Improving urban intersection safety insights from simulation analysis

IF 3.2 Q3 TRANSPORTATION IATSS Research Pub Date : 2024-11-06 DOI:10.1016/j.iatssr.2024.10.005
Chaiwat Yaibok , Piyapong Suwanno , Thaksakorn Pornbunyanon , Chollada Kanjanakul , Paramet Luathep , Atsushi Fukuda
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Abstract

This research explores enhancing intersection safety, a critical aspect of urban traffic management, by analyzing the effects of infrastructure modifications and understanding driver behavior. Centered on a critical junction near Sichon Municipality, the study evaluates three proposed redesign scenarios using the VISSIM simulation tool and the Safety Surrogate Assessment Model (SSAM). These scenarios include the implementation of a roundabout with guidance feature (Model 2), the introduction of a dumbbell-shaped roundabout (Model 3), and the construction of a roundabout without turning points (Model 4). Findings suggest that Models 2 and 4, which incorporate roundabouts, can reduce conflict points, potentially decreasing traffic collisions. However, these models also indicate possible increases in travel times and queue lengths, highlighting the trade-offs between enhancing safety and maintaining traffic efficiency. An in-depth analysis of Deltas (ΔS) values through Optimized Hot Spot Analysis reveals areas with high and low collision severity, providing direction for targeted safety measures. The study demonstrates the complex effects of intersection redesigns on safety and traffic flow. For instance, Model 3 shows increased conflict points, emphasizing the need for specific design considerations to counteract potential negative impacts. Conversely, Model 4 achieves streamlined traffic flow but necessitates careful design to prevent new safety risks. This research underscores the need for a comprehensive approach to intersection safety that combines infrastructure improvements with insights into driver behavior. By utilizing advanced simulation tools and analyzing driving behavior, the study contributes valuable insights towards designing and assessing traffic safety interventions, aiming for safer and more efficient urban traffic environments.
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模拟分析对改善城市交叉口安全的启示
本研究通过分析基础设施改造的效果和了解驾驶员的行为,探讨如何提高交叉口的安全性,这是城市交通管理的一个重要方面。该研究以锡川市附近的一个重要交叉口为中心,使用 VISSIM 仿真工具和安全替代评估模型 (SSAM) 评估了三种拟议的重新设计方案。这些方案包括实施带引导功能的环形交叉路口(模型 2)、引入哑铃形环形交叉路口(模型 3)和建造不带转弯点的环形交叉路口(模型 4)。研究结果表明,模型 2 和模型 4(包含环岛)可以减少冲突点,从而有可能减少交通碰撞。然而,这些模型也表明,行车时间和车龙长度可能会增加,这突出表明了在加强安全和保持交通效率之间的权衡。通过优化热点分析对 Deltas (ΔS)值进行深入分析,揭示了碰撞严重程度高和低的区域,为有针对性的安全措施提供了方向。研究显示了交叉口重新设计对安全和交通流量的复杂影响。例如,模型 3 显示冲突点增多,强调需要考虑具体的设计因素,以抵消潜在的负面影响。相反,模型 4 实现了交通流的简化,但需要精心设计以防止出现新的安全风险。这项研究强调了采用综合方法解决交叉口安全问题的必要性,这种方法应将基础设施的改善与对驾驶员行为的深入了解结合起来。通过利用先进的模拟工具和分析驾驶行为,该研究为设计和评估交通安全干预措施提供了有价值的见解,旨在打造更安全、更高效的城市交通环境。
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来源期刊
IATSS Research
IATSS Research TRANSPORTATION-
CiteScore
6.40
自引率
6.20%
发文量
44
审稿时长
42 weeks
期刊介绍: First published in 1977 as an international journal sponsored by the International Association of Traffic and Safety Sciences, IATSS Research has contributed to the dissemination of interdisciplinary wisdom on ideal mobility, particularly in Asia. IATSS Research is an international refereed journal providing a platform for the exchange of scientific findings on transportation and safety across a wide range of academic fields, with particular emphasis on the links between scientific findings and practice in society and cultural contexts. IATSS Research welcomes submission of original research articles and reviews that satisfy the following conditions: 1.Relevant to transportation and safety, and the multiple impacts of transportation systems on security, human health, and the environment. 2.Contains important policy and practical implications based on scientific evidence in the applicable academic field. In addition to welcoming general submissions, IATSS Research occasionally plans and publishes special feature sections and special issues composed of invited articles addressing specific topics.
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