[Tagging] Pre-proposal: gambling

Matthijs Melissen info at matthijsmelissen.nl
Fri Sep 27 23:09:16 UTC 2013

Dear all,

There are currently various tags for gambling-related shops and amenities
in use, including amenity=casino, shop=bookmaker, shop=betting,
shop=lottery, and shop=gambling. See here for an overview of usage
http://wiki.openstreetmap.org/w/index.php?title=Proposed_features/gambling .

As shops and amenities for gambling are already widely used, we should aim
to stay as close to the current way of tagging as possible when writing a
proposal. However, the usage statistics to which I linked show some issues
with the current way of tagging, which would be good to resolve. These
issues include the following.

- The current tagging contains some ambiguous tags. For example,
amenity=gambling is used for both bookmakers and casinos.
- Some real-world objects are tagged in (many) different ways. For example,
bookmakers are tagged as shop=bookmaker, shop=betting, and (less
frequently) amenity=gambling. Lotteries are tagged in many different ways
as well.

Data consumers (and end-users as a consequence) would benefit if these
issues were resolved. Fixing current tagging will probably be difficult,
but more guidance in the form of well-documented tags might help prevent
these issues at least for future tagging.

In order to create clearer documentation for future mappers and resolve
ambiguities, I am interested in the opinion of the community on the
following questions.

1. Should we map all gambling-related places in a single way, for example
as amenity=gambling and then specify with gambling=*-tags, or should we
keep different tags for different kind of gambling places?

2. If we want to use different tags for different kind of gambling places,
which types of gambling places should we distinguish? For example:
- Should we distinguish bookmakers and lotteries? Note that some places
combine sports betting with traditional lotteries.
- Should we distinguish casinos (with croupiers) and 'playing halls' (or
whatever they are called) without croupiers?

With kind regards,
Matthijs Melissen
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