<html><head/><body><html><head></head><body><div class="gmail_quote">Paul Johnson <baloo@ursamundi.org> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div dir="ltr">Sharrow markings are typically (and properly) only found on bicycle routes that do not have dedicated bicycle lanes, and bicycle boulevards. cycleway=shared_lane in the US, save for locales that Did Not Get the Memo™, should also have bicycle=designated and be a member of the appropriate type=route, route=bicycle relation.</div>
<div class="gmail_extra"><br /><br /><div class="gmail_quote">On Sat, Jan 12, 2013 at 9:05 AM, Greg Troxel <span dir="ltr"><<a href="mailto:gdt@ir.bbn.com" target="_blank">gdt@ir.bbn.com</a>></span> wrote:<br /><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im"><br />
Balgofil <<a href="mailto:Balgofil@gmx.net">Balgofil@gmx.net</a>> writes:<br />
<br />
> 1. "Radfahrstreifen": cycle lanes which are mandatory indicated by a<br />
> sign and a solid lane (cycleway=lane)<br />
><br />
> 2. "Schutzstreifen" cycle lanes with dashed lines not so wide as a<br />
> "Radfahrstreifen" and therefore only advisory and no sign (cycleway=?)<br />
<br />
</div>I think the most important thing is to define the semantics of what is<br />
required. One problem (feature?) of OSM tagging is that there are a lot<br />
of implicit defaults, and these make it hard to use the data. I think<br />
we should be gradually defining the implicit tags (in the main tag wiki<br />
page, not in the database). By that I mean things like highway=footway<br />
implies motorcar=no.<br />
<br />
It sounds like Radfahrstreifen means that a cyclist may not ride on the<br />
road outside the lane. But with Schutzstreifen, a cyclist may ride on<br />
the road to the left of the dashed line. Or by mandatory do you mean<br />
that cars are prohibited from crossing the solid (white?) line into<br />
Radfahrstreifen but not prohibited from crossing the dashed line into a<br />
Schutzstreifen?<br />
<br />
In the US, cycle lanes on roads seem to usually have solid white lines,<br />
with dashed lines for turning places. I am unclear on whether there are<br />
restrictions on cyclists in various states (in MA, I don't believe so,<br />
beyond the standard rule that cyclists must ride as far to the right as<br />
can be done safely, which is usually less far than cars think :-). But<br />
I think cars are prohibited from driving in cycle lanes - I did see a<br />
Big Brother sign exhorting cars to stay out.<br />
<br />
In the US, my impression is that sharrows are just a reminder to<br />
everyone of the normal rules which always apply and have no real<br />
significance. In that respect, they are kind of like signs that say<br />
"Please drive nicely", or "Check twice; motorcyles are everywhere.".<br />
<br />
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<br /></blockquote></div><br /></div>
<p style="margin-top: 2.5em; margin-bottom: 1em; border-bottom: 1px solid #000"></p><pre style="white-space: pre-wrap; word-wrap:break-word; font-family: monospace; margin-top: 0px"><hr /><br />Tagging mailing list<br />Tagging@openstreetmap.org<br /><a href="http://lists.openstreetmap.org/listinfo/tagging">http://lists.openstreetmap.org/listinfo/tagging</a><br /></pre></blockquote></div><br clear="all">The typical pattern here in Nashville, Tennessee, USA is for designated bicycle routes to have dedicated bicycle lanes mid-block, and sharrows at intersections, rather than have motorized traffic turn across a bicycle lane that is outside of the turn lane.<br>
<br>
-- <br>
John F. Eldredge -- john@jfeldredge.com<br>
"Reserve your right to think, for even to think wrongly is better than not to think at all." -- Hypatia of Alexandria<br>
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