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Evaluating the effectiveness of engineering countermeasures at yellow dilemma zone: a driving simulator-based study 评估黄色两难区工程对策的有效性:基于驾驶模拟器的研究
IF 3.3 3区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-01-02 DOI: 10.1080/19427867.2024.2321399
Bharat Kumar Pathivada , Vedagiri Perumal
The indecisiveness of drivers at the yellow onset creates a dilemma zone (DZ) upstream of the signalized crossings. The yellow light dilemma negatively influences intersection safety, often leading to rear-end and right-angle collisions. This study explores the impact of upstream road marking and active in-vehicle warnings designed based on DZ boundaries. The prototype concepts of in-vehicle warning systems and upstream road marking were designed and implemented in the driving simulator environment. The driver responses from the experimental setup were captured to evaluate the effectiveness of the designed DZ countermeasures. Study results indicate that implemented DZ countermeasures (i.e. DZ road marking, in-vehicle display warning, and in-vehicle audio warning) significantly decreased the drivers’ crossing probability, resulting in a shorter dilemma zone. However, the proposed countermeasures did not show any improvement in the drivers’ red-light running (RLR) behavior. The driving simulator study showed promising results in reducing aggressive crossing responses at the yellow onset.
驾驶员在黄灯亮起时的犹豫不决会在信号灯路口上游形成一个两难区(DZ)。黄灯困境对交叉路口的安全产生了负面影响,往往会导致...
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引用次数: 0
Cooperative vehicle-infrastructure warning (CVIW) applications: people’s willingness to pay and perceived importance 车辆-基础设施协同预警(CVIW)应用:人们的支付意愿和认知重要性
IF 3.3 3区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-01-02 DOI: 10.1080/19427867.2024.2319998
Guanqun Wang , Zhigang Xu , Yizhe Cao , Siming Zhai , Peng Liu
Cooperative vehicle-infrastructure warning (CVIW) applications have great potential to relieve traffic congestion and improve traffic safety and mobility. To understand their public acceptance, we investigated Chinese drivers’ (N = 427) perceived importance and willingness to pay (WTP) for 11 CVIW applications, and their potential demographic determinants. Overall, the surveyed participants felt positive toward some of the involved CVIW applications. Among them, 32.6% (long downhill warning) to 79.2% (emergency brake warning) judged the CVIW applications as (very) important. “Emergency brake warning” application had the highest WTP, and “traffic jam warning” application had the lowest WTP. After negative binomial-logit hurdle regression analysis, we find that (1) perceived importance is a positive predictor of WTP; (2) driving mileage and driving experience impact WTP for most of the involved CVIW applications; (3) gender is not a significant factor on WTP. Our results can provide practical insights into predicting CVIW applications deployment and valuing them.
车辆-基础设施协同预警(CVIW)应用在缓解交通拥堵、改善交通安全和流动性方面具有巨大潜力。为了解其公众接受度,我们 ...
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引用次数: 0
Who does new trips and why?: An analysis toward the modeling of induced demand 谁会进行新的旅行,为什么?
IF 3.3 3区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-01-02 DOI: 10.1080/19427867.2024.2333647
Vasiliki Kalliga , Santhanakrishnan Narayanan , Constantinos Antoniou
Improvements in infrastructure capacity and travel conditions including the introduction of a new transport mode can induce changes in traffic. Although this can occur through a variety of behavioral mechanisms, in this study, the main focus is on the increase of individual mobility rates – namely induced trips. A three-step methodological framework is proposed to identify and model-induced trips, along with the development of discrete choice models, which is the first step of the framework and acts as its foundation. Multinomial logit (MNL) and nested logit (NL) models are estimated, with trip frequencies as the dependent variable. Factors such as age, household type, household car ownership, the number of children and trip reason are found to be influential on the decision of making new trips. Results also suggest that shared mobility significantly paves way to new trips. The contributions from this study can support in understanding the reasons behind the generation of new trips and devise pertinent policies.
基础设施容量和出行条件的改善,包括新交通模式的引入,都会引起交通量的变化。虽然这可能通过各种行为发生......
