Network dataset dissolve problem

[MaximilienRIOT]

Hello everyone,

Basically, I need to create a route service on Arcgis. I manage to do it, however despite the fact that I put restrictions (“N”, ‘TF’, “T”) and that I determined my driving direction on the right and well, when creating a route between a point A and a point B, the route will drive on the left and take forbidden directions. I'm thinking that the problem now is that my network dataset isn't dissolved and that, because my network source isn't well connected, my route service simply can't distinguish right from left. I can't get the dissolve to work, there may be other solutions but I'm a bit stumped...

Can you help me, thank you in advance!

[LindsayRaabe_FPCWA · Accepted solution]

When you say you've set it to use right and not left, are you aware that it determines this based on the direction the line was created (and not the fact that there is a second line next to it)?

In the below example, both lines have been created from the bottom up (last vertex is the red one). In a network dataset in a field called CWY, the one of the left was attributed as "Left" and the one on the right as "Right" (and any that are bidirectional as "Single"), you would set your 'One-way' Restriction as Prohibited with the below properties:

If your data is not created consistently in terms of direction, you won't be able to setup the restrictions properly. If it is already setup with the direction of the lines running in the correct direction for the roads (e.g. the below) then you can implement a simpler restriction based on just the "Single" value (no right or left needed).