> ----- Original Message ----- > From: David Groom > To: Steve Bennett ; Open Street Map mailing list > Sent: Tuesday, December 01, 2009 1:33 PM > Subject: Re: [OSM-talk] Non-junctioning crossing roads > > > Yes there should be a node at the crossing. > > Most of those ways are one way , so routing software would not allow many > turns anyway. The only turn I could see being currently as valid would be > when going south on Lakeside Drive and turning right onto the northbound > carriageway. To stop this you need a turn restriction relation.
Oops. I could see a valid turn from the northbound carriage way left onto lakeside drive, so you would need a no_left turn restriction to stop that. Alternatively the whole junction restriction could be accomplished as konrad said by a couple of only_straight_on restrictions David > > http://wiki.openstreetmap.org/wiki/Relation:restriction > > Basically with Lakeside drive having role "From", the junction node having > a role "via", and the Northbound carriage way having a role "to" > > David > > > > ----- Original Message ----- > From: Steve Bennett > To: Open Street Map mailing list > Sent: Tuesday, December 01, 2009 1:14 PM > Subject: [OSM-talk] Non-junctioning crossing roads > > > Hi all, > Is it ever correct for two roads to cross physically, at the same level, > but not create a junction between them? > > The situation I have looks like: > > C > | > A-->-----+----->--B > | > v > | > D > > With apologies for ASCII art. Cars go from A to B, or from C to D, but > they can't turn. It's controlled by traffic lights. So, do I create the > junction represented by the +, or just let them cross over? If I create > the junction, how do I stop routing software trying to make turns? > > It's here if want to see it (Nearmap imagery): > http://www.openstreetmap.org/edit?lat=-37.85348&lon=144.979389&zoom=20 > > Queens Rd southbound branches to become Lakeside Drive, crosses Queens Rd > Northbound. > > Sorry for the noob question, just wanted to make sure I get this right. > > Steve > _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
