Modelling Signal Platoon Patterns by Approach Lane use and Movement Class

Aerial photograph of road

Abstract

A lane-based signal platoon progression model has been developed for estimating performance measures as a function of signal offsets, geometric design and flow conditions. the model takes into account midblock lane changes that apply to signal platoon patterns. This particularly important in evaluating closely-spaced intersections with high demand flows where vehicles have limited opportunities for lane changes between intersections. The modelling of signal platoon patterns is further enhanced by assigning two types of movements negotiating the network to Special Movement Classes. These are the through movements at external approaches which become turning movements at downstream internal approaches, and the dogleg movements at staggered T intersections. These movements can be assigned to separate lanes and separate signal phases, and their second-by-second platoon patterns can be tracked through the network separately. A staggered T-intersection example is presented to demonstrate important aspects of modelling signal platoon patterns by approach lane use and movement class.

Reference

AKÇELIK, R. (2015). Modelling Signal Platoon Patterns by Approach Lane use and Movement Class. Presentation at the 21st International Conference on Urban transport and the Environment (URBAN TRANSPORT 2015), Valencia, Spain, Jun 2015.