Operation of signalized diamond interchanges with frontage roads using dynamic reversible lane control

摘要

Signalized diamond interchanges (SDI), connecting major highways and surface streets in urbanand suburban areas, are probably the most widely used interchange patterns. The limited storagespace between the two closely joined intersections coupled with heavy traffic volumes mayeasily oversaturate the facility and cause spillback problems, especially with the presence offrontage roads. This paper presents an innovative design and operational model for SDI bydynamically reversing certain lanes in the internal link on a regular basis with the deployment ofoverhead reversible lane control signs. A Binary-Mixed-Integer-Linear-Program (BMILP) isformulated to simultaneously optimize lane markings, dynamic usage of the reversible lane, andsignal timings for the new SDI system. Results from extensive numerical analyses reveal thepromising property of the proposed design and operational model in expanding capacity andreducing congestion at the SDI with frontage roads.