> On Oct 5, 2017, at 8:05 PM, Richie Kennedy <[email protected]> wrote: > > On Thu, Oct 5, 2017 at 5:30 PM, Martijn van Exel <[email protected]> wrote: >> >> To my mind these are highway=primary mainly because of at-grade >> intersections.. >> I am still confused about what makes a trunk road in the US. To my mind it's >> roads with >> no at-grade intersections but not built to interstate standards / not having >> an interstate >> designation... I'm not looking to open up a can of worms but I would really >> like to understand. > > If that were the case, then we'd have lots of partially controlled > access routes (i.e. no driveways, but at-grade intersections) to > change to "primary." IMHO, routes with partial control of access > should be classified as "trunk" and any highway with fully controlled > access (all cross roads are grade separated) should be classified as > "motorway," including those routes that are not quite to interstate > standards. > > On Thu, Oct 5, 2017 at 7:48 PM, Paul Johnson <[email protected]> wrote: > >> Alternatively, a single >> carriageway that is limited access, ie, no intersections, no driveways, only >> ramps (eg, Chickasaw Turnpike in Oklahoma). Essentially, almost a motorway >> but not quite there. > > I *strongly* dispute Paul's assertion that a highway that has fully > controlled access but is single carriageway should be "trunk" instead > of "motorway." Access control, not number of lanes, should be the > primary guidance behind a motorway or trunk classification.
A two lane (one lane each way, probably undivided) limited access (with interchanges) is, I believe, called a “super two” and the wiki calls for that to be tagged as trunk. [1] Not sure how long that has been in the wiki, but it has been at least a couple of years as I used that guidance in tagging a “super two” in the Sierra Nevada foothills several years ago. [1] https://wiki.openstreetmap.org/wiki/United_States_roads_tagging#Trunk_tag _______________________________________________ Talk-us mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-us
