Evaluation approaches of fuel saving and carbon reduction benefits for arterial signal retiming

This paper compares three evaluation approaches of energy saving and carbon reduction benefits for arterial signal retiming, including simulation of VISSIM and IDAS software and traffic survey of intersection stop delay. A signal retiming project of 18 intersections is evaluated by these approaches. Since the simulation of VISSIM is performed by each vehicle and second, its evaluation benefits are the highest among these approaches. IDAS is a macro-scope simulation software and utilizes link average speed increase to estimate benefits with no considering of the reduction of intersection delay. Thus its benefits are the lowest. Evaluation benefits of the intersection stop delay survey are between VISSIM and IDAS results. From analysis of these results, the future application of these evaluation approaches is proposed.