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<p>Am 06.04.2022 um 19:57 schrieb Yves via talk:<br>
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,,<br>
All in all I'd prefer explicit mapping.<br>
..<br>
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<p>Could you provide us with an example of a road that you consider
to be completely explicitly tagged?<br>
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<blockquote type="cite"
cite="mid:20B07FB1-90C9-4A40-8F64-1927C324738B@mailbox.org">Regards,<br>
Yves <br>
<br>
<div class="gmail_quote">Le 6 avril 2022 13:40:02 GMT+02:00,
Martin Koppenhoefer <a class="moz-txt-link-rfc2396E" href="mailto:dieterdreist@gmail.com"><dieterdreist@gmail.com></a> a écrit :
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<div>I just noticed a recent edit to the good practice page
and it made me reflect about the current consensus.<br>
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<div><br>
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<div><a
href="https://wiki.openstreetmap.org/w/index.php?title=Good_practice&diff=next&oldid=2276559"
moz-do-not-send="true">https://wiki.openstreetmap.org/w/index.php?title=Good_practice&diff=next&oldid=2276559</a></div>
<div><br>
</div>
<div>The edit was surely executed in good faith, and while I
generally agree, it touches a sensitive topic.</div>
<div>The changes to the title seem ok, loosing "your" is
probably an improvement, while saying that "objects in
reality" means "specific objects" is probably the same.</div>
<div><br>
</div>
<div>Regarding the U-Turn-Restrictions in Brazil, it may be
fine to encourage not mapping them explicitly (it is
already on the restrictions page), but there is a slippery
slope (in this instance it seems ok, because mapping
restrictions is not only tedious and the precious mapper
time could be spent better, relations also increase the
data complexity for everyone and make the following edits
more complicated).</div>
On the other hand, from a legal point of view the situation
is no different from the absence of maxspeed signs in the
second example, where we do map implicit limits, or similar
to the turn restrictions we map because of specific divider
markings (and in some places you may even cross a continuous
divider line to turn left into a property). There is a
specific object (an intersection) because of which the
U-turn is forbidden.<br>
<div><br>
</div>
<div>For example, highway=pedestrian (at least if signed as
a pedestrian zone with no additional signs), may allow
cyclists to use the road, or may not, it depends on the
country. Generally we rely on people "translating" the
local rules to normalized universal tagging (ideally, in
reality there are local tagging preferences to model the
same situation). While we could leave this all to the
routing engines and defaults, it typically produces bad
results, so that mappers who want to use the data now, are
adding tags to describe explicitly what might in theory be
resolved by encoding language and region specific rules.<br>
</div>
<div><br>
</div>
<div>For example if a country has a rule, no spitting on the
street, we should not add this to every street. Or "no
stealing" to a shop (potentially any shop). <br>
</div>
<div><br>
</div>
<div>The second example is somehow contradicting the rule
i.e. it weakens the rule by showing an example where it is
not applied, so that's ok as it adds relativity ;-)</div>
<div><br>
</div>
<div>What are your thoughts about this rule, what is it
meant to prevent, and what is beyond the intentions?<br>
</div>
<div><br>
</div>
<div>Cheers,<br>
</div>
<div>Martin<br>
</div>
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