On Mon, Mar 20, 2017 at 11:36 AM, Volker Schmidt <[email protected]> wrote:
> Given the effect of the stopping process on the overall travel time > (mainly for cars), we need a way that can be used by routing algorithms. > It's even worse with bicycles, since actual human effort has to happen to accelerate from a stop. And even more annoying, far more frequent in some parts of the country. Seattle used to be a worst offender, sometimes having 20+ stop signs per mile on what's meant to be the main bike route through the area <http://www.bikingbis.com/2012/02/13/smooth-bike-riding-on-newly-renovated-burke-gilman-trail-section/> . > I am inserting them in quantity, but only in the simple way of a node on > the way. "My" stop signs apply to the nearest junction. > I do this as well, though this seems less than ideal for complicated situations like the Elm Street underpass under the Creek Turnpike <http://www.openstreetmap.org/way/80022916>, without getting into the fact that putting a stop sign for bicycles at an intersection every other direction and even pedestrians in the same direction get a traffic signal is *intensely* stupid ground truth to start with). > This should in principle allow a routing algorithm to determine the > directionality of the sign. I would consider having to create (and manage) > relations for this tedious, and error prone in case of editing. > Short Street <http://www.openstreetmap.org/way/422722387> immediately ruins this assumption. The southbound stop sign protecting Canyon Road is almost in Beaverdam Alley. > BTW the Stop sign is even more frequent in Italy than in the US, but it > influences much less the travel time, because drivers simply don't stop > most of the time, contrary to the practice in the US, or Germany, or the UK. > It's getting to be that way in the US, especially for bicycle facilities. Even USDOT has acknowledged this, and as recently as the 2009 MUTCD, warrants stop signs only when a yield sign would not be a safe alternative.
_______________________________________________ Tagging mailing list [email protected] https://lists.openstreetmap.org/listinfo/tagging
