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Trains in Switzerland are not allowed to have 256 axles

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Re: Trains in Switzerland are not allowed to have 256 axles

#21

Earlier quoted context omitted.

So if you want to move around Switzerland undetected, commission a train with 256 axles and bam! You're invisible :P

Haha one can imagine this will be rapidly bred out of the species since it's such a significant maladaptation. Like dressing in Vantablack and running on a rural expressway.

To catch intruders dressed in Vantablack, you'll need one of those devices they use to find exoplanets.

Re: Trains in Switzerland are not allowed to have 256 axles

#25
post #23

I'm not sure why they're even counting past 2 (the minimum number of axles to indicate a railcar is present, at least until someone delivers self-balancing single-axle railcars) for train detection. Unless it's to estimate track wear, or for revenue collection?

Trains are typically made up of multiple carriages. The axle counters ensure that all the carriages which enter a section of track leave that section of track, and that none have detached and been left behind for the next train to run into.

Re: Trains in Switzerland are not allowed to have 256 axles

#26
post #23

I'm not sure why they're even counting past 2 (the minimum number of axles to indicate a railcar is present, at least until someone delivers self-balancing single-axle railcars) for train detection. Unless it's to estimate track wear, or for revenue collection?

One of the primary uses of these kinds of devices is in lieu of track circuits: for a given rail block, they count the number of axles currently present by subtracting the number of axles that exited from the number that exited. Another use is to detect trains that have a failed coupling, disconnecting several cars which no longer have a powered locomotive attached to them to move them.

Re: Trains in Switzerland are not allowed to have 256 axles

#27
There was something posted on HN years ago about a mainframe that ran the French railway pension system. There was something funny about different pay rates for rates going uphill or downhill, whether the engineer was a military veteran, etc. Does anyone have a link? I can’t find it now. Thanks.

Re: Trains in Switzerland are not allowed to have 256 axles

#28

TIL: Per the article, this 256 limitation also applies to number of users in WhatsApp conversations and the maximum block height of a Minecraft world.

Also reminds me of the maximum amount of coins you can have in runescape: 2.147B. They even created silver coins worth 1000 normal coins as a workaround for people who get to a “max cash stack”.

(Max value in java, even though the game is non longer written in Java)

Re: Trains in Switzerland are not allowed to have 256 axles

#29
post #25
post #23

I'm not sure why they're even counting past 2 (the minimum number of axles to indicate a railcar is present, at least until someone delivers self-balancing single-axle railcars) for train detection. Unless it's to estimate track wear, or for revenue collection?

Trains are typically made up of multiple carriages. The axle counters ensure that all the carriages which enter a section of track leave that section of track, and that none have detached and been left behind for the next train to run into.

To elaborate on this, I think what is going on is a section has a "counter-upper" on one side, and a "counter-downer" on the other side.

So while the train is within that segment, the value of the counter is non-zero. Once they exit, all the axles should get counted again in the opposite direction and reset the count to zero.

The problem with 256 is that the count would be at zero while you were in the track segment.

Re: Trains in Switzerland are not allowed to have 256 axles

#30
The thing is Switzerland is also the only country where I could imagine someone might know such a rule. Say you are working on connecting some trains, and you happen to be one car away from 256 axles. Well, if the org you're working for is SBB/CFF/FFS I could totally imagine the foreman saying "oh wait, there's a rule about this". Any other country, no way.

From personal experience people there seem to follow the rules very meticulously.

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