Transportation Letters-The International Journal of Transportation Research最新文献_第6页

Enhancing energy-environmental efficiency of autonomous bus: an NMPC-based trajectory optimization model 提高自动驾驶客车的能源环境效率：基于nmpc的轨迹优化模型

IF 3.3 3区工程技术

Transportation Letters-The International Journal of Transportation Research Pub Date : 2026-02-07 Epub Date: 2025-09-03 DOI: 10.1080/19427867.2025.2548544

Shiyu Jiang , Xumei Chen , Yuqing Wang , Yixin Zhang , Yifan Zhu , Lei Yu

{"title":"Enhancing energy-environmental efficiency of autonomous bus: an NMPC-based trajectory optimization model","authors":"Shiyu Jiang , Xumei Chen , Yuqing Wang , Yixin Zhang , Yifan Zhu , Lei Yu","doi":"10.1080/19427867.2025.2548544","DOIUrl":"10.1080/19427867.2025.2548544","url":null,"abstract":"<div><div>Public transportation increasingly prioritizes cost reduction and energy-environmental efficiency (EEE). However, limited researches address entire-route trajectory optimization for autonomous buses (ABs), particularly hybrid electric buses (HEBs) with unique operating states. In this study, an improved Newell car-following model is proposed to generate initial bus trajectories, and a Vehicle Specific Power (VSP)-based EEE quantification model is developed to compute HEB energy consumption and emissions. A rolling-optimization model based on Nonlinear Model Predictive Control (NMPC) is then established, integrating dynamic and kinematic principles to enhance EEE and reduce operating time. Numerical simulations utilize real-world Bus Rapid Transit data from Chengdu, China. Results demonstrate that the optimized AB trajectories reduce CO₂ emissions and energy consumption by 8.7% and 12.3%, respectively, compared with initial AB trajectories, and achieve 13.2% and 17.6% reductions compared with conventional buses. The proposed method also improves operating stability, underscoring the potential for sustainable and efficient urban transit.</div></div>","PeriodicalId":48974,"journal":{"name":"Transportation Letters-The International Journal of Transportation Research","volume":"18 2","pages":"Pages 309-327"},"PeriodicalIF":3.3,"publicationDate":"2026-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147427490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Real-time pricing decision for electric carsharing systems with parking reservation using a fluid queueing network-based optimization 基于流体排队网络优化的带车位预约的电动汽车共享系统实时定价决策

IF 3.3 3区工程技术

Transportation Letters-The International Journal of Transportation Research Pub Date : 2026-01-02 Epub Date: 2025-07-30 DOI: 10.1080/19427867.2025.2534570

Hongxun Liu , Weiyao Xu , Boyu Hou , Lu Hu , Shiyun Tong

{"title":"Real-time pricing decision for electric carsharing systems with parking reservation using a fluid queueing network-based optimization","authors":"Hongxun Liu , Weiyao Xu , Boyu Hou , Lu Hu , Shiyun Tong","doi":"10.1080/19427867.2025.2534570","DOIUrl":"10.1080/19427867.2025.2534570","url":null,"abstract":"<div><div>In this paper, we integrate the fluid queueing theory and rolling horizon approach to investigate the real-time pricing scheme for an electric carsharing system (ECS) with parking reservation in dynamic stochastic environments. Specifically, we first employ an exponential model to capture the nonlinear interrelationship among the elastic demand, travel price, and travel time. The travel time is affected by exogenous congestion and endogenous congestion. Then, we develop a novel queueing network model for ECS. In this model, all the arriving and serving processes are non-homogeneous Poisson processes, and idle probabilities are introduced to consider the stochasticity of the vehicle departure process. Next, we propose a rolling optimization framework based on the queueing network model to maximize the expected operating profit by optimizing hourly service pricing. The pricing decision in each time-bound optimization phase is achieved by a fast convergence algorithm (Improved Simultaneous Perturbation Stochastic Approximation). Numerical experiments in the Chengdu case reveal some interesting findings.</div></div>","PeriodicalId":48974,"journal":{"name":"Transportation Letters-The International Journal of Transportation Research","volume":"18 1","pages":"Pages 137-160"},"PeriodicalIF":3.3,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146098768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Reinforcement learning control in complex freeway weaving sections under mixed traffic and platoon formation 混合交通下高速公路复杂交织路段的强化学习控制

