The following problem if you do not have normal asphalt as a connection and the road is separated with the colored markings, he no longer recognizes this as a network, look at the picture so that you have exactly what I mean: https://i.imgur.com/aziyRin.jpeg https://i.imgur.com/FeEh3pG.jpg

Of course that's not going to work - the coloured tiles are not considered road.

Road does connect on corners, so if you put a single "Road" tile in the center of that junction then it should work.

This is really not a clever mod, I can only have a single tile be treated as "Road". If you want better then go pester Klonan for a function to set arbitrary tiles as "Road".