Mateusz Konieczny via Tagging <tagging@openstreetmap.org> writes:

> Feb 25, 2023, 19:58 by g...@lexort.com:
>
>> I am assuming --  but the wiki is unclear -- that
>>
>>  access=private, tagged on barrier=gate
>>
>> means that all modes of travel have a right of access only with
>> permission
>>
> note that some may not physically fit (even with permission your elephant
> may be still not fitting some entrances)

Good point; I was sloppy.

It implies that a mode phsyically fits if it fits on the ways on either
side of the barrier.

>>  and that
>>
>>  access=private
>>  foot=yes
>>
>> means that all modes need permission except for foot which has a legal
>> right to pass.
>>
> note that often foot=permissive would be more accurate
> but foot=yes is used
> (especially common in areas where legal right of way is rare or not
> existing and basically all =yes are actually =permissive)

A fair comment about typical.  I am thinking of a specific place in my
town where the road/track is privately owned, the gate is locked,
motor_vehicle=private but it is actualy true that foot=yes because the
town paid for a deeded easement to the public.

>> With
>>
>>  access=private
>>  foot=yes
>>  locked=no
>>
>> then it's clear that physical passage is possible for all modes.
>>
> not entirely
>
> for example if tagged on highway=footway line thenĀ  I would
> not assume that car would fit there

A fair complaint; I meant but did not say that it is possible if the
rules would say it works if the barrier were not there.


> what worse, even if tagged in say highway=service this gate may
> be not large enough to fit a car

highway=service by definition is enough for cars so if there is a gate
on a highway=service that does admit cars on both sides, but is not wide
enough for a car, then I would say this is mistagged and there should be
a short way that is path or whatever.

>>   With
>>
>>  access=private
>>  foot=yes
>>  locked=yes
>>
>> then it says that phsical passage is not possible and hence if people
>> can walk around then it needs a way representing walking around.
>>
> this one is tricky and expecting that it will be used consistently
> will not work well

True, but we have to guess at what is right, and then when users do it
wrong explain and fix.

> +1 to separate bypass ways if matching reality
> not sure how to handle cases where bypass way does not work
> (for example you can crawl under lift gate, it is allowed, you cannot get 
> around it)

I guess that's still a separate way that's path with a height
restriction, even if it overlaps.

>> I realize there have  been "but we can invent complicated bypass tags"
>> but those seem to not interact well with existing data consumers and it
>> does not seem we have consensus.
>>
> +1 though some cases where bypass way does not work are annoying

I think if we let it overlap it's ok.

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