[Tagging] gross weight - conclusions & changes

[Martin Koppenhoefer]

2013/6/29 martinq <osm-martinq at fantasymail.de>

>
> Based on the interesting discussion so far, following conclusions from my
> side:
>
> (1) Remove the '_':
> maxgross_weight was a horrible choice from my side. If we have
> 'maxaxleload', then maxgrossweight is OK, but less irritating.
>
> (2)
> For consistency with (1), for the value in conditionals is also changed to
> 'grossweight' without '_', e.g. maxspeed:hgv = 80 @ (grossweight > 7.5 AND
> 22:00-05:00)
>


Do we really need 2 tags, maxgrossweight and grossweight? What is the
difference?



(3) Don't touch 'maxweight' definition:
> Since we must assume that 'maxweight' (100,000 uses!) was used for gross
> weight limits (e.g. signs with the lorry + weight) as well as for actual
> weight limits (e.g. signs with weight number only) in the past, any attempt
> to modify the tag retrospectively just causes chaos [the tag is somehow
> broken or at least very imprecise].
>



IMHO you can assume that maxweight is about the actual weight (this is for
4 years on the wiki:
http://wiki.openstreetmap.org/w/index.php?title=Key:maxweight&oldid=358579),
and ignore or better correct the few very recent pages that show the
lorry+weight sign (AFAIK only 1 example on conditional tagging in the
wiki). Obviously mappers that notice the problem will correct it, where
grossweight (maxgrossweight) was intended but maxweight was tagged.


Only gradual replacement by new & more precise tags and the recommendation
> to use the new tags instead of the inaccurate 'maxweight' [deprecate
> maxweight] makes sense.
>


-1, I'm against burning a well established and defined tag just because on
one other recent wiki page there is a problem in the examples section.
Better correct that contradiction.



> (4)
> If definition of 'maxweight' is not changed [see (3)], we need a new tag
> for the "actual" weight.
>


first of all: of a vehicle combination (needed e.g. in Finland) or of a
single vehicle (needed in most of the vienna convention countries)? The
single vehicle is defined for maxweight. I'd stick with that.

cheers,
Martin

>
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