Transportmetrica A-Transport Science最新文献_第2页

Extension of a static into a semi-dynamic traffic assignment model with strict capacity constraints 将具有严格容量约束的静态交通分配模型扩展为半动态交通分配模型

IF 3.6 2区工程技术

Transportmetrica A-Transport Science Pub Date : 2025-05-04 DOI: 10.1080/23249935.2023.2249118

Luuk Brederode , Lotte Gerards , Luc Wismans , Adam Pel , Serge Hoogendoorn

引用次数: 0

Multi-period emergency vehicle fleet redistribution and dispatching 多时段应急车队再分配调度

IF 3.6 2区工程技术

Transportmetrica A-Transport Science Pub Date : 2025-05-04 DOI: 10.1080/23249935.2023.2243344

Zheyi Tan , Lu Zhen , Zhiyuan Yang , Lilan Liu , Tianyi Fan

引用次数: 0

Optimal vehicle capacity and dispatching policy considering crowding in public bus transit services 考虑拥挤的公交系统最优车辆容量与调度策略

IF 3.6 2区工程技术

Transportmetrica A-Transport Science Pub Date : 2025-05-04 DOI: 10.1080/23249935.2023.2258996

Reza Mahmoudi , Saeid Saidi , S. C. Wirasinghe

{"title":"Optimal vehicle capacity and dispatching policy considering crowding in public bus transit services","authors":"Reza Mahmoudi , Saeid Saidi , S. C. Wirasinghe","doi":"10.1080/23249935.2023.2258996","DOIUrl":"10.1080/23249935.2023.2258996","url":null,"abstract":"<div><div>This study investigates the often overlooked impact of on-board crowding on operational and user costs in public transit systems, specifically within a many-to-many bus transit line with varying demand patterns. While previous research has used mathematical programming for similar problems, this paper employs analytical approaches to offer deeper insights and address fundamental questions. First, we propose an approach to determine optimal bus capacities, factoring in in-vehicle crowding costs, assuming a fixed headway. Second, we explore the optimal dispatching policy for buses with fixed capacities, considering crowding costs. Third, we optimize both headway and vehicle capacity simultaneously. Our findings reveal that optimal vehicle capacity correlates with average passenger trip length and the square root of crowding-discomfort costs, especially when crowding increases linearly with load factor. When both headway and capacity are variable, smaller vehicles with shorter headways are favored, particularly in moderate-demand scenarios, especially with cost-effective staff models like autonomous fleets.</div></div>","PeriodicalId":48871,"journal":{"name":"Transportmetrica A-Transport Science","volume":"21 2","pages":"Pages 1-25"},"PeriodicalIF":3.6,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136235685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integration of ridesharing and activity travel pattern generation 拼车与活动出行模式生成的整合

IF 3.6 2区工程技术

Transportmetrica A-Transport Science Pub Date : 2025-05-04 DOI: 10.1080/23249935.2023.2241570

Ali Najmi , Travis Waller , Wei Liu , Taha H. Rashidi

{"title":"Integration of ridesharing and activity travel pattern generation","authors":"Ali Najmi , Travis Waller , Wei Liu , Taha H. Rashidi","doi":"10.1080/23249935.2023.2241570","DOIUrl":"10.1080/23249935.2023.2241570","url":null,"abstract":"<div><div>This paper proposes a mobility system serving as an innovative platform that synchronises a ridesharing model and an Activity Travel Pattern (ATP) generator, enabling a synergistic enhancement of participants’ mobility experiences. Through system-level integration, it can significantly improve the performance of ridesharing systems while also exploring the intricate relationship between ridesharing and participants’ ATPs. Numerical examples demonstrate the advantages of ridesharing systems when armed with flexible/variable announcements from the ATPs-based participants. The results show that incorporating ATP-based announcements in the system increases the chances of finding a match, and the attractiveness of the ridesharing mode for participants is improved. Despite their lower number, ATP-based participants contribute significantly to finding matches and obtaining distance savings. The study also highlights the key role of tour gyration in the performance of the ridesharing system. It incentivises participants with distant activity locations to join the ridesharing system as ATP-based participants.</div></div>","PeriodicalId":48871,"journal":{"name":"Transportmetrica A-Transport Science","volume":"21 2","pages":"Pages 1-34"},"PeriodicalIF":3.6,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43106740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A toll-based approach for regulating hazmat transportation network considering boundedly rational route choice 考虑有界理性路径选择的危险品运输网络收费调控方法

