6 Jul 2019, 12:35 by colin.sm...@xs4all.nl: > > What problem are you trying to fix here? Usually it is pretty obvious if a > street has artificial lighting or not. > > Unclear desired tagging for footways lit by spillover lighting. As I mentioned it is usually obvious but there are cases where it is not clear.
For example https://www.openstreetmap.org/way/26116023#map=18/50.06730/19.88864 <https://www.openstreetmap.org/way/26116023#map=18/50.06730/19.88864> is path on top of embankment, without own lighting, poorly lit by street lamps on a street below it. Or https://www.openstreetmap.org/way/238304937#map=16/50.0738/19.8891 <https://www.openstreetmap.org/way/238304937#map=16/50.0738/19.8891> - cycleway along well lit road but so far away that lighting is poor and faint Or https://www.openstreetmap.org/way/161706262#map=18/50.05869/19.91701 <https://www.openstreetmap.org/way/161706262#map=18/50.05869/19.91701> lit only by ambient city light. In most cases I already tagged something, but it would be nice to check whatever it is at least sort-of similar to what others would map. > Instead of creating artificial boundaries quantising shades of grey into > black and white, why not make it more objective and record the light level in > lux on the centre line of the road? > It is not feasible to do for a typical mapper to record "light level in lux". > Also, don't forget that whether a road is "lit" or not has consequences for > traffic regulations, at least in the UK. There is a specific definition > associated with this. > I found it, "A road's speed limit is 30 mph (48 km/h) if the road's street lights are "[not placed] more than 200 yards apart" in England <https://en.wikipedia.org/wiki/England> and Wales <https://en.wikipedia.org/wiki/Wales> or "not more than 185 metres" in Scotland <https://en.wikipedia.org/wiki/Scotland>;" https://en.wikipedia.org/wiki/Road_speed_limits_in_the_United_Kingdom#cite_note-80 <https://en.wikipedia.org/wiki/Road_speed_limits_in_the_United_Kingdom#cite_note-80> but it is not helping with problem what would be a good threshold between lit=yes and lit=no on footways > > My vote is to leave lit=* alone! > > So it is preferable that everyone has their own definition of what is lit=no/yes and recommend that "in case of doubt is it lit=yes or lit=no feel free to choose either"?
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