[Talk-transit] [Tagging] Bus routes forward/backward

[Stephen Sprunk]

Polyglot, 

Just noting the platform may sometimes not be specific enough, however,
which I suspect is why stop_positions exist. 

Keep in mind that platforms may serve multiple tracks.  For instance,
there are a few stations here configured like this: 

↓A↕B↑ 

The "regular" trains (which run the full line, every N minutes) stop on
the outside tracks while the "peak" or "express" trains (which run part
of the line, but only certain hours) stop on the middle track.  Telling
someone to take the next train from a given platform could easily send
them in the wrong direction. 

Other, similar-looking stations are set up like this: 

↓A↑B↑ 

All the trains on the left track are going to downtown, but the trains
on the middle and right track are going to different suburbs; telling
someone to take the next train from a given platform could easily send
them to the wrong place and also loses cross-platform transfers from the
left track to middle track, which might result in a missed train if
someone (especially with limited mobility) had to take the
stairs/elevator twice to get from platform A to B. 

Also, short trains may stop in different places along the
platform--including multiple trains stopping there at the same time at
peak hours, while others take the entire platform. 

So, by not marking the stop_position, one loses valuable information and
disserves users. 

S 

On 2016-07-11 02:32, Jo wrote:

> Hi Hans, 
> 
> Yes, that describes version 2. It's the currently used version, so version 1 route relations should be converted to several version 2 route relations, one for each variant of the line. 
> 
> There are a few things I don't agree with on that wiki page, like including all the stop_positions to each and every route relation. I prefer to keep things simple and only add all the platform nodes in the correct order to the route relations. (This doesn't work in places where the details for the stops are being added to the stop_position nodes). 
> 
> Relating stop_positions to platforms (and shelters, waste_baskets, benches) is better done using stop_area relations. But there too, my preference is to create one such stop_area relation per direction of travel. If it's  not done that way, those stop_area relations don't fulfill the purpose I have for them, which is to relate platform nodes to corresponding ways via the stop_position nodes. 
> 
> Since life is too short, we need a scheme that is as simple as possible and we need automation. I'm taking care of the second part. Of course, we make sure that it works with whatever scheme people want to use. It's mostly designed to fix problems with routing, making sure they are continuous, don't travel against one way traffic or over unsuitable highways/railways. 
> 
> Polyglot 
> 
> 2016-07-11 10:45 GMT+04:00 Hans De Kryger <hans.dekryger13 at gmail.com>:
> 
> https://wiki.openstreetmap.org/wiki/Proposed_features/Public_Transport#Route 
> 
> Is version 2? 
> 
> REGARDS,
> HANS 
> 
> On Sun, Jul 10, 2016 at 11:42 PM, Hans De Kryger <hans.dekryger13 at gmail.com> wrote:
> 
> Thanks Jo, 
> 
> Is there agreement on the forward/backward roles in PT2? By that i mean completely phasing them out. Or is it still an open discussion?​ I won't add them anymore if the point is to phase them out. 
> 
> REGARDS,
> HANS 
> 
> On Sun, Jul 10, 2016 at 11:26 PM, Jo <winfixit at gmail.com> wrote:
> 
> Hi Hans, 
> 
> The semantics depend on public_transport:version. 
> 
> If 1 then yes. 
> If 2 there should be no forward/backward roles anymore. 
> 
> Instead you add an ordered sequence of ways that is continuous. 
> 
> If you want a demo of how to map PT, we can do a hangout. 
> 
> Also, have a look at this: http://www.openstreetmap.org/user/Polyglot/diary/38980#comment35201 
> 
> Mapping public transport should become a lot more convenient by the time that GSoC project finishes. 
> 
> Polyglot 
> 
> 2016-07-11 10:08 GMT+04:00 Hans De Kryger <hans.dekryger13 at gmail.com>: 
> 
> If i remove the forward/backward tag on a section of a way (part of the bus route) does that signify the bus goes both ways?  
> 
> REGARDS,
> HANS _______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging
> 
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-- 
Stephen Sprunk      "Those people who think they know everything
CCIE #3723         are a great annoyance to those of us who do."
K5SSS                                             --Isaac Asimov
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