IF 3.6 2区工程技术

Transportmetrica A-Transport Science Pub Date : 2025-05-04 DOI: 10.1080/23249935.2023.2259010

Honggang Zhang , Wei Wang , Zhiyuan Liu

引用次数: 0

Variable speed limit modelling to improve traffic safety and efficiency of mixed traffic flow by a two-stage framework 通过两阶段框架建立可变限速模型以提高混合交通流的交通安全和效率

IF 3.6 2区工程技术

Transportmetrica A-Transport Science Pub Date : 2025-05-04 DOI: 10.1080/23249935.2023.2253476

Jieling Jin , Helai Huang , Ye Li , Gongquan Zhang , Yuxuan Dong , Bo Zhou , Hongli Xue

{"title":"Variable speed limit modelling to improve traffic safety and efficiency of mixed traffic flow by a two-stage framework","authors":"Jieling Jin , Helai Huang , Ye Li , Gongquan Zhang , Yuxuan Dong , Bo Zhou , Hongli Xue","doi":"10.1080/23249935.2023.2253476","DOIUrl":"10.1080/23249935.2023.2253476","url":null,"abstract":"<div><div>A two-stage variable speed limits (VSL) modelling framework is proposed to enhance traffic safety and efficiency at freeway bottlenecks with mixed traffic flow comprising both human-driven and autonomous vehicles. The first-stage macroscopic VSL control framework is based on an extended cell transmission model (ECTM) and a VSL optimal control model. The ECTM serves as a traffic state predictor and characterises mixed traffic flow by modelling various characteristics such as driving behaviours and flow performance. The ECTM-based optimal control model aims to improve safety and efficiency. The second-stage microscopic validation framework is designed using the VISSIM_COM to validate the effectiveness and sophistication of the proposed VSL strategy. The proposed strategy is compared with a fixed speed limit strategy (FSL) and a VSL strategy considering only efficiency improvement (VSL_E). The results demonstrate that the proposed strategy improves traffic efficiency compared to the FSL and significantly outperforms VSL_E in traffic safety.</div></div>","PeriodicalId":48871,"journal":{"name":"Transportmetrica A-Transport Science","volume":"21 2","pages":"Pages 1-25"},"PeriodicalIF":3.6,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42616246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing transportation network redundancy by integrating route diversity and spare capacity 综合航线多样性和备用容量评估交通网络冗余

IF 3.6 2区工程技术

Transportmetrica A-Transport Science Pub Date : 2025-05-04 DOI: 10.1080/23249935.2023.2266508

Zijian Wang , Xiangdong Xu , Yuchuan Du

引用次数: 0

Benchmarking the performance of urban rail transit systems: a machine learning application 对城市轨道交通系统的性能进行基准测试：一个机器学习应用

IF 3.6 2区工程技术

Transportmetrica A-Transport Science Pub Date : 2025-01-02 DOI: 10.1080/23249935.2023.2241566

Farah A. Awad , Daniel J. Graham , Laila AitBihiOuali , Ramandeep Singh , Alexander Barron

{"title":"Benchmarking the performance of urban rail transit systems: a machine learning application","authors":"Farah A. Awad , Daniel J. Graham , Laila AitBihiOuali , Ramandeep Singh , Alexander Barron","doi":"10.1080/23249935.2023.2241566","DOIUrl":"10.1080/23249935.2023.2241566","url":null,"abstract":"<div><div>Urban rail transit (URT) systems operate in heterogenous environments where their performance is affected by many exogenous factors. However, conventional benchmarking methods assume homogeneity of many of these factors which could result in misleading comparisons of performance. This study provides a methodological contribution to the transit benchmarking literature through a systemic data-driven method which accommodates heterogeneity among URT. A unique international dataset of 36 URT systems in year 2016 is utilised. Operators are clustered based on indicators of operational performance through machine learning algorithms which enables like-for-like comparisons of performances. Data envelopment analysis with bootstrapping is then used to evaluate operators’ efficiency performance within a cluster. Further, ANOVA and post-hoc tests are applied to explore variations and correlations among different aspects of performance. Our clustering results corroborate the natural geographic grouping of the systems. Further, we highlight the complexity of the definition of service quality in the transit sector.</div></div>","PeriodicalId":48871,"journal":{"name":"Transportmetrica A-Transport Science","volume":"21 1","pages":"Pages 466-498"},"PeriodicalIF":3.6,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59991244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Key factors affecting motorcycle-barrier crash severity: an innovative cluster-regression technique 影响摩托车护栏碰撞严重程度的关键因素：一种创新的聚类回归技术

