[OSM-newbies] bicycle "sharrows"

[Stewart C. Russell]

On 14-10-14 01:44 AM, William Leddy wrote:
> 
> Do you (or anyone else on the list) have any experience with uMap? Comments?

Yes. It's good. If you want to share map detail you've drawn, it's about
the simplest way to do so. I haven't used it for group collaborative
mapping, and I don't think you can have it render on top of custom tiles.

Mapping individual road markings in OSM may not be ideal. Road features
are typically within about 5 m of true, if GPS surveyed, and who knows
where if they're from old TIGER data. If you're arguing with the city
down to legal placement of markings, your GPS might not even plot these
markings as being on a road. Ways (roads) are usually marked as
centrelines, and the ROW width only hinted at in the rendering.

cheers,
 Stewart