[OSM-dev] Help: Bus Stop Data Extraction for Bus RoutingService

Shuyan Chen chenshuyan0221 at hotmail.com
Tue Feb 9 10:36:24 GMT 2010


Many thanks for your reply.

As you mentioned,
> There might be bus routes which do not stop at a certain bus stop, although
> its route is going along that way (think of regional buses).

there are many bus routes which do not contain bus_stops in the member of the relation,yet stops exist in the way which the buses travel along.

Does it mean those stops in the ways are not the bus stops for the correspondent bus route, and bus route do not have any stops?

Cheers,

Grace



--------------------------------------------------
From: "Stephan Plepelits" <skunk at xover.htu.tuwien.ac.at>
Sent: Tuesday, February 09, 2010 11:15 AM
To: "Shuyan Chen" <chenshuyan0221 at hotmail.com>
Cc: <dev at openstreetmap.org>
Subject: Re: [OSM-dev] Help: Bus Stop Data Extraction for Bus RoutingService

> On Tue, Feb 09, 2010 at 11:04:31AM +0100, Shuyan Chen wrote:
>> When we came to extract bus data from the element of “Relation”, we found the
>> stopping point data in a relation are always incomplete in bus route data,
>> meanwhile, we also noticed there are bus stopping points in the ways which are
>> contained in a bus route relation.
>>  
>> What is the difference between the stop nodes within a relation and the nodes
>> tagged as “bus_stop” in highways which are also contained in a relation?
> As I understand it, a node which is a bus stop should be tagged as
> highway=bus_stop with a name. If a route stop at that bus_stop, it should
> be member of that relation. The role should be either stop, forward_stop or
> backward_stop, to indicate whether that bus stops at that stop in both
> directions or either in forward or backward direction (measured along the
> way where the node is member of ... often the node is not on the way, but
> next to the way).
> 
> There might be bus routes which do not stop at a certain bus stop, although
> its route is going along that way (think of regional buses).
> 
> An interpretation of that data you can see in the OpenStreetBrowser[1].
> 
> [1] http://www.openstreetbrowser.org
> 
> greetings,
>        Stephan
> -- 
> Seid unbequem, seid Sand, nicht Öl im Getriebe der Welt! - Günther Eich
> ,---------------------------------------------------------------------.
> | Stephan Plepelits,                                                  |
> | Technische Universität Wien   -    Studien Informatik & Raumplanung |
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