OpenStreetMap

impassable gate?

Posted by Rostranimin on 17 February 2013 in English (English)

Anyone know how to tag a gate which is impassable (tall) and only open for a few hours a couple of times a week? No idea what the legal status is - but there's a notice on the gate.

http://www.openstreetmap.org/browse/node/2002727108

Comment from robbieonsea on 17 February 2013 at 11:40

Not quite sure what you mean by 'impassable (tall)'! Height restriction?

There is the opening_hours tagging to specify timing properties:

http://wiki.openstreetmap.org/wiki/Opening_hours

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Comment from Rostranimin on 17 February 2013 at 11:59

Opening hours might do it - although from the wiki entry this is more aimed at the idea of something being open to customers (rather than open for passage). I wondered about 'access' but that's aimed at the legal status of something and that I don't know about.

It doesn't help that I don't really know what's on the other side of the gate (other than what's mapped) having never been through it (only passing by on the road).

My concern is mainly that this looks (on renderings, but probably to routers too) like it's a viable cycle route / walking route when this is normally not the case... the 'tall' comment is irrelevant really, what I was aiming at was to explain that when the gate is closed you aren't going to get past (at least not without climbing equipment!). Gate is locked most of the time (except a for a few hours a couple of days per week).

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Comment from aseerel4c26 on 17 February 2013 at 14:56

Conditional access restrictions should be the best: http://wiki.openstreetmap.org/wiki/Key:access#Access_time_and_other_conditional_restrictions . Also leave a note or source tag explaining why you tagged those time restrictions.

How that "looks" on renderings which are just too stupid/simple should not matter - what should matter is to get the data right. The rest is the job of others. And e.g. a highway map does not need take care for that specific gate info. A cycle map could tag that gate simply impassable if it is only open a few hours a week - if the map creators decide to not show the specific opening hours or a special symbol showing that the gate is open only at specific times.

You could enforce the default to "no access" by tagging it like this:

  • access=private [I assume someone has the key to open ...]
  • access:conditional=permissive @ (18:00-20:00) [assuming that there is some private ground after the gate which everybody may walk through on those two hours each day]

What do you think?

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Comment from Rostranimin on 17 February 2013 at 17:17

That looks pretty good. I like the thing about giving it a default. The only real issue might be that the access ought (I'd have thought) to be tags for the road/path not the gate. Perhaps I just have to get on my bike and investigate the other end of this to find out if I could do that... (if there is a similar gate at the other end it makes things simpler).

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Comment from Rostranimin on 17 February 2013 at 17:20

Actually scratch that comment about putting 'access' values on the road - there's no good reason why it shouldn't be on the gate itself.

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Comment from aseerel4c26 on 22 February 2013 at 23:48

@Rostranimin: thanks for your comment! If the other side of the way is also gated in a similar way then you also could tag the way with an access tag. That makes it easier for "stupid" renderers/data users which only interpret access values on ways. Otherwise: like you said.

Happy mapping!

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