[Tagging] Sample tagging for highways with no lane markings

yo paseopor yopaseopor at gmail.com
Wed May 23 17:53:15 UTC 2018

Also I add


Salut i marques vials

On Wed, May 23, 2018 at 5:34 PM, Tod Fitch <tod at fitchdesign.com> wrote:

> On May 22, 2018, at 12:48 PM, Paul Johnson <baloo at ursamundi.org> wrote:
> In the case of your typical bog standard American residential street, I'm
> strongly disinclined to agree that this is a two lane situation.  I'd be
> inclined to mark unpainted lanes in the cases where channelization
> regularly occurs without the pavement markings anyway.  This isn't the case
> on residential streets, as people will tend to drive right up the middle of
> such streets, only movingly right to meet oncoming traffic and maybe when
> approaching a stop sign.
> Hmmm. I guess driving culture may vary from place to place in the US. I
> always keep to the right regardless of the existence of a lane markings. I
> will admit, however, that traffic studies indicate that the average driver
> will be a bit more to the center of the pavement if there are no lane
> markings. Similarly, at least in residential areas, it has been found that
> drivers will generally go slower if there is no center marking. At least
> that is the rational my local government is using to remove the center
> divider marking for traffic calming purposes.
> I know that road design varies over the world and even, to a certain
> extent, within different states in the United States. So this discussion is
> showing different regional points of view. A typical, or to borrow the UK
> slang  “bog standard”, American suburban residential street is wide enough
> for parallel parking on each side and space for trucks/lorries to get past
> one another [1]. Typical parking lanes are about 8 feet (2.4 meters) and a
> typical traffic lane is 12 feet (3.7 meters). So a total pavement width is
> typically around 40 feet (12.2 meters). In some parts of the world, even in
> older crowded US cities, a road of that width might be striped for four
> lanes of traffic. But a typical US residential street has no lane markings.
> I can see the logic of only using the lanes tag if there is paint on the
> pavement. But that leads to another issue: It is pretty easy from
> experience to glance at a photo of a road and say it is wide enough for two
> lanes of traffic. But it is much harder for me to determine a width
> accurate to a couple of feet. I don’t see a way to show a measurement error
> estimate [2] and listing something as width=40'0" implies much more
> accuracy than a guess based on a quick visual survey or imagery actually
> provides.
> I am rambling. To the point, if I were to add my photo [1] to the urban
> highway tagging examples page of the wiki [3] what tags should it have. My
> current guess is:
> highway=residential
> parking:lane:both=parallel
> sidewalk=right
> surface=asphalt
> width=40'
> For the specific example given by the photo, what tags would you suggest.
> Thanks!
> [1] https://www.dropbox.com/s/1g3vt0egw4ntg7q/2018_0523_
> 072821_908_173.jpg?dl=0
> [2] https://wiki.openstreetmap.org/wiki/Map_Features/Units
> [3] https://wiki.openstreetmap.org/wiki/Highway_tagging_samples/urban
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