IF 3.3 3区工程技术

Transportation Letters-The International Journal of Transportation Research Pub Date : 2026-01-02 Epub Date: 2025-07-30 DOI: 10.1080/19427867.2025.2527489

Anastasios Bithas , Emmanouil Kampitakis , Eleni I. Vlahogianni

引用次数: 0

The Electric mobility ecosystem: a literature review of transport electrification to define research paths for Africa 电动交通生态系统：交通电气化的文献综述，以确定非洲的研究路径

IF 3.3 3区工程技术

Transportation Letters-The International Journal of Transportation Research Pub Date : 2026-01-02 Epub Date: 2025-07-23 DOI: 10.1080/19427867.2025.2535491

Chinenye L. Okafor , Joubert Van Eeden , MJ Booysen , Megan Bruwer

引用次数: 0

Examining nonlinear effect of influencing factors on traffic flow at urban road intersections using explainable machine learning 利用可解释机器学习研究城市道路交叉口交通流影响因素的非线性效应

IF 3.3 3区工程技术

Transportation Letters-The International Journal of Transportation Research Pub Date : 2026-01-02 Epub Date: 2025-07-07 DOI: 10.1080/19427867.2025.2528765

Xiao Pan , Yalin Ke , Jing Sun , Chunbo Zhang

{"title":"Examining nonlinear effect of influencing factors on traffic flow at urban road intersections using explainable machine learning","authors":"Xiao Pan , Yalin Ke , Jing Sun , Chunbo Zhang","doi":"10.1080/19427867.2025.2528765","DOIUrl":"10.1080/19427867.2025.2528765","url":null,"abstract":"<div><div>Traffic congestion is a common problem in cities. Within the urban transportation system, road traffic flow plays a crucial role in determining the overall state of urban traffic conditions. This paper employs the eXtreme Gradient Boosting-SHapley Additive exPlanations (XGBoost-SHAP) model to analyze the factors affecting traffic flow at intersections in the central districts of Shijiazhuang. A nonlinear analysis of traffic flow across various periods is conducted from three aspects, i.e. built environment, service facilities, and economic attribute. The results demonstrate temporal heterogeneity in the influencing degree of factors on traffic flow. The influence of factors on traffic flow, including distances to the city center, road density, and the number of catering and shopping facilities, are significant. There are complex and nonlinear relationships between traffic flow and influencing factors. These research results can offer valuable guidance for enhancing the operational efficiency of urban road traffic.</div></div>","PeriodicalId":48974,"journal":{"name":"Transportation Letters-The International Journal of Transportation Research","volume":"18 1","pages":"Pages 60-71"},"PeriodicalIF":3.3,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146098763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Risk assessment of traffic violations in autonomous vehicles considering driving behavior 考虑驾驶行为的自动驾驶汽车交通违规风险评估

IF 3.3 3区工程技术

Transportation Letters-The International Journal of Transportation Research Pub Date : 2026-01-02 Epub Date: 2025-07-17 DOI: 10.1080/19427867.2025.2530584

Zhaowen Pang , Zhenbin Chen , Bin Sun , Jiayi Lu , Tianyang Gong , Xinjie Feng , Shichun Yang , Yaoguang Cao

