[OSM-talk] TAG-Suggestion: highway:trailer_shipment

[Carsten Moeller]

Ulf Lamping schrieb:
> Am 15.01.2010 15:43, schrieb Carsten Moeller:
>> Hey folks,
>>
>> first of all I'll have to apologize my bad english.
>> I also hope that this is the right place for my question.
>>
>> I'm playing around with pgRouting and OSM - mainly in the north of
>> Germany. (Schleswig-Holstein / Hamburg)
>> I came across some annoying issues.
>> There are several islands that can only be reached by ferry or train.
>> So I filtered tags like railway=rail, route=ferry in combination with
>> motorway=yes (For the germans: you all should know the Hindenburdamm to
>> the island Sylt).
>> The first thing that is quite wrong is that streets are connected to
>> railroads the whole way long. In case of Sylt you exactly have one ramp
>> in Niebuell and another in Westerland (Sylt). In between you have to go
>> pickapack. By the way, it's the same problem with the ferries.
>>
>> So, as these kinds of transports' main purpose is "replacing" highways,
>> they should be regardes AS highways.
>>
>> So what about tags like
>>
>> highway = trailer_railway
>> highway = trailer_ferry
>>
>> we then could connect them to streets as if they were highways.
> 
> Just yesterday I've collected infos about a more general approach to 
> this. However, I've focussed on the terminals and not on the way between 
> them.
> 
> The problem: This stuff is also available for "long distance" (e.g. 
> overnight) travel from north to south europe with varying routes, so 
> simply using highway=trailer_railway probably won't work well here. 
> Maybe better using a relation for this?
> 
> I've appended my first ideas for a proposal page.
> 
> Regards, ULFL
> 
> 
> motorail
> 
> Regular transportation of car/motorcycle "packed" on a train and travels 
> to the destination.
> The driver travels together with it's vehicle and may need to stay 
> inside the vehicle or travels in a normal (or sleeping) train waggon.
> 
> Both short term (e.g. through the channel tunnel) and long term (e.g. 
> overnight from Hamburg to Vienna) travels are common.
> 
> This is *not* for plain car transportation, e.g. delivering a newly 
> build car from the manufacturer to it's a customer.
> 
> 
> What to tag:
> The specific place to "board the train".
> 
> Suggested tag:
> amenity=motorail_terminal (on node or area)
> name=* (e.g. Autozug Terminal München-Ost)
> operator=* (e.g. Deutsch Bahn AG)
> 
> Clarify:
> Also tag route/destinations? Maybe using relations?
> 
> See Also
> amenity=ferry_terminal
> 
> Weblinks
> http://en.wikipedia.org/wiki/Motorail
> http://de.wikipedia.org/wiki/Autoverladung (german)
Hello Ulf LLLL...

yes, osm relations are one possible solution. But from the view of a 
pgRouter it is a very stony way to collect that data back into a routing 
table. You are right, that there should be a tag like "terminal" or 
"ramp" or even simpler "link".
 From the perspective of a "street map" a pickapack railway or ferry has 
the same quality as e.g. highway=pedestrian.
So I'd prefer sth. like highway=railway, highway=ferry, 
highway=railway_link and highway=ferry_link.
This info is enough for pgRouting to create a topology.
Additional properties can be assigned to "amenity" or "railway" of course.