Reviewing the types that you suggest here, the result seems reasonable. Major Canadian Highways are generally a blend of the two, I find. Type 1 trunks rely on restricted access and the main highways in cities are generally limited in this manner. Likewise, these restrictions lift, in a sense, outside the city where they switch to connecting major settlements together (Type 2).
That said, I think that most would agree that the TransCanada Highway is automatically a trunk route given that it is, at it's most basic point, the central connection between major settlements, especially across provincial borders. I assume that the routes that leave the TCH to go to other major settlements would need to be at the same class as the TCH, if they are multi-lane highways used to connect settlements. Or are we to designate them down a classification and leave Trunk for the TCH alone? On Thu, Jul 23, 2015 at 6:48 PM, Tristan Anderson < andersontris...@hotmail.com> wrote: > So it seems like we're coming to some agreement. The current Canadian > definition based on that 2005 document should be replaced with something > else that is consistent with the rest of the world. Once we find this new > definition, the appropriate wiki pages should be updated. > > I took a look around the world and finally saw some consistency in how > trunk tags are used. Stewart's guidelines are basically correct, but I > think I can hammer out a more specific description. There are two types of > roads with are both usually tagged highway=trunk: > > (1) Limited access highways. This is a physical description for a road > that has some of the characteristics of a motorway. They are often dual > carriageways of fairly high speed. > > (2) Highways connecting distant population centres. This is a functional > description for a road where used by cars and heavy trucks travelling long > distances or between major cities. Although usually two lanes, in more > remote areas these roads may have very light traffic, be unpaved, or be > slow. > > In some parts of the world, like Germany, France and the eastern United > States, all trunk roads are type (1) because long-distance travel is > generally done on their dense networks of motorways. > > Conversely, in large swathes of Australia and Canada, as well as in much > of the developing world, all trunk roads are type (2) because type (1) > doesn't exist. > > The only country I noticed that doesn't follow the above scheme is Britain > (actually just England and Wales), ironically the birthplace of the trunk. > The designation there is used quite liberally, including even short roads > connecting small towns and quite a few of of London's city streets. Just > look at England at zoom level 5 and observe how unusually green it is. > > I suggest using the "international" model, with types (1) and (2) above > being tagged as trunks in Canada. This won't change much as it largely > coincides with how roads are already tagged. The wiki pages can be updated > accordingly then we can look at specific roads in BC and Québec! > > Any objections? > > > > > From: jfd...@hotmail.com > > To: scr...@gmail.com; talk-ca@openstreetmap.org > > Date: Thu, 23 Jul 2015 10:08:44 -0400 > > Subject: Re: [Talk-ca] Highway recoding > > > > Thank Russel, > > Your description is pretty close of the one I had in mind (about trunks) > before I found the Canadian definition was referring to the mentioned > document. > > > > Cheers, > > > > Daniel > > > > -----Original Message----- > > From: Stewart C. Russell [mailto:scr...@gmail.com] > > Sent: July-23-15 08:44 > > To: talk-ca@openstreetmap.org > > Subject: Re: [Talk-ca] Highway recoding > > > > The definition of ‘trunk’ is a difficult one, if based on the UK > understanding. Like its unwritten constitution, trunk roads in the UK are > more on a "know it when I see it" basis. > > > > Pretty much the only definitions I can think of that would be generally > applicable are: > > > > * a trunk road goes from one city/town to another. > > > > * no parking at the side of the road. > > > > * something above the urban speed limit applies (though there are often > nasty brief exceptions, like a roughly 200m stretch of 30 mph that used to > adorn the A80, dammit). > > > > A trunk road isn't always dual carriageway. It can have traffic lights, > roundabouts or (rare, in the UK) stop signs. Depending on its age, it may > bypass towns and villages. Older trunk roads may also have all the usual > roads entering it, while newer ones are likely to have on-ramps. > > > > In summary, the UK definition is so riddled with unwritten exceptions > that trying to apply it rigorously in even one province in Canada will be > frustrating. And no matter what you do, you'll always get some rogue user > that comes along and adds their own tagging. It's a sair fecht … > > > > cheers, > > Stewart > > > > _______________________________________________ > > Talk-ca mailing list > > Talk-ca@openstreetmap.org > > https://lists.openstreetmap.org/listinfo/talk-ca > > > > > > _______________________________________________ > > Talk-ca mailing list > > Talk-ca@openstreetmap.org > > https://lists.openstreetmap.org/listinfo/talk-ca > > _______________________________________________ > Talk-ca mailing list > Talk-ca@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-ca > >
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