to catch up.

Yes but it’s a strictly better situation to be in although your point is valid.

Do you imply that trains would normally run slower than what they can safely achieve?

Re: ICE test train reaches speeds of up to 405.0 km/h

#28

Amdahl's law in effect - which is the reason trains in Germany top out at 300 and most at 250.

There's another factor in HSR speeds: track degradation and maintenance. If you run the trains faster, they cause more wear to the tracks and require more frequent maintenance, and also tolerances on the tracks need to be kept tighter. Germany already seems to have trouble doing maintenance on time, so running trains faster would make this worse.

Re: ICE test train reaches speeds of up to 405.0 km/h

#29
post #8

I fear that the general public in Germany will not be praising this achievement. The once efficient and punctional trains in Germany have deteriorated severely in the past years due to lots of delayed maintenance causing lots of delays and even regular cancelations of trains. Also the road infrastructure is suffering from delayed maintenance.

It is a pretty limited achievement as-is: ignoring maglevs, a tgv test train reached 575 kph back in 2007, and China had test trains reaching 487 in 2011. China’s next-gen is being deployed with goals of a 400kph service speed.

Also a German ICE test train was clocked at over 400 km/h back in 1988

Re: ICE test train reaches speeds of up to 405.0 km/h

#30
post #26

Earlier quoted context omitted.

That’s largely a California problem. Here in Texas we are building highways on top of highways.

The Texas interchange stacks are terrifying if you're not used to them. The first time I went up a five level stack I legit thought I was going off the edge of the road into the sky or something, and was gonna die. I was not prepared lol.

The interchange stacks are wild but we are also really into double decker highways. All of which also have frontage roads so that’s practically triple the amount of road.
Post reply on HN