@article{ART003338932},
author={Han Byeol Yoo and Hyunchul Ahn},
title={Simulating Pedestrian Risk in Dense Urban Networks: Bottlenecks, Flow Interactions, and Intersections},
journal={Journal of The Korea Society of Computer and Information},
issn={1598-849X},
year={2026},
volume={31},
number={5},
pages={241-250}
TY - JOUR
AU - Han Byeol Yoo
AU - Hyunchul Ahn
TI - Simulating Pedestrian Risk in Dense Urban Networks: Bottlenecks, Flow Interactions, and Intersections
JO - Journal of The Korea Society of Computer and Information
PY - 2026
VL - 31
IS - 5
PB - The Korean Society Of Computer And Information
SP - 241
EP - 250
SN - 1598-849X
AB - This study presents a Python-based simulation design to assess pedestrian crowd-density risks in Seoul’s high-density roads and alleyways using the Social Force Model (SFM). Twenty-four scenarios were constructed across three spatial typologies: bidirectional corridors, T-intersections, and X-intersections. The scenarios varied by flow volume, obstacle placement, and stopping probability. Risk was evaluated using five indicators: collisions, near-miss events, mean walking speed, blocked ratio, and queue pressure, integrated into a Composite Risk Index (RI). Each scenario was repeated with five independent random seeds for robustness. Results show that T-intersections produced the highest risk, with T08 recording RI = 0.834 ± 0.122, followed by T04. X-intersections showed the greatest variability, while obstacles in corridors increased collisions more sharply than blockage.
KW - Pedestrian crowd simulation;Crowd density risk;Social Force Model (SFM);Urban alleyway safety;Intersection congestion;Composite Risk Index;Queue pressure
DO -
UR -
ER -
Han Byeol Yoo and Hyunchul Ahn. (2026). Simulating Pedestrian Risk in Dense Urban Networks: Bottlenecks, Flow Interactions, and Intersections. Journal of The Korea Society of Computer and Information, 31(5), 241-250.
Han Byeol Yoo and Hyunchul Ahn. 2026, "Simulating Pedestrian Risk in Dense Urban Networks: Bottlenecks, Flow Interactions, and Intersections", Journal of The Korea Society of Computer and Information, vol.31, no.5 pp.241-250.
Han Byeol Yoo, Hyunchul Ahn "Simulating Pedestrian Risk in Dense Urban Networks: Bottlenecks, Flow Interactions, and Intersections" Journal of The Korea Society of Computer and Information 31.5 pp.241-250 (2026) : 241.
Han Byeol Yoo, Hyunchul Ahn. Simulating Pedestrian Risk in Dense Urban Networks: Bottlenecks, Flow Interactions, and Intersections. 2026; 31(5), 241-250.
Han Byeol Yoo and Hyunchul Ahn. "Simulating Pedestrian Risk in Dense Urban Networks: Bottlenecks, Flow Interactions, and Intersections" Journal of The Korea Society of Computer and Information 31, no.5 (2026) : 241-250.
Han Byeol Yoo; Hyunchul Ahn. Simulating Pedestrian Risk in Dense Urban Networks: Bottlenecks, Flow Interactions, and Intersections. Journal of The Korea Society of Computer and Information, 31(5), 241-250.
Han Byeol Yoo; Hyunchul Ahn. Simulating Pedestrian Risk in Dense Urban Networks: Bottlenecks, Flow Interactions, and Intersections. Journal of The Korea Society of Computer and Information. 2026; 31(5) 241-250.
Han Byeol Yoo, Hyunchul Ahn. Simulating Pedestrian Risk in Dense Urban Networks: Bottlenecks, Flow Interactions, and Intersections. 2026; 31(5), 241-250.
Han Byeol Yoo and Hyunchul Ahn. "Simulating Pedestrian Risk in Dense Urban Networks: Bottlenecks, Flow Interactions, and Intersections" Journal of The Korea Society of Computer and Information 31, no.5 (2026) : 241-250.
