01367584

Component

https://doi.org/10.3141/2316-07

http://scholar.google.com...elli&publication_year=2012

Road accident reports show that many accidents involve pedestrians, the category of road users generally considered "weak" with respect to other mobility users, and that these accidents occur at pedestrian crossings. Therefore, traffic engineers need simulation tools that can forecast the results of a given design solution and compare the solution with alternatives. A simplified model that simulates interactions between pedestrians and vehicles at road crossings is presented. In the model, the crossing process is represented as a discrete events system, and the model uses basic and easy-to-collect parameters to estimate interactions. Pedestrian behavior in the decision phase is characterized with a gap acceptance criterion, which is based on parameters derived from probabilistic distribution and takes into account the heterogeneity of the pedestrian population. Interaction between pedestrians during the crossing phase is taken into account with a cellular model of the crossing area. The model allows estimation of safety benefits for pedestrians and crossing level of service for both pedestrians and vehicular flows, starting from site geometry and field measurements of flow parameters of pedestrians and vehicles. The model was applied to a real site in a case study. The effects of traffic-calming interventions were also simulated and evaluated.

01474809

12-2552

English

pp 58–68

2012

Transportation Research Record: Journal of the Transportation Research Board

9780309263221

Print

Figures; Photos; References; Tables

Case studies; Crosswalks; Gap acceptance; Pedestrian flow; Pedestrian movement; Pedestrian safety; Pedestrian vehicle interface; Pedestrians; Traffic calming; Traffic flow; Traffic simulation

Discrete event model

Highways; Operations and Traffic Management; Pedestrians and Bicyclists; I71: Traffic Theory; I73: Traffic Control

TRIS, TRB, ATRI

Feb 8 2012 5:10PM

• Agent-Based Framework for Modeling Gap Acceptance Behavior of Drivers Turning Left at Signalized Intersections
• Calibration of Pedestrian Simulation Model for Emergency Doors by Pedestrian Type
• Development of Microscopic Traffic Simulation Model for Safety Assessment at Signalized Intersections
• Driver Anticipation in Car Following
• Driving Behavior in Emergency Situations: Psychospacing Modeling Approach
• Dynamic Simulation Assignment Model for Pedestrian Movements in Crowded Networks
• Exit Choice Decisions During Pedestrian Evacuations of Buildings
• Influence of Midblock Pedestrian Crossings on Urban Street Capacity
• Integrated Lane Change Model with Relaxation and Synchronization
• Modeling Concepts for Mixed Traffic: Steps Toward a Microscopic Simulation Tool for Shared Space Zones
• Modeling Driver, Driver Support, and Cooperative Systems with Dynamic Optimal Control
• Numerical Analysis for Adaptive Traffic Simulation
• Phase Transition Model Based on Driver Reaction Time and Sensitivity
• Safety First: Microsimulation Approach to Assessing Congestion Effects on Risk Experienced by Drivers