If we just add lane information to http://wiki.openstreetmap.org/wiki/Relation:destination_sign can we make it work?
/Martin > Date: Wed, 19 Aug 2009 09:55:01 +0100 (BST) > From: Steve Hill <[email protected]> > Subject: Re: [OSM-talk] Lane turn restrictions > To: Yann Coupin <[email protected]> > Cc: [email protected] > Message-ID: > <[email protected]> > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > On Wed, 19 Aug 2009, Yann Coupin wrote: > >> I once started a proposition to do just that but it didn't get much traction, >> feel free to discuss it. >> >> http://wiki.openstreetmap.org/wiki/Proposed_features/Relation:type%3Droute_instruction > > I've not read the discussion page yet, but some initial thoughts: > > Your first examples aren't topologically identical - the first is a 2 lane > road with a short 3 lane section followed by a right hand turn whilst the > second is a 3 lane road with a right hand turn immediately followed by > dropping down to 2 lanes. Of course, this doesn't give you enough detail > to know what lane you've got to be in (although you could make some > educated guesses). > > I also don't see the need for phonetics to be tagged (in fact, it seems > harmful because it breaks multi-language support). We don't know what > kind of display device is going to be used (whether it be on-screen > instructions, text to speech, etc.) and it should be up to the software to > decide how to present it to the user rather than being explicitly tagged > like that. > > Overall, the proposal seems a bit too complex - I had envisaged a > simpler system whereby you could set a relation similar to a turn > restriction, such as: > TAGs: > type: lane_restriction > lanes: 1,2 > Members: > from: <way the user is driving along> > to: <way the user wants to turn onto> > via: <junction node> > Whereby that marks a restriction that lanes 1 and 2 (the left two lanes, > in the case of the UK) cannot be used in a route using the <from>, <to> > and <via> members. > > It would actually be nicer to be able to tag which lanes are allowed > rather than which are disallowed, but that would be inconsistent with the > existing turn restrictions (maybe that isn't a problem? comments?) _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
