On Thu, 7 May 2020 at 02:05, Florimond Berthoux < florimond.berth...@gmail.com> wrote:
> Hazard tag seems to be used when there is a sign, so I'm not confident to > use it for doorzone. > > There is two choices : > 1. describe the layout of the street lanes + cyclelanes + : parking lane + > sidewalk > then add the widt of the cycle lane. > Data consumer can deduce if the lane is dangerous or not > + objective > + complete without feature tagged twice > - harder to compute doorzone state > - harder to tag (a cyclist willing to tag doorzone has to tag parking > lanes and width) > > example : > cycleway=lane > cycleway:width=1m > parking:lane=parallel > > => doorzone > > (I could add more tags, for buffer, but I keep simple as possible.) > > 2. just tag doorzone feature > (opposite arguments +/-) > > example : > cycleway=lane > cycleway:left:doorzone=yes > > Before writing this email I was not pro 1., but it's only 2 tags against > 1, problem is that you must measure the lane and that is little difficult > (our eyes are bad at that). > At the end if the two way of tagging is documented for doorzone I'm ok > with both. > I agree there are the two approaches, both can co-exist. I think (1) alone is a tad too fragile especially since if the cyclelane is a doorzone or not depends on the buffer and layout, I think it's safer to have a tag like (2) to specifically say the cyclelane is a doorzone. On Thu, 7 May 2020 at 15:33, Marc Gemis <marc.ge...@gmail.com> wrote: > but in the end, someone will probably have to add > parking:lane=parallel as well, not? The second style of mapping > nothing says nothing about the parking lane. Or does > cycleway:left:doorzone=yes implies parking:lane:left=parallel? > Yes the parking:lane tag should also be added together with the doorzone tag, I guess you could say it's implied, but it would be a pain for both data consumers and mappers to rely on this kind of implication, better to always tag it.
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