Interchange Operations on the Local Street Side: State of the Art

This Circular provides a state-of-the-art review of interchange operations. Though major knowledge gaps remain, a good deal of theoretical and practical experience does exist. Specifically, this Circular includes the following: Definitions and characteristics of service interchanges; A general search of the literature; Four papers presented at the 1992 TRB Annual Meeting conference session titled Interchange Operations on the Local Street Side; and Initial research problem statements on interchanges. This Circular highlights and defines the interchange issues based on a review of current knowledge and understanding. From this base, major new initiatives can be pursued. This document should serve as a useful source of information for those currently involved with the planning, design, construction and operation of interchanges. It also provides introductory material to the subject area.