I had a look at all the Iranian territory , and I found a big mess of roads edited with imprecision without due attention that needs a proper road navigation.
I take this opportunity to call attention to all those wishing to contribute to want to make a good road network in this country.
1 ) Edit the streets paying attention to the joints, make sure that the roads are effectively linked and clipped the right directions;
2 ) Check carefully all the directions of traffic intersections, interchanges, ramps and exit, etc ...;
3 ) Assign, if possible, the right road type, direction and elevation, just by entering the name in English followed by the Persian language .
I will stop here because there is so much to say, we begin to step.
At the bottom of this post you will find two links that will help you appoint in an exact way the most important streets.
For any clarification please contact me via PM .
Good luck to everyone ... including me.