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引用次数: 0
Effectiveness of unconventional anti-texting messages displayed on dynamic message signs 动态信息标志上显示的非常规反文字信息的效果
IF 3.3 3区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-11-25 DOI: 10.1080/19427867.2024.2313291
Irtiza Rafid Khan , Kirti Mahajan , Vishal C. Kummetha , Steven D. Schrock , Alexandra Kondyli
Dynamic message signs (DMS) are widely adopted to display traffic and safety information. This study investigated the effectiveness of behavioral safety messages, including 10 unconventional anti-texting messages used on DMS. Feedback on the usability and effectiveness of various messages was collected from 120 drivers in an online survey. The influence of ten unconventional anti-texting DMS messages on driver performance was observed using driving simulator experiments with sixty participants. 89% of the respondents reported reading the signs, while 85% thought about the relevance of displayed messages. During the simulator experiment, drivers responded to a significantly lesser number of text messages after observing the anti-texting DMS messages, compared to the segments without any DMS. Both self-perceived opinions and driver performance metrics indicated a positive influence of displaying safety messages on DMS. Group comparisons across age and gender showed that some messages were more effective than others among specific driver groups.
动态信息标志(DMS)被广泛用于显示交通和安全信息。本研究调查了行为安全信息的有效性,包括 10 种非常规的反交通事故信息。
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引用次数: 0
Integrated Transit-Oriented Development (TOD) with suburban rail network design problem for maximizing profits 以公交为导向的综合开发(TOD)与郊区铁路网设计问题,以实现利润最大化
IF 3.3 3区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-11-25 DOI: 10.1080/19427867.2024.2304999
Xinmei Chen , Chen Dong , Siyu Tao , Qiyuan Peng , Jie Liu
Driven by the transit-oriented development (TOD) policy for rail stations, this study focuses on the network design of rapid suburban railways and the TOD zone design of corresponding suburban rail stations within metropolitan areas. A multi-level rail transit network was introduced, and the newly planned suburban rail network was considered as an expansion of the existing network to provide rapid services between urban and suburban areas. An integrated programming model was proposed to determine the physical and service routes of suburban rail network, the frequencies of each line, and the TOD plan along the selected rail stations. The integrated model is solved using the Adaptive Large Neighborhood Search (ALNS) algorithm. The effectiveness of the proposed model and methods is illustrated through numerical experiments, and several scenarios are designed for parameter analysis.
在轨道站点公交导向发展(TOD)政策的推动下,本研究重点关注市郊快速轨道的网络设计以及相应市郊轨道的 TOD 区域设计。
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引用次数: 0
Qualitatively and quantitatively explore injury severity of light motor vehicle drivers involved in heavy goods vehicle crashes 定性和定量研究轻型汽车驾驶员在重型货车碰撞事故中受伤的严重程度
IF 3.3 3区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-11-25 DOI: 10.1080/19427867.2024.2306009
Fulu Wei , Peixiang Xu , Yongqing Guo , Zhenyu Wang
Crashes involving heavy goods trucks (HGVs) are of significant concern as it poses a higher risk of fatality to light motor vehicles (LMVs). The study constructs three Deep Forest models with different Cascade structures to explore the relationship between HGV-LMV crash severity and risk factors. Based on the HGV-LMV crash data in Shandong province, China, motorcycles, electric vehicles, and sedans are defined as the LMV. According to the comparison results, the Deep Forest with Cascade LightGBM is significantly better. Through model interpretability tools, the study found that motorcycle and electric vehicle drivers aged 58 to 86, and LMV drivers with 1 to 3 years of driving experience are more likely suffering severity and fatal injury (SFI) in HGV-LMV crashes. And, disobey traffic sign, illegal turning, overtaking, changing lane, and crashes happened on non-motorway, national and provincial roads have an positive effect on SFI.  
涉及重型载货卡车(HGV)的碰撞事故引起了人们的极大关注,因为它对轻型机动车(LMV)构成了更高的死亡风险。本研究构建了三个深林模型,这些模型具有不同的...
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引用次数: 0
Studying the predictability of crash risk caused by manual takeover of autonomous vehicles in mixed traffic flow 研究混合交通流中人工接管自动驾驶汽车碰撞风险的可预测性
IF 3.3 3区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-11-25 DOI: 10.1080/19427867.2023.2279807
Qingchao Liu , Ruohan Yu , Yingfeng Cai , Long Chen
This study explores how to reduce the cost of prediction as much as possible while ensuring the prediction accuracy of a real-time crash risk model. The extreme gradient enhancement (XGBoost) algorithm was used to predict the crash risk of autonomous vehicles in different sections of highway. The results show that the prediction performance of the model is the best when the threshold value is 0.05. Choosing two variables to predict can ensure high accuracy and simultaneously reduce the cost of prediction when the accuracy of crash risk prediction of the three sections can reach 73%, 62%, and 70%. However, when only one variable can be selected due to sensor or system failure, the speed difference between the takeover car and the front car can be chosen to achieve the greatest benefit. These findings could provide a reference for technicians to design safer and more economical autonomous vehicles.
