Uh...
..., how wide a road you need? I mean, there is no EXZACT N SCALE ROAD Dimension. Form follows function- basic engineering concept. You make it as wide as you need.
This is a run on sentence/paragraph-
I take (2) N scale vehicles, place 'em side by side. Now, follow me here- If it's a road that is a city street, which I happen to model more often than not- I provide parking sometimes. So I place (4) vehicles side by side allowing for just a little manuevering room. That street is (4) vehicles wide plus a little space between. If it's a one way street with alternate side parking- you have to listen to the radio to know when it's in effect. When modeling bridges and tunnels, well you have me there- just make sure your toll booths are wide enough to let your hands pull the cars past the booth and push them into the hole.

I do it and so should you. Suburban streets are much wider, but not always. Heck- most suburban streets are merely paved over horse trails. You get into the country side where I am and there are stoops that are right up to the roadway- literally- put your foot out and it's gone- onna country road!!! Surrounding that house are acres of open field. If you're modeling corn fields and pastures with dirt roads- follow your nose.
If you're modeling streets that are outside you door- get a good tape measure. Report your results.
Otherwise all N Scale streets are 1.947 wide as a standard.
Here's a recent pic I made-
No one told me how wide to make the streets.
Mark
