Influence of Pedestrian Crossings on Speed Characteristics and Capacity of a Roundabout

Abstract

This study examines the impact of pedestrian crossings on roundabout speed characteristics and capacity, with a focus on optimizing traffic flow. Pedestrians traditionally have priority at unsignalized intersections and roundabouts, significantly influencing operational efficiency. The paper emphasizes the critical role of crosswalk placement in minimizing disruptions to vehicular flow and avoiding congestion.

Data for this research were collected from roundabouts in Marrakech, Morocco, utilizing mobile phones to measure vehicle and pedestrian numbers, along with passage times. Complementing field data, Vissim simulations were employed for enhanced accuracy. Our study specifically analyzes the influence of pedestrians on roundabout exit lane capacity.

The key objective is to determine the optimal distance between roundabouts and crosswalks to maximize capacity. Findings offer valuable insights for urban planning and traffic management, addressing the dynamic interplay between pedestrian flow, crosswalk positioning, and overall roundabout efficiency.