On Thu, Jan 6, 2011 at 2:37 PM, Robert Elsenaar <robert at elsenaar.info> wrote: > RTC is the abbriviation of Regional Transportation Commission. So the amout > of money you have to pay for e.g. a bus ride. Right... http://www.openstreetmap.org/browse/way/39275890 I think it's some sort of subjective bicycle comfort level, but there's no documentation.