[Tagging] Slow vehicle turnouts

Paul Johnson baloo at ursamundi.org
Mon Sep 10 17:54:02 UTC 2018


I don't think so.  Really the only thing throwing this off seems to be the
same thing throwing off people who think bus and bicycle lanes shouldn't be
counted as lanes: the solid line.

On Mon, Sep 10, 2018, 11:50 Kevin Kenny <kevin.b.kenny at gmail.com> wrote:

> It seems to me that the key attribute of the 'climbing lane' situation
> that Dave mentions is that it's an additional lane. It's provided for
> slow-moving vehicles, sure, but that's really a special case of the
> near-universal convention that slow-moving traffic gives way to
> overtaking traffic by moving to the outside (that is, in North
> America, to the right). The difference, at least where I am, between a
> climbing lane and another ordinary lane is a subtle one: you don't
> have to move to the outside if nobody's trying to overtake, rather
> than a "keep right except to pass" rule. You get 90% of the way there
> by simply having the correct number of lanes:forward and
> lanes:backward. Is adding a lane that much more complicated than
> drawing a parallel way?
> On Mon, Sep 10, 2018 at 11:31 AM Joseph Eisenberg
> <joseph.eisenberg at gmail.com> wrote:
> >
> > I'd say that it would be better to leave them unmapped than to
> incorrectly map them as separate service roads.
> > If they are only divided by a single painted line, they are just lanes,
> not a separate roadway.
> > And it's not too difficult to split the way twice and paste on a couple
> of tags
> >
> > On Mon, Sep 10, 2018 at 10:17 PM Dave Swarthout <daveswarthout at gmail.com>
> wrote:
> >>
> >> Wow, thanks for the help, Markus. I really appreciate it.
> >>
> >> But I must say, if I have to use that method to tag all the turnouts on
> the Sterling Highway, I'm going to leave them unmapped. Life is too short
> and there is a lot of other mapping yet to do in Alaska.
> >>
> >> Although these lanes are not physically separated by a barrier other
> than a painted line, I'm going to opt for the service road scenario. It is
> simple, much, much less error prone to map, and IMHO, would do the job
> better than the lanes technique.
> >>
> >> Thanks to all,
> >>
> >> Dave
> >>
> >> On Mon, Sep 10, 2018 at 6:51 PM SelfishSeahorse <
> selfishseahorse at gmail.com> wrote:
> >>>
> >>> On Mon, 10 Sep 2018 at 11:17, Dave Swarthout <daveswarthout at gmail.com>
> wrote:
> >>> > I'm still not convinced the lanes:smv tagging scenario is the best
> solution but were I to change my mind, how would I tag my turnouts?  Here
> is another screen shot of the particular section of highway with a turnout
> on both sides of the road that I've been discussing (59.752103, -151.766395
> ) with the ways removed for clarity:
> https://www.dropbox.com/s/nm6iahw9ch79tuh/slow_vehicle_turnout.jpg?dl=0
> >>>
> >>> I would probably split the road at every place where an additional
> >>> lane begins or ends, i.e. four times, and would tag the sections as
> >>> follows from right to left (this is the direction of the highway way):
> >>>
> >>> lanes=2
> >>>
> >>> lanes=3
> >>> lanes:forward=2
> >>> lanes:backward=1
> >>> smv:lanes:forward=|designated
> >>> overtaking:lanes:forward=yes|no
> >>>
> >>> lanes=4
> >>> lanes:forward=2
> >>> lanes:backward=2
> >>> smv:lanes:forward=|designated
> >>> smv:lanes:backward=|designated
> >>> overtaking:lanes:forward=yes|no
> >>> overtaking:lanes:backward=yes|no
> >>>
> >>> lanes=3
> >>> lanes:forward=1
> >>> lanes:backward=2
> >>> smv:lanes:backward=|designated
> >>> overtaking:lanes:backward=yes|no
> >>>
> >>> lanes=2
> >>>
> >>> In case the turnouts were separated by a barrier, i think your idea
> >>> with highway=service + service=slow_vehicle_turnout would make sense.
> >>>
> >>> Regards
> >>> Markus
> >>
> >>
> >>
> >> --
> >> Dave Swarthout
> >> Homer, Alaska
> >> Chiang Mai, Thailand
> >> Travel Blog at http://dswarthout.blogspot.com
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