There are definitely threads about issues with routing related to segments which shared the same endpoints. And this has nothing to do with Cartouche, as it doesn't do routing, so why is that even relevant to the discussion? The issue with the routing server has existed since the days of Cartouche. I doubt Waze will officially have much to say about it because they've never properly responded to the threads displaying the issue.
Don't forget this is also the reason why WME does not allow the starting junction to split a segment if the end junction is on the same segment. It's been built into WME since the very beginning to dissuade this type of loop from being created.
Thanks for the thread links Alan. I see there are circumstances where it looks like it could be contributing to the problems shown. So far all the examples point to the possibility this is the cause of the problems and I see where it could be, but have we seen any actual situations where a route is sometimes good and sometimes bad and then after inserting the junction it never fails again?
I am not trying to be argumentative, just fully understanding the facts.
I agree the Cartouche example made previously likely does not make sense for routing, but it was not my comment. I came into Waze after WME started, and I am not familiar with all the underlying code elements on segments that might have been set wrong with Cartouche that don't happen any more. If you say it could not affect it, I will not argue that.
As for WME preventing parallel roads, I just created two segments that connect in parallel (Test A and Test B) drawing from the endpoints of Test A with no problem. I then created another segment and then split it with a parallel segment (Test C and Test D) drawing from an endpoint of Test C and then into the middle of Test C with no problem. The only thing WME stops me from doing is creating a parallel road into the middle of a current segment requiring it to create two new junctions, not just one or none (Test E and Test F). https://www.waze.com/editor/?lon=-122.2 ... TT&env=usa
Personally it feels like the prevention of the 3rd example is more of a side effect of a problem with their interface, than being intentional if they allow the first and second example.
I saw your comment from the Waze Mapping Support Twitter Feed about loops now needing 3 segments. https://twitter.com/WazeMapping/status/ ... 2890188801
It appears Waze does indeed believe this is a problem. What I hate is that is seems solvable on their side, but they are pushing this one back to the free workers in the community to fix the problem.
I will definitely keep looking at this one and report back if I find any other new information. In the mean time maybe it is better to have everyone split the parallel road as there is minimal down side even if that is actually not making any difference to routing.