Re: [Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-21 Thread André Pirard
On 2014-03-20 15:29, Martin Koppenhoefer wrote : 2014-03-20 15:02 GMT+01:00 André Pirard a.pirard.pa...@gmail.com: Following a gentle dispute on OSM-talk-be about the class of a particular

Re: [Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-21 Thread Paul Johnson
On Fri, Mar 21, 2014 at 11:24 AM, André Pirard a.pirard.pa...@gmail.comwrote: The problem comes with such roads as Belgian N674http://www.openstreetmap.org/way/72502906#map=17/50.53927/5.64976which is uniformly classified as national on IGN official maps. On the eastern part, it's worth the

Re: [Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-21 Thread Fernando Trebien
Why 40, or why 50? Are these sensible choices for ways like those below? * http://cdn.c.photoshelter.com/img-get/ILEZumn6Zhqo/s/900/900/ERITREA-00085-BC3.jpg * http://www.mongolia-travel-guide.com/image-files/mrm-mongolia-main-road.jpg *

Re: [Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-21 Thread Philip Barnes
On Fri, 2014-03-21 at 13:29 -0500, Paul Johnson wrote: Does anyplace outside North America subjectively tag highway=* or is it formally tied to the official classification in most places, such as it is in the UK? In the UK, tertiary/unclassified/residential is subjective, other roads are

Re: [Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-21 Thread Fernando Trebien
Brazil has no official system of classification (there is an administrative classification, which the Brazilian community found useless to determine the way's importance), so we've come up with this general recommendation (which may not be followed closely, in which case the mapper should add a

Re: [Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-21 Thread Philip Barnes
On Fri, 2014-03-21 at 17:15 -0300, Fernando Trebien wrote: Brazil has no official system of classification (there is an administrative classification, which the Brazilian community found useless to determine the way's importance), so we've come up with this general recommendation (which may

Re: [Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-20 Thread André Pirard
On 2014-03-16 22:37, Fernando Trebien wrote : Hello, Following from this conclusion (https://lists.openstreetmap.org/pipermail/tagging/2014-March/016904.html), I'm now trying to find a way to use tracktype, smoothness and surface to improve routing quality. For an

Re: [Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-20 Thread Martin Koppenhoefer
2014-03-20 15:02 GMT+01:00 André Pirard a.pirard.pa...@gmail.com: Following a gentle dispute on OSM-talk-be about the class of a particular road, I pointed out without any follow-up that road classification (primary ... tertiary, as well as national ... local on IGN maps) is very subjective

Re: [Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-20 Thread Fernando Trebien
Even so, we would still have to presume things about the driver's personality (an adventurous person would not care much about rougher surfaces, while a precaucious one would probably rather avoid them). We can pick a standard personality (we don't even know that very well without some statistics,

Re: [Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-20 Thread David Bannon
On Thu, 2014-03-20 at 15:02 +0100, André Pirard wrote: Following a gentle dispute on OSM-talk-be about the class of a particular road, I pointed out without any follow-up that road classification (primary ... tertiary, as well as national ... local on IGN maps) is very subjective but that the

Re: [Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-20 Thread Fernando Trebien
We can't assume a relationship with road quality but I think we can assume some approximate relationship with maximum safe speed. No matter how smooth and well maintained a narrow (say 3m wide) road is, you can't drive safely at 90kmph on it, specially if it has curves. On Thu, Mar 20, 2014 at

[Tagging] Opinion on meaning of tracktype, smoothness and surface for routing

2014-03-16 Thread Fernando Trebien
Hello, Following from this conclusion (https://lists.openstreetmap.org/pipermail/tagging/2014-March/016904.html), I'm now trying to find a way to use tracktype, smoothness and surface to improve routing quality. For an average 4 passenger car (not an SUV, not a truck, not a motorcycle), I believe