Ok, different question. now that i can work with the tool 
I’m working mostly in the city system. I’m wondering how can I make smaller roads. I’ve made my base road 2 lanes wide, and I’m thinking of going to 4 laes. however, 2 or 4, how can I do smaller roads.
Say for example I want to do major road ways at 4 lanes, and then city core being 2 lanes, with some back alleys being 1 lane.