[Routing] [motorway_link] description of direction

[Steffen Wickham]

I agree with Frederik.

I think that relations are the best solution for this issue.

But I suggest to add a member type like "track" with values 
"left/middle/right" or somthing like that.
This could be handled as hint for router or in-car routing software, 
because of complex junctions. At Braunschweig there is a junction where 
you have to use the left track as exit (right track leading to another 
motorway).

I open a proposal tomorrow, so everybody can discuss this issue.

Greets
Steffen



Frederik Ramm schrieb:
> Hi,
>
>   
>> I'd think a better 
>> solution, which would make more countries happy, would be to be able to 
>> tag a given node for example as
>>     
>
> Nodes cannot point in a direction, so having a signpost tag on a NODE
> is utterly useless except in the few situations where the node sits on
> exactly one way that is oneway ;-)
>
> The proper way to deal with this is to use relations very much like
> turn restrictions, with three members - a "coming from" and a "going to"
> way plus, possibly, the node where you change ways.
>
> The relation would then be tagged with the signage and/or driver 
> instructions that one would have to follow to get from one way onto
> the other.
>
> So the same junction could have any number of such relations ("if
> you come from A road and want to catch B road, follow the signs
> for Dypswyddle" or so). A router or in-car navigator would search
> for such relations for every junction it routes you over.
>
> This would not only cover signage, but also complex instructions
> like "use second-from-left lane and make sharp turn" or whatever.
>
> Bye
> Frederik
>
>