Hi all,
A discussion started recently on the Canada unlock forum as to best practice in terms of placing the junction node of an exit ramp. The wiki guidance on the Interchange page recommends placing the first geometry node of the ramp segment level with where the solid line starts at an exit i.e. at the last legal decision point to take the exit, and to put the junction node itself prior to this point such as to make a 10 - 15 deg angle with the roadway.
https://wiki.waze.com/wiki/Junction_Sty ... complexity
As (at least in Canada) it seems that in practice there is a wide range of configurations employed for ramp geometries and the wiki guidance is clearly not being followed in any consistent way, I raised the issue with my local champ mentor, who in turn raised it with the Canadian and US champs and routing experts.
I gather that the discussion is still ongoing, but it seems that the emerging consensus is that this may not in fact be the recommended guidance; rather, it seems that it should be the junction node itself that be placed at the last legal decision point, not the first geometry node of the ramp segment.
If they arrive at a full consensus on this, I suspect it will be brought to the wiki community's attention via other channels, but I thought I would raise the issue here to allow for any discussion that may be deemed appropriate.
Cheers
codgerd
A discussion started recently on the Canada unlock forum as to best practice in terms of placing the junction node of an exit ramp. The wiki guidance on the Interchange page recommends placing the first geometry node of the ramp segment level with where the solid line starts at an exit i.e. at the last legal decision point to take the exit, and to put the junction node itself prior to this point such as to make a 10 - 15 deg angle with the roadway.
https://wiki.waze.com/wiki/Junction_Sty ... complexity
As (at least in Canada) it seems that in practice there is a wide range of configurations employed for ramp geometries and the wiki guidance is clearly not being followed in any consistent way, I raised the issue with my local champ mentor, who in turn raised it with the Canadian and US champs and routing experts.
I gather that the discussion is still ongoing, but it seems that the emerging consensus is that this may not in fact be the recommended guidance; rather, it seems that it should be the junction node itself that be placed at the last legal decision point, not the first geometry node of the ramp segment.
If they arrive at a full consensus on this, I suspect it will be brought to the wiki community's attention via other channels, but I thought I would raise the issue here to allow for any discussion that may be deemed appropriate.
Cheers
codgerd
Re: [Page Update] Junction Style Guide