Influence of Conflicts Between Right-Turning Vehicles and Pedestrians on Vehicle Delays, Evaluated Using a Microsimulation Model

Canchari F.Y.Q.; Calixto R.A.T.; Chamorro P.L.M. · Smart Innovation, Systems and Technologies (2026) · DOI: 10.1007/978-3-032-24262-4_24

Resumen

The study addresses how pedestrian priority influences the delay of right turns at a high-volume signalized intersection in Lima. The objective of the work is to measure the effect and identify the time adjustments that reduce the delay. The main contribution consists of adapting and validating a microsimulation model in VISSIM 9.0, built using field data, which explicitly represents the interactions between drivers and pedestrians at crossings. The methodology evaluates twenty scenarios combining increases in traffic flow (0%, 10%, 20%, and 30%) with stepped reductions in pedestrian-priority time (0, 3, 5, 7, and 10 s). The results show how moderate adjustments to pedestrian time significantly reduce right-turn delay without eliminating pedestrian crossing. The best performance is achieved with a 10% increase in traffic flow and a 7 s reduction in pedestrian priority, resulting in a 27.06% decrease compared to the base situation. In operational terms, when traffic flow increases by 10%, it is recommended to decrease pedestrian-priority time by 7 s. Such a reduction should be activated only if pedestrian occupancy justifies it. Under those conditions, the adjustment is incorporated as a signal-timing programming criterion to reduce delays at intersections with similar characteristics. Thus, the study provides a technical basis for calibrating signal times and balancing vehicular efficiency with pedestrian level of service. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2026.

Instituciones: Universidad Peruana de Ciencias Aplicadas