Before revision: At the lowest level of the hierarchy, cul-de-sac streets , by definition non-connecting, link with the next order street, a primary or secondary "collector"—either a ring road that surrounds a neighbourhood, or a curvilinear "front-to-back" path—which in turn links with the arterial.
After revision: An Oregon Guide for Reducing Street Widths | Neighborhood Street Design GuidelinesAt the lowest level of the hierarchy, cul-de-sac streets , by definition non-connecting, link with the next order street, a primary or secondary "collector"—either a ring road that surrounds a neighbourhood, or a curvilinear "front-to-back" path—which in turn links with the arterial.