On 11/05/2015 09:42, André Pirard wrote:
The problem is that if you don't find a phone number you may miss a 
phone call but that if you use wrong access or routing tags you will 
instantly have GPSes send cars, bikes or pedestrian on the wrong road.
It's really difficult to have it understood that GPS software blindly 
obeys rules and that tags must also strictly obey the same rules for 
the GPSes to work.  The many many routing tags errors are a real 
PITA.  Even wrong instructions in the documentation causing 
contributors to be misinformed.  Is OSM suitable for GPS ????
Hell yes*  :)

Seriously, I presume that's a rhetorical question. I've been using OSM data in a car satnav (in the UK) for years, and when in someone else's car sometimes end up playing the "BMW-vs-Google-vs-OSM-on-an-eTrex" game, and (apart from postcodes, which is a different issue to access tags) OSM pretty much always wins. I suspect that that might not be the case in e.g. raw TIGER-infested areas of the US, but in the UK and in Australia I genuinely haven't had a problem.
Cheers,

Andy

* Sorry, I've been been watching far too much general election coverage over the last few weeks.
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