IF 3.6 2区工程技术

Transportmetrica A-Transport Science Pub Date : 2025-01-02 DOI: 10.1080/23249935.2023.2230310

Reuben Tamakloe , Subasish Das , Emmanuel Kofi Adanu , Dongjoo Park

{"title":"Key factors affecting motorcycle-barrier crash severity: an innovative cluster-regression technique","authors":"Reuben Tamakloe , Subasish Das , Emmanuel Kofi Adanu , Dongjoo Park","doi":"10.1080/23249935.2023.2230310","DOIUrl":"10.1080/23249935.2023.2230310","url":null,"abstract":"<div><div>Highway motorcycle-barrier crashes are uncommon but are associated with severe ramifications. Little has been done to understand the factors related to these crashes, making it difficult to establish appropriate mitigation policies. This study identifies homogeneous groups of motorcycle-barrier crashes on highways and investigates cluster-specific key factor associations and the determinants of injury severity. Cluster Correspondence Analysis was employed to discover latent clusters and cluster-specific key factor associations using motorcycle-barrier crashes from Massachusetts. Further, an ordered probit regression technique was employed to investigate the effect of factors on injury severity outcomes at the cluster level. Three highway access control type-related clusters were identified. While seniors, collectors, intersections/roundabouts, daylight, and summer were associated with no/partial access-controlled segment crashes, interstates, ramps, medians, dark-lighted roads, and winter correlated with full access-controlled segment crashes. Factors influencing fatalities differed for each cluster. From the insightful findings, targeted countermeasures geared at improving motorcycle safety are suggested.</div></div>","PeriodicalId":48871,"journal":{"name":"Transportmetrica A-Transport Science","volume":"21 1","pages":"Pages 175-199"},"PeriodicalIF":3.6,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46793946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of stochastic link capacity and link performance function including uncertainty of driver’s behaviour 随机路段容量估计及包含驾驶员行为不确定性的路段性能函数

IF 3.6 2区工程技术

Transportmetrica A-Transport Science Pub Date : 2025-01-02 DOI: 10.1080/23249935.2023.2218943

Teppei Kato , Kenetsu Uchida , Ryuichi Tani , Kazunori Munehiro

{"title":"Estimation of stochastic link capacity and link performance function including uncertainty of driver’s behaviour","authors":"Teppei Kato , Kenetsu Uchida , Ryuichi Tani , Kazunori Munehiro","doi":"10.1080/23249935.2023.2218943","DOIUrl":"10.1080/23249935.2023.2218943","url":null,"abstract":"<div><div>Recently, user equilibrium models with uncertainty were proposed to describe stochastic travel time in road networks. The accurate estimation of a stochastic link capacity is important for such models. This study develops a method for estimating a stochastic link capacity by considering the uncertainty of the driver’s behaviour. We postulate that the stochastic link capacity follows a lognormal distribution. The characteristics of the lognormal distribution suit real traffic observation, e.g. nonnegativity, asymmetricity, and long-tailed. Furthermore, the estimated link capacity can derive the analytical likelihood function for the link performance function. Then, the link performance function can be estimated analytically by explicitly considering the source of uncertainty. The proposed methods can contribute to the estimation of stochastic link capacity and the link performance function for the user equilibrium model with stochastic travel time. A numerical calculation demonstrates the proposed method using real traffic observations in Sapporo, Japan.</div></div>","PeriodicalId":48871,"journal":{"name":"Transportmetrica A-Transport Science","volume":"21 1","pages":"Pages 27-49"},"PeriodicalIF":3.6,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41374798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0