<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">There are a number of traffic laws that are not always posted and vary for each administrative area. U-turns in Oregon, prima-facia speed limits in most of the US, etc. I think there should be a way of tagging the bounding polygon or boundary relation with that information to see the defaults a router should use. Nested administrative areas should work just fine too (city overrides county, county overrides state, etc.) if the road is contained within more than one administrative boundary.<div class=""><br class=""></div><div class="">I suggested this on speed limits a while back and it did not seem to be well received. But it sure would handle a lot of traffic routing and speed limit cases in the United States pretty well.</div><div class=""><br class=""></div><div class="">-Tod</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Aug 18, 2015, at 9:45 AM, Paul Johnson <<a href="mailto:baloo@ursamundi.org" class="">baloo@ursamundi.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="gmail_extra"><br class=""><div class="gmail_quote">On Tue, Aug 18, 2015 at 11:23 AM, Martijn van Exel <span dir="ltr" class=""><<a href="mailto:m@rtijn.org" target="_blank" class="">m@rtijn.org</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="">A colleague pointed out that there are areas (towns) where U turn restrictions are in place that govern all streets in that area. I wonder:</div><div class=""><br class=""></div><div class="">1) Does anyone know if this is common? I don't have any anecdotal experience.</div></blockquote><div class=""><br class=""></div><div class="">Oregon. All of it. Unless otherwise posted, U-turns are prohibited in the following conditions:</div><div class=""><br class=""></div><div class="">a) Any intersection with an electrical signal (this includes single-aspect, always-flashing signals; <a href="https://en.wikipedia.org/wiki/HAWK_beacon" class="">HAWKs</a> and half-signalized intersections (the cross street faces a stop sign and a pedestrian signal, the through street faces a traffic light; only pedestrians can trigger the traffic light)), anywhere in the state.</div><div class="">b) Any point between intersections when inside city limits.</div><div class="">c) Anytime oncoming traffic can't see you make such a turn in advance at least 500 feet ahead in the city or 1000 feet outside city limits.</div><div class=""><br class=""></div><div class="">Fine is $120 (and a mark on whatever strikeout system they have now for motorists if you're not on a bicycle, skateboard or other human powered locomotion when you do it; yes, making such a turn on a motorized wheelchair would count as a motor vehicle for this enforcement!). Yes, this means the number of places you can legally make a U-turn anywhere in the state is countable on your digits if you take your shoes off. Then ODOT just gets plain asshole with this in Beaverton, where there's signage on OR 8 at the first few signals leading west from OR 217 where there's a U TURN PERMITTED sign with a CARS ONLY supplemental placard, in which any reasonable person would assume they mean "NO TRUCKS" or other long vehicles with a wide turning radius, but Beaverton Police routinely pop bicycles and motorcycles for the move...</div><div class=""> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="">2) Is there a known tagging scheme for this? Area based traffic resctrictions?</div></blockquote></div><br class="">No, but it would be handy, because there's literally no way anybody's tagging this for every approach of every intersection with a traffic light, HAWK or half-signal in Oregon that doesn't have an explicit exception.</div></div>
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