On Thu, May 21, 2020 at 3:36 PM Joseph Eisenberg <joseph.eisenb...@gmail.com> wrote: > > > Would you also say then that a way tagged as highway=path/footway/cycleway, width=4 would be an error? > > No. Here in Portland, Oregon, most of the "multi-use paths" (mainly cycleways, but also used by pedestrians and sometimes horses) are 3 to 4 meters wide, and occasionally even wider. Police sometimes drive cars on these paths to access emergencies, and the bridges are strong enough for a motor vehicle, but non-emergency vehicles are excluded and the paths are clearly made for bikes and pedestrians. That makes sense.
> > a way intended for walking, running, cycling is highway=path/cycleway/footway (functional classification) , unless its width is greater than a certain amount (which hasn't been specified) (physical classification), then it might be highway=track, service, pedestrian, or something else. > > It is incorrect to use the different highway values for physical classification; the differences are functional. Usually the form follows the function. E.g. a highway=pedestrian is generally a whole street where motor vehicles are excluded (though they might enter for emergencies or at certain times for deliveries). That too makes sense. > > A way that is used to access a private residence from a public road is highway=service, service=driveway (functional classification), unless it is too long (exact distance not specified), or too rough (physical classification). > > The length and surface do not have any bearing on the classification, in theory. While it's true that highway=track is sometimes misused for unpaved driveways, this is generally an example of mistagging for the renderer, since many styles do not render unpaved service roads differently, unfortunately. It's possible for private service roads to be several kilometers in length, though this is much more common for industrial or business-related service roads, rather than residential driveways. Up in the mountains around here we have some long driveways (although several km would be rare), either because the property itself is very large, or because it is an inholding in the National Forest.
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