本研究探讨如何在保证实时碰撞风险模型预测精度的同时,尽可能降低预测成本。采用极限梯度增强(XGBoost)算法对自动驾驶汽车在不同路段的碰撞风险进行预测。结果表明,当阈值为0.05时,模型的预测性能最好。当三个路段的碰撞风险预测精度分别达到73%、62%和70%时,选择两个变量进行预测可以保证较高的预测精度,同时降低预测成本。但是,当由于传感器或系统故障只能选择一个变量时,可以选择接管车与前车的速度差,以实现最大的效益。这些发现可以为技术人员设计更安全、更经济的自动驾驶汽车提供参考。
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引用次数: 0
GNN-based passenger request prediction 基于 GNN 的乘客请求预测
IF 3.3 3区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-11-25 DOI: 10.1080/19427867.2023.2283949
Aqsa Ashraf Makhdomi , Iqra Altaf Gillani
Passenger request prediction is essential for operations planning, control, and management in ride-hailing platforms. While the demand prediction problem has been studied extensively, the Origin-Destination (OD) flow prediction of passengers has received less attention from the research community. This paper develops a Graph Neural Network (GNN) framework along with the Attention Mechanism to predict the OD flow of passengers. The proposed framework exploits various linear and non-linear dependencies that arise among requests originating from different locations and captures the repetition pattern and the contextual data of that place. Moreover, the optimal size of the grid cell that covers the road network and preserves the complexity and accuracy of the model is determined. Extensive simulations are conducted to examine the characteristics of our proposed approach and its various components. The results show the superior performance of our proposed model compared to the existing baselines.
乘客需求预测对于打车平台的运营规划、控制和管理至关重要。虽然需求预测问题已被广泛研究,但 "起源-目的地"(Origin-De...
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引用次数: 0
Exploring differences in injury severity between occupant groups involved in fatal rear-end crashes: a correlated random parameter logit model with mean heterogeneity 探索致命追尾碰撞事故中不同乘员组别受伤严重程度的差异:具有均值异质性的相关随机参数 logit 模型
IF 3.3 3区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-11-25 DOI: 10.1080/19427867.2023.2292859
Renteng Yuan , Xin Gu , Zhipeng Peng , Qiaojun Xiang
Rear-end crashes are one of the most common crash types. Passenger cars involved in rear-end crashes frequently produce severe outcomes. However, no study investigated the differences in the injury severity of occupant groups when cars are involved as following and leading vehicles in rear-end crashes. Therefore, the focus of this investigation is to compare the key factors affecting the injury severity between the front- and rear-car occupant groups in rear-end crashes. First, data is extracted from the Fatality Analysis Reporting System (FARS) for two types of rear-end crashes, including passenger cars as rear-end and rear-ended vehicles. Significant injury severity difference between front- and rear-car occupant groups is found by conducting likelihood ratio test. Moreover, the front- and rear-car occupant groups are modeled by the correlated random parameter logit model with heterogeneity in means (CRPLHM) and the random parameter logit model with heterogeneity in means (RPLHM), respectively. This study provides an insightful knowledge of mechanism of occupant injury severity in rear-end crashes.
追尾事故是最常见的事故类型之一。发生追尾事故的乘用车经常会产生严重的后果。然而,没有研究调查损伤的差异……
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引用次数: 0
A review of bike volume prediction studies 自行车容量预测研究综述
IF 3.3 3区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-11-25 DOI: 10.1080/19427867.2024.2310831
Md Mintu Miah , Kate Kyung Hyun , Stephen P Mattingly
No previous research provided a comprehensive review of the bicycle volume estimation techniques assessing the current research gaps in data and modeling makes it challenging to understand the most effective and accurate strategies to estimate bicycle volumes. This article provides a detailed review of 58 studies published from 1996 to 2021. The review results indicate that conventional modeling approaches such as Linear regression, Negative Binomial, Poisson regressions, and a factor-up method represent the most popular econometric statistical models for bicycle volume estimation, while a decision tree is popular among machine-learning-based techniques due to its simplicity and ease of application, interpretation, and estimation with small data sets. In addition, Strava data, Socio-demographic variables, and bicycle facilities significantly contribute to the predictions. The study documents the current research gaps and recommends future research directions to improve data source evaluations, variable creations, modeling, and scalability/transferability advancements.
以前的研究没有对自行车量估算技术进行全面回顾,评估数据和建模方面的现有研究缺口使得了解自行车量估算技术中最重要的技术具有挑战性。
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引用次数: 0
期刊
Transportation Letters-The International Journal of Transportation Research
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