Re: [Talk-us] Trunk
On Thu, Oct 5, 2017 at 10:20 PM, Tod Fitch wrote: > > > On Oct 5, 2017, at 8:05 PM, Richie Kennedy > wrote: > > 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] > Limited access just means few intersections or driveways. Controlled access would be interchange exclusive. > 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. > Correct, I believe a super-2 is a good qualification to be a trunk, not a motorway. While they might have a lot of freeway-like features and offer freeway speeds, few people would typically consider them a freeway. ___ Talk-us mailing list Talk-us@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Trunk
> On Oct 5, 2017, at 8:05 PM, Richie Kennedy wrote: > > On Thu, Oct 5, 2017 at 5:30 PM, Martijn van Exel 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 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 Talk-us@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Trunk
On Thu, Oct 5, 2017 at 5:30 PM, Martijn van Exel 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 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. ___ Talk-us mailing list Talk-us@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Trunk
On Thu, Oct 5, 2017 at 5:30 PM, Martijn van Exel 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. > A motorway would be two or more carriageways, limited access (ie, no driveways and no at-grade intersections). A trunk road would either be a dual carriageway with surface intersections with cross streets, and limited or no direct driveway access (eg, OK 3 in Oklahoma County, aka Northwest Expressway). 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. ___ Talk-us mailing list Talk-us@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-us
[Talk-us] Trunk
Question for you all: What make Michigan state routes 5 and 10[1] trunks rather than primaries? 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. Martijn [1] https://www.openstreetmap.org/#map=13/42.5188/-83.3982 ___ Talk-us mailing list Talk-us@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-us
