[Tagging] Using restriction and restriction:vehicle for the same restriction relation should be discouraged

[Tobias Knerr]

On 29.10.22 07:13 easbar.mail at posteo.net wrote:
> I like your idea of not using the except 
> tag but rather something like restriction:value=unrestricted. Actually 
> that would be the first useful combination of restriction and 
> restriction:vehicle that I have heard of. But unfortunately this is 
> neither mentioned in the wiki nor does it seem to be used that way.

Yes, this is something that would require a proposal to introduce, it's 
not established practice at this point. The reason I mention it in this 
discussion is indeed that it would be one example where restriction and 
restriction:vehicle on the same relation could meaningfully coexist. So 
I wonder if a wording could be used that would leave this door open for 
the future, e.g. by discouraging "different types of restriction on the 
same relation" (or some better wording to the same effect).

> I'm still wondering: Do we ever need different restriction values for 
> different vehicles, or for different conditions, for the same relation?

No, with the exception of the "unrestricted" concept I mentioned, this 
should never be necessary. Even if there is an obscure real-world 
situation with different restrictions on the same turn (same 
from-via-to) for different vehicles, it could be modelled with separate 
relations.