On Thu, Nov 4, 2010 at 4:22 PM, Nathan Edgars II <nerou...@gmail.com> wrote:
> If there's a specific intersection or stretch of road that's hazardous > to a law-abiding cyclist, consider cycle_hazard=* (like > cycle_hazard=door zone or cycle_hazard=bike lane to right of right > turn lane). > > On Thu, Nov 4, 2010 at 3:37 PM, Dale Puch <dale.p...@gmail.com> wrote: > > As with many OSM tags, there are objective items to begin the > > categorization. The final decision though will be at least partly > > subjective. Class:bicycle is a good start. Perhaps list specific > features > > as a base for the ranking, then things that would drop that to lower > > rankings. > > > > An example of what I mean for starting values. > > > > separate paved bike/general path = +3 > > road with bike lane = +2 > > road with bike route= +1 > > road with a good shoulder / bike friendly sidewalk = 0 > > We shouldn't take sides in the debate over bike facilities. In places > where use of a bike lane is mandatory, a street without one can be > safer than one with, since a cyclist on the former is able to cycle > defensively. (A sidepath is even worse - since it's not part of the > actual road, a safe cyclist has to yield to turning traffic at every > intersection and driveway.) > > We already tag most of the above, and a router can create its own > values based on whether the user wants to ride in the gutter or in the > general purpose lane. shoulder=paved seems like an obvious tag for > that purpose, and I'm not sure what you mean by a 'bike friendly > sidewalk'. > Nothing specific, but probably something wider than a regular sidewalk with curb ramps but not a dedicated bike/exercise trail. I was just looking for things to flesh out the example, and did not mean them as a very serious place to start for safety/quality ranking. As this shows, good descriptions, and pictures would be important to get reasonably consistent results from differing users. -- Dale Puch
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