[Tagging] Slow vehicle turnouts

Albert Pundt roadsguy99 at gmail.com
Sat Aug 25 15:25:20 UTC 2018

lanes:forward and lanes:backward is definitely correct here. No need to
make a whole new tag for it, and I really don't see how it's too tedious to
map this way (plus adding something like hgv:lanes:forward=no|designated
for the situation).

On Sat, Aug 25, 2018 at 11:12 AM Dave Swarthout <daveswarthout at gmail.com>

> Kevin wrote:
> > lanes:forward=* and lanes:backward=* is the best that I've found so
> >far to describe truck climbing lanes and similar features. They don't
> >appear in your image to be grade-separated, so they don't need to be
> >separate ways - one way for each section of the road, with appropriate
> >lanes:forward and lanes:backward appears to describe what's on the ground.
> That's what I had been doing previously and I know this would be "correct"
> but it's so tedious to split and classify the highway lanes. I was looking
> for a shorter, easier method.
> Warin suggests passing_lane but I'm not wanting to start pushing
> another new tag out there. Even that tagging scenario will require
> additional tags (e.g., direction) to distinguish such a passing_lane from
> the other lanes, or one would have to draw a separate "lane" the way I did
> it in the example.
> I noticed a comment in another thread about the old directive "don't map
> for the renderer". The poster suggests that we must either map for the
> renderer in cases where routing is concerned so that our work is useful
> somewhere down the line, or else convince someone to provide routing
> support. Does anyone know if any of the more popular applications consider
> the "passing_place" or "passing_places" tags when determining routing?
> Thanks for the responses,
> Dave
> On Sat, Aug 25, 2018 at 5:55 AM Warin <61sundowner at gmail.com> wrote:
>> On 25/08/18 10:17, Dave Swarthout wrote:
>> > I've been trying to decide tagging for slow-vehicle turnouts
>> > consisting of a lane added to the right side (in the U.S.) of the road
>> > so that slow moving vehicles can pull aside to allow following
>> > vehicles to pass. The best I can come up with is the tag
>> > highway=passing_place but strangely it applies only to nodes. I'm
>> > looking for examples from the real world similar to the one in this
>> > JOSM screenshot. I've selected both the passing lanes to color them
>> > red so you can see them.
>> >
>> Passing place .. I know them from Scotland - on a single lane road (two
>> way) if;
>> you come up behind a slow moving vehicle they are supposed to pull in to
>> the next 'passing place' and let you by,
>> you see an oncoming vehicle you are supposed to pull into the next
>> passing place .. unless the oncoming vehicle gets into one.
>> Of course the actual road rules may be different from my observations ..
>> but for a practical perspective that is the behaviour I have observed.
>> Passing places have barely enough room for one vehicle towing a caravan.
>> They are not that long. And you actually have to come to a complete stop
>> in them .. too short to do anything else.
>> I have followed a slow moving vehicle for some distance .. going by a
>> few 'passing places' with no pulling over.
>> And I have come across oncoming vehicles where I have pulled off the
>> road risking getting bogged as there were no convent passing places
>> available.
>> > I had been using a variable number of lanes to describe the situation
>> > but these two passing_places are offset making using the lanes tags
>> > cumbersome to apply, 4 separate pieces, lanes going in different
>> > directions, oneway sections, etc. According to the Wiki, the
>> > passing_place tag is to be used only on nodes.
>> > (https://wiki.openstreetmap.org/wiki/Tag:highway%3Dpassing_place) Why
>> > this should be so, I do not understand.
>> >
>> > https://www.dropbox.com/s/p4g4t7mk6e4161l/passing_place.jpg?dl=0
>> >
>> > What alternatives do I have?
>> Make a new tag.
>> passing_lane?
>> In some instances here the traffic is directed into the side lanes, with
>> one centre land for passing...
>> a danger here is with opposing traffic where opposing people want to pass.
>> I take the chicken view - if there is opposing traffic that I cannot see
>> around then I will not take that centre lane.
>> This centre lane might also be termed a 'passing lane'.
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> --
> Dave Swarthout
> Homer, Alaska
> Chiang Mai, Thailand
> Travel Blog at http://dswarthout.blogspot.com
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—Albert Pundt
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