{"title":"Risk assessment of traffic violations in autonomous vehicles considering driving behavior","authors":"Zhaowen Pang , Zhenbin Chen , Bin Sun , Jiayi Lu , Tianyang Gong , Xinjie Feng , Shichun Yang , Yaoguang Cao","doi":"10.1080/19427867.2025.2530584","DOIUrl":"10.1080/19427867.2025.2530584","url":null,"abstract":"<div><div>The advent of autonomous vehicles brings profound changes to transportation while introducing new safety challenges, especially regarding traffic regulation compliance. This paper proposes a novel comprehensive risk assessment method considering driving behaviors to quantify traffic violation risks posed by autonomous systems. Grounded in Chinese traffic regulations, the method analyzes and defines key indicators of autonomous driving behavior and classifies risks into real-time and cumulative categories. By incorporating environmental safety entropy, a comprehensive risk profile is produced. Through simulation analysis using specific scenarios and datasets, combined with validation through on-road tests conducted with autonomous vehicles, the findings affirm the efficacy and practicality of this approach in quantifying the risks associated with autonomous driving. This research offers a scientific framework for quantifying risks and informing policy related to autonomous driving. It also aids in optimizing safety and reducing violations, enhancing the reliability of autonomous vehicle technology.</div></div>","PeriodicalId":48974,"journal":{"name":"Transportation Letters-The International Journal of Transportation Research","volume":"18 1","pages":"Pages 88-105"},"PeriodicalIF":3.3,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146098764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Low-carbon travel intention: examining the influence of built environment and policy perceptions in China using a structural equation modeling approach 低碳出行意愿：基于结构方程模型的中国建筑环境与政策认知影响研究

IF 3.3 3区工程技术

Transportation Letters-The International Journal of Transportation Research Pub Date : 2026-01-02 Epub Date: 2025-06-26 DOI: 10.1080/19427867.2025.2523370

Yingjie Sheng , Anning Ni , Lijie Liu , Linjie Gao , Yi Zhang , Guangnian Xiao , Yutong Zhu

{"title":"Low-carbon travel intention: examining the influence of built environment and policy perceptions in China using a structural equation modeling approach","authors":"Yingjie Sheng , Anning Ni , Lijie Liu , Linjie Gao , Yi Zhang , Guangnian Xiao , Yutong Zhu","doi":"10.1080/19427867.2025.2523370","DOIUrl":"10.1080/19427867.2025.2523370","url":null,"abstract":"<div><div>Promoting low-carbon travel is critical for decarbonizing the transportation sector. This study extends the Theory of Planned Behavior (TPB) by integrating subjective perceptions of the built environment and transportation policies to understand their influence on travelers’ low-carbon travel intentions. Using structural equation modeling (SEM) based on survey data from Shanghai, China, the results show that traveler attitude has the strongest direct effect on intentions. Encouraging policies are found to be more effective than restrictive ones, underscoring the importance of positive incentives. To address population heterogeneity, machine learning models and SHapley Additive exPlanations (SHAP) analysis are applied to identify key demographic factors, including age, income, and fuel costs, for targeted policy design. The findings provide theoretical and practical insights for policymakers aiming to promote sustainable travel behavior through tailored strategies.</div></div>","PeriodicalId":48974,"journal":{"name":"Transportation Letters-The International Journal of Transportation Research","volume":"18 1","pages":"Pages 1-22"},"PeriodicalIF":3.3,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146098765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Analysis of conflict risk causes in urban expressway diverging areas: considering unobserved heterogeneity and their interactions 城市快速路分流区冲突风险成因分析：考虑未观测异质性及其相互作用

IF 3.3 3区工程技术

Transportation Letters-The International Journal of Transportation Research Pub Date : 2026-01-02 Epub Date: 2025-07-26 DOI: 10.1080/19427867.2025.2537173

Jiaqiang Wen , Nengchao Lyu , Yanyong Guo , Jianatihan Jinsihan

{"title":"Analysis of conflict risk causes in urban expressway diverging areas: considering unobserved heterogeneity and their interactions","authors":"Jiaqiang Wen , Nengchao Lyu , Yanyong Guo , Jianatihan Jinsihan","doi":"10.1080/19427867.2025.2537173","DOIUrl":"10.1080/19427867.2025.2537173","url":null,"abstract":"<div><div>Urban expressway diverging areas face higher conflict risks due to complex weaving movements. This study aims to explore the determinants influencing conflict risk in diverging areas. High-resolution trajectory data totaling 32.1 hours from six expressway diverging areas in Wuhan were collected using unmanned aerial vehicles. By incorporating vehicle kinematic information, a new method for identifying traffic conflicts in a two-dimensional plane was defined. Based on this, a correlated random parameters multinomial logit model with heterogeneity in means was developed by relaxing fixed constraints on the means of random parameters, and allowing potential correlations among random parameters. The results show that exit configuration, speed difference between lanes, acceleration, and vehicle in exit significantly influence conflict risk, with their estimates exhibiting random effects. The influencing factors for lateral and longitudinal conflict risks differ. The findings provide insights for improving traffic safety in expressway diverging areas.</div></div>","PeriodicalId":48974,"journal":{"name":"Transportation Letters-The International Journal of Transportation Research","volume":"18 1","pages":"Pages 161-178"},"PeriodicalIF":3.3,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146098769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Higher sense of power, less dangerous driving behaviors: perceived control as mediator and subjective social status as moderator 权力感越高，危险驾驶行为越少：知觉控制为中介，主观社会地位为调节因子

