Quote Originally Posted by surfarcher View Post
Right now I am thinking a light fawn/brown dotted line for the non-imperial roads and the yellow/black dashed style for the imperial roads... And am hoping it won't be too garish
Black & Yellow are the one of the highest contrast colour combinations, hence their use in things such as crash test simulations, road signs and measuring tapes.

I'd suggest, solid and outlined. Local roads would get the "outline" and Imperial Roads would get solid.