[Tagging] Unsuitable?

[SomeoneElse]

Colin Smale wrote:
>
> ... "Unsuitable for HGVs" is seen frequently in the UK. ...
>
> Taginfo gives 318 occurrences of hgv=unsuitable. The principle of 
> hgv=* (and other vehicle-class tags) using the same values as access=* 
> would also suggest there is some merit in documenting "unsuitable" as 
> a recognised value.
>
>

I'm still not convinced that "hgv=unsuitable" is be a valid access tag.  
Access _rules_ in England and Wales are complicated enough already 
without trying to include what may or may not be a good idea because you 
might get stuck.  That said, I don't yet know of a "good" way of 
recording the information beyond sticking it in a note.  FWIW I asked a 
similar question a couple of years ago on talk-gb:

https://lists.openstreetmap.org/pipermail/talk-gb/2011-October/012221.html

My guess (and it is just a guess because I haven't done it) would be 
that if you wanted to create an HGV-aware routable map it wouldn't be 
that difficult to process whatever HGV tags (along with surface and 
whatever else) there are (in notes and elsewhere) to determine "don't go 
down here".  Only when someone's done a first pass of that will people 
be able to point to a road near them and say "that road should not be 
suggested or included because...".  Until someone comes up with a better 
suggestion for tagging it's just important to record "unsuitable for 
HGVs" in some manner so that it can be converted to whatever better 
scheme emerges in the future.

Cheers,

Andy