IF 3.3 3区工程技术

Transportation Letters-The International Journal of Transportation Research Pub Date : 2026-01-02 Epub Date: 2025-07-21 DOI: 10.1080/19427867.2025.2533009

Tianxiao Wang , Anqi Xie , Yan Ge , Weina Qu

{"title":"Higher sense of power, less dangerous driving behaviors: perceived control as mediator and subjective social status as moderator","authors":"Tianxiao Wang , Anqi Xie , Yan Ge , Weina Qu","doi":"10.1080/19427867.2025.2533009","DOIUrl":"10.1080/19427867.2025.2533009","url":null,"abstract":"<div><div>To promote road safety, it is essential to determine the various self-perception factors influencing dangerous driving behaviors and explore the inner mechanisms. The main purpose of this study was to investigate the effects of sense of power, perceived control, and subjective social status on dangerous driving behaviors in a sample of drivers located in China. A total of 426 drivers completed the questionnaires on sense of power, perceived control, and subjective social status and the driver behavior questionnaire (DBQ). The results of path analysis showed that (1) sense of power positively predicted perceived control and negatively predicted dangerous driving behaviors; (2) perceived control negatively predicted errors and lapses of DBQ and mediated the relationship between them and sense of power; and (3) subjective social status moderated the effect of sense of power on perceived control. The present study expands the scope of the influencing factors of dangerous driving behaviors while providing practical guidance in the domain of safe driving.</div></div>","PeriodicalId":48974,"journal":{"name":"Transportation Letters-The International Journal of Transportation Research","volume":"18 1","pages":"Pages 126-136"},"PeriodicalIF":3.3,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146098761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 the impact of penalty strategies for cancellation behavior on the sustainability of demand-responsive transit service 评估取消行为的惩罚策略对需求响应型交通服务可持续性的影响

IF 3.3 3区工程技术

Transportation Letters-The International Journal of Transportation Research Pub Date : 2026-01-02 Epub Date: 2025-07-28 DOI: 10.1080/19427867.2025.2532274

Hongfei Wang , Hongzhi Guan , Huanmei Qin , Pengfei Zhao , Weiwei Liang

{"title":"Assessing the impact of penalty strategies for cancellation behavior on the sustainability of demand-responsive transit service","authors":"Hongfei Wang , Hongzhi Guan , Huanmei Qin , Pengfei Zhao , Weiwei Liang","doi":"10.1080/19427867.2025.2532274","DOIUrl":"10.1080/19427867.2025.2532274","url":null,"abstract":"<div><div>The increasing urbanization has led to a growing demand for flexible transportation solutions, making demand-responsive transit (DRT) a promising alternative to traditional public transport. Nevertheless, passenger cancellation behavior poses the challenges to the reliability and sustainability of DRT services. To assess the impact of cancellation behavior, a two-phase optimization framework is established in this study. Penalty strategies can be divided into time-based penalty strategy and fixed-penalty strategy. Additionally, we construct a hybrid heuristic algorithm that combines variable neighborhood search (VNS) and rolling horizon in response to dynamic characteristics. Numerous experiments on a realistic network in Beijing are further performed to evaluate the impact of cancellation behavior on the DRT service. At the same level of penalty cost, DRT service with time-based penalty strategy was superior to the service with fixed penalty strategy. This study is sconducive to the economic, social, and environmental sustainability of DRT services.s.</div></div>","PeriodicalId":48974,"journal":{"name":"Transportation Letters-The International Journal of Transportation Research","volume":"18 1","pages":"Pages 106-125"},"PeriodicalIF":3.3,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146098796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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