2009/10/4 Carlos Dávila
<cdavilam@jemila.jazztel.es>
Mark Burton escribió:
> Hi Paul,
>
>
>> Can I make this a feature request then? :) Consider the following
>>
X
>> |
>> A B| C
>> --------+------->
>> |
>> <-------+--------
>> D E| F
>> |
>> \/
>> G
>> ABC is oneway in direction ABC
>> FED is oneway in direction FED
>> BE is twoway but is marked with direction BE
>>
>> U turns are not allowed for FEBC nor are they allowed for ABED
>>
>> I have several of these near me and I'm sure they're fairly common (if
>> not yet in the OSM database). Current mkgmap maps will tell me to make a
>> U turn (FEBC or ABED)
>>
>
> Well, that's a lovely bit of ascii-art. I understand completely what
> you want to achieve. Isn't it the same as having a no_right_turn for
> BED and a no_right_turn for FEB?
>
Not, because if you come from X, BED is allowed, and if you come from G,
EBC is also allowed. I don't know if XBEG exists in Pauls cases, but I
have one like this in my city.
Cheers
Carlos
not sure if mkgmap or other routing tools can resolve it if the from/to ways are not both connected to the via node. then the relation should be like this. restriction relations are documented on the wiki that the via must be a node not a way.
no_right_turn
from AB
via B -> instead way BE
to ED
crazy but this is the current definition of turn relations
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