高速道路に対しての一般道路はsurface streetsです。
http://www.youtube.com/watch?v=b22dChh9bRA 0:44 they are smart enough to avoid la's infamous freeways at rush hour, taking surface streets...
https://www.youtube.com/watch?v=2Qip9FvdOBM 0:16 ride on the street, man! おい、車道を走れよ！
https://www.youtube.com/watch?v=VbcU0gy-M7s 0:22 blasting snow off the surface road and onto vehicles
Plows Speed Down Service Road, Damage Property
参考リンク
http://bridge-english.blogspot.jp/2011/07/blog-post_2729.html 大動脈を英語でなんと言うか？
練習問題解答
a-475 surface streets
