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The way this intersection is currently set up allows the navigation to direct drivers straight across Roberts Road using Norfolk rd, this is illegal travelling in either direction across Roberts road.
There are two possible solutions to this as I see it.
A)Messy - Swap over the cross streets so that you can eliminate the right turn immediate left turn scenario which has been reported in a UR. However this will look messy on the map.
B) Clean - Streamline Norfolk Rd into a single road, adding a junction box disallowing navigation straight through the intersection when entering from Norfolk Rd.
I’ve implemented the first part of option B because it removes some unnecessary ugliness that would only make things harder, not easier. Unfortunately, I’m not ranked high enough to add junction boxes.
The third option is
C) Undivide Roberts Rd following the approved protocol, then setting the correct turn restrictions becomes trivially easy. (Tedious to do correctly, but causes the fewest issues once completed.)
In the absence of any other suggestions, I’ve undivided part of Roberts Road. I think all the turn restrictions are set correctly but if anyone could double-check, that’d be appreciated.
That solves the problem. Cheers