The placing of your roads is important in City Skyline. You need to pay attention to the direction of the road when you’re dealing with 1 way roads AND highways. If you cut off a secion of the road with the intention of expanding, putting in a round about or intersection, you need to make sure that you’re clicking in the right direction. Roads that flow to the left need to start at the right and end up to the left (flowing to the right) and vice versa.