On Mon, Jun 21, 2010 at 12:21 AM, Roy Wallace <[email protected]> wrote: > On Sun, Jun 20, 2010 at 6:17 AM, Anthony <[email protected]> wrote: >> >>Personally I don't mind if they add some sort of subjective hazard level tag >>as well as these objective tags, but I think the objective tags will be much >>more useful in the long term. > > +1. Please map the cause of the hazard, instead of (or at least as > well as) a vague, subjective meta-description of a conglomeration of > factors. If you are having trouble tagging any of these factors, e.g. > traffic flow, let's discuss and fix that instead.
Absolutely. Tagging the actual hazards also has additional advantages within OSM, since it's not just a bicycle project. So instead of tagging cyclist-difficulty:2 you were to tag instead that the road is unsurfaced, you'd be helping the OSM-inline-skaters map and their tags would be helping you too. Or if the lanes are too narrow to allow cars to pass bikes easily, then tagging the width of the lanes helps improve the data for horse riders too. Or if there is heavy traffic; well, it's easy to see who else benefits. Specific, verifiable tags are how we organise OSM to promote cooperation in tagging between the whole community. If we all tag things in a bike-specific (or inline-skates specific or horse-specific) manner then we end up with parallel tagging projects. And we probably don't have the density of contributors to handle that beyond a handful of specific areas. Now as for rendering, it's very easy to pre-process the data to give each road a "cycleability" rating on a scale of 0-5 based on all the other attributes of the road. People do this kind of preprocessing already, such as http://cyclestreets.net who produce their own ratings/metric for each road using a combination of normal tags, to great result. Cheers, Andy _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
