[Talk-transit] bus route/relations done right

[Peter Miller]

On 17 Nov 2009, at 12:57, Roland Olbricht wrote:

>> Can I suggest we define some terms.
>>
>> A Line is all the journeys made using a particular reference (4, X13,
>> Citi1 etc).
> [...]
>> A Line Variant (also know as a Service Variant) is a unique stopping
>> pattern for a bunch of Journeys within a Line. (ie inbound, outbound,
>> inbound via the school, outbound but stopping at the station and not
>> going to the end of the route etc).
> [...]
>> I strongly suggest we don't add this data to
>> OSM - it is too complex and not needed for mapping and should be kept
>> in the schedules service.
>
> I strongly refuse that point of view. From the preceding discussion, I
> conclude that the paradigm of bus services varies very much between  
> different
> countries.
>
> I don't know the situation in Great Britain, so I'm referring to the  
> situation
> in Germany (in particular: Düsseldorf, Münster, Wuppertal),  
> Switzerland, The
> Netherlands, Belgium and maybe other countries. In these places,  
> most bus
> services have very few variants (in general two, one forth and one  
> back) and
> timetables are very stable. For example, in Wuppertal more than 90  
> percent of
> all services have not changed even their timetable in the last 15  
> years. Thus,
> the timetable information has a similar complexity than the  
> information about
> lines.
>
> The paradigm can be found under the name "Integraler Taktfahrplan"  
> in German
> or "Horaire cadencé" in French. I have not found an English  
> translation.
> Roughly, it would be "Integrated fixed-interval timetables".
>
> On the other hand, there is no free timetable service in Germany or  
> France.
> Thus, having the essential information (Where exist direct services?  
> Which
> connections a designated and thus reliable for changing trains?) in  
> OSM would
> be a great help.
>
> So I would suggest to encourage mappers to add timetable information  
> whenever
> an integrated fixed-interval timetables exists. This might not apply  
> to Great
> Britain, but I think we shouldn't take this as a reason to map Public
> Transport elsewhere worse than possible.

I think I was making two separate points.

1) That a Line and a Line Variant are different concepts and we should  
use them consistently.
2) That in my opinion it would be sensible to stop at Lines and not  
integrate more detail.

If we agree on 1) then we can allow people to make personal judgements  
about 2) for their areas.



Regards,


Peter


>
> Cheers,
>
> Roland
>
>
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