On Thu, 2019-10-10 at 17:57 +0200, Martin Koppenhoefer wrote: > > > Am Do., 10. Okt. 2019 um 16:10 Uhr schrieb Snusmumriken < > snusmumriken.map...@runbox.com>: > > For example if you try to create a routing advice for a car > > journey. > > Let's say that the journey starts at Main street number 10 and that > > Main street is a two way street where the two directions are > > legally > > separated. Let's say that number 10 is on the right-hand side of > > the > > road and we are in a country that drives on the right side. Let's > > further say that the shortest way to the destination would be to > > cross > > the legal separation and take left. But that would be illegal. But > > there is no way the routing engine could know that. Unless the two > > directions are separated. > > > or the kind of legal separation is mapped so that the software could > know. > Or you park your car on the opposite side of the road and cross it as > a pedestrian. Or maybe you'll finding a free parking spot much > farther away and have to walk quite a bit. Or maybe they drive on the > left, you're the prime minister, and your driver will park the car... > > Of course it does not matter for those cases where you may not cross > the divider legally and you do not plan to do so, and it is mapped as > if you could not even physically, but there are usecases where you > might want to either cross illegally, or you have the special right > to do so, and then it should be possible to determine whether there > is a physical possibility or not.
You have to remember that some physical separation are just as easy to cross as a painted line. A level strip of grass can be crossed by any car. With a big SUV you can cross curbs and so on. It's just a questions about how big your car is and the nature of the physical separation. But I don't think that OSM should be about that, but rather to be a map database to be able to provide a _legal_ route from A to B. _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging