New ideas are explored for managing multimodal traffic on isolated approaches to signalized intersections. Strategies are proposed that both: segregate distinct modes along the approach, and more effectively resolve the disruptive capacity-reducing conflicts that arise between through-moving and turning traffic traveling in adjacent lanes. The various schemes for doing this are systematically enumerated, using as a building block the simple case of an intersection approach on which two movements are in conflict;and a framework is formulated for estimating the capacities that these schemes produce. Findings are extended to more complicated intersection approaches: the case in which two distinct modes make two conflicting movements is examined; ways to apply the ideas to yet other scenarios are described; and practical issues of implementation are discussed. Analysis shows that the proposed schemes produce capacities that consistently and significantly exceed those of conventional intersection treatments, and that the new schemes can reduce travel delays for all modes at an intersection, including those that are greener and more sustainable than the automobile. The work is thus a first step toward realizing more environmentally-friendly ways of managing city traffic.
Samenvatting