[Tagging] Route relations - Forward & Backward

[Jo]

If that is the case, then this street will be present in some variations of
the bus routes for that line and the parallel street will be a member in
the other set of variations.

An example:

https://www.openstreetmap.org/relation/3389343

You'll have to click on the route relations in this route_master. Where the
routes go over the highway between Brussels and Leuven and Leuven and
Aarschot, it's obvious they are using the side of the highways which goes
in their direction of travel.

Hopefully this clarifies what I mean by variations. This one has 4, 2 in
each direction.

Jo


2014-09-06 5:59 GMT+02:00 John F. Eldredge <john at jfeldredge.com>:

> If a bus route makes use of a one-way street, then the bus can only go one
> direction on that street. A pedestrian can go in either direction on a
> one-way street, and a bicycle may be able to do so, depending upon local
> traffic laws. Even if a given street allows two-way traffic, the bus route
> may use that street in a single direction, with the reverse route using a
> parallel street.
>
>
> On September 5, 2014 7:39:17 AM CDT, "Dave F." <davefox at madasafish.com>
> wrote:
>
>> On 05/09/2014 12:31, Jo wrote:
>>
>>>
>>>  In bus route relations the ways don't get roles.
>>
>>
>> Why's that? How would you tag a circular route that goes only clockwise?
>>
>>  In this case some ways would be members twice.
>>
>>
>>
>> As the Relation's IDs aren't necessarily consecutive, how does a router
>> know which to follow? Or is there a way to sort them into order?
>>
>>  In walking and cycling route relations we do use them. Those are
>>>  bidirectional, whereas the bus and tram routes describe start to
>>>  terminus for all variations.
>>
>>
>>
>> I'm
>> unsure how you can suggest bus routes aren't bidirectional. They can
>> go both ways along a way the same as walkers/cyclists.
>>
>> Dave F.
>>
>>
>>
>> ---
>> This email is free from viruses and malware because avast! Antivirus protection is active.
>> http://www.avast.com
>>
>>
>> ------------------------------
>>
>> Tagging mailing list
>> Tagging at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/tagging
>>
>>
> --
> John F. Eldredge -- john at jfeldredge.com
> "Darkness cannot drive out darkness; only light can do that. Hate cannot
> drive out hate; only love can do that."
> Dr. Martin Luther King, Jr.
>
> _______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/tagging/attachments/20140906/d3f5fae5/attachment.html>