how to set AI go stright on intersections

so i have two roads cross each other. how can i restrict AI from turning on that intersection and make it go only in stright direction?
also, how to make a road only one way direction? one way check box doesnt seem to work

 

pls help

 

One way to do this would be to add Waypoints to the road and edit a map.json file in the levels folders with a script to follow a specific path. If you search for waypoints in the forums there are some older posts that show how to do this. Also, you could look at some maps that use waypoints. (I think East Coast USA uses it and the Matrix Freeway map)

 

thank you. as someone said - it's dirty way to do this, but at least it works. i used this method with waypoints elevation a while ago, then i used road path node elevation which did the same thing, but after one of the last updates - path node elevation had no effect. i just thought may be there is more legit way to do this. question about one way direction still active tho