IET Intelligent Transport Systems最新文献

Energy-Efficient Control Optimization of Subway Train with Bidirectional Converter Substations 双向变流器变电站地铁列车节能控制优化

IF 2.3 4区工程技术

IET Intelligent Transport Systems Pub Date : 2025-07-24 DOI: 10.1049/itr2.70065

Chengcheng Fu, Pengfei Sun, Qingyuan Wang, Xiaoyun Feng

{"title":"Energy-Efficient Control Optimization of Subway Train with Bidirectional Converter Substations","authors":"Chengcheng Fu, Pengfei Sun, Qingyuan Wang, Xiaoyun Feng","doi":"10.1049/itr2.70065","DOIUrl":"https://doi.org/10.1049/itr2.70065","url":null,"abstract":"The energy consumption of the subway has attracted much attention. Applying bidirectional converter substations (BCS) and researching energy-efficient train control (EETC) strategies can effectively reduce the energy consumption of the subway system. This paper analyzes the coupling model of power supply-train operation with rectifier substations (RS) and BCS. To minimize the energy consumption of substations, an optimal control problem model of EETC is established, and a multi-stage dynamic programming algorithm with state space reduction is designed to solve the train energy-saving speed profile. The EETC results of different line conditions with RS and BCS are presented. The results indicate that the EETC changes with the type of substations, where trains with BCS adopt regenerative braking conditions matched with the inverter turn-on voltage to feed back energy. The relationship between train running time and energy consumption is analyzed, showing that EETC with BCS has superior energy-saving effects and operational efficiency to EETC with RS. Results demonstrate the effectiveness and energy-saving effects of the optimization methods presented in this paper.","PeriodicalId":50381,"journal":{"name":"IET Intelligent Transport Systems","volume":"19 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/itr2.70065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144688084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Real-Time Multi-Train Trajectory Optimisation and Delay Recovery Using SH-MPC Integrated With Genetic Algorithms 结合遗传算法的SH-MPC实时多列轨道优化与延迟恢复

IF 2.3 4区工程技术

IET Intelligent Transport Systems Pub Date : 2025-07-24 DOI: 10.1049/itr2.70053

Zhu Li, Ning Zhao, Clive Roberts, Lei Chen

引用次数: 0

Rate Splitting Multiple Access in V2X V2X中的分频多址

IF 2.3 4区工程技术

IET Intelligent Transport Systems Pub Date : 2025-07-23 DOI: 10.1049/itr2.70067

Arun Kumar, Sumit Chakravarthy, Rashid Amin, Aziz Nanthaamornphong

{"title":"Rate Splitting Multiple Access in V2X","authors":"Arun Kumar, Sumit Chakravarthy, Rashid Amin, Aziz Nanthaamornphong","doi":"10.1049/itr2.70067","DOIUrl":"https://doi.org/10.1049/itr2.70067","url":null,"abstract":"This paper investigates the integration of rate-splitting multiple access (RSMA) into cellular vehicle-to-everything (C-V2X) networks to enhance resource allocation and interference management in decentralized, ad-hoc vehicular communication environments. C-V2X facilitates communication among vehicles, infrastructure, and pedestrians, and traditionally relies on orthogonal frequency division multiple access (OFDMA). However, OFDMA's rigidity limits its effectiveness under dynamic interference and imperfect channel state information (CSI) conditions typical of vehicular networks. RSMA, which blends features of spatial division multiple access (SDMA) and non-orthogonal multiple access (NOMA), provides a more adaptive framework by splitting messages into common and private parts, thereby improving spectral efficiency and interference handling. To assess RSMA's applicability, the LTEV2Vsim simulator was extended to include RSMA functionality, incorporating features such as reputation-based grouping, group-wise resource synchronization, and simplified beamforming. A dynamic grouping algorithm selects high-reputation vehicles as transmission leaders to form multi-vehicle groups of varying sizes for RSMA-based transmission. For interference modeling, self-interference is excluded from SINR calculations, and beamforming-based inter-vehicle interference is approximated. Simulation results reveal that RSMA outperforms OFDMA in terms of spectral efficiency and adaptability, particularly under conditions of incomplete CSI and varying interference. The findings confirm RSMA's suitability for complex and fast-changing vehicular environments, indicating its potential as a robust multiple access scheme for future C-V2X deployments.","PeriodicalId":50381,"journal":{"name":"IET Intelligent Transport Systems","volume":"19 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/itr2.70067","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144681560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A New Perspective on Defining Dynamic Origin-Destination Data and Predicting it Using Deep Learning Methods 基于深度学习方法的动态始发目的地数据定义与预测新视角

IF 2.3 4区工程技术

IET Intelligent Transport Systems Pub Date : 2025-07-22 DOI: 10.1049/itr2.70068

Wei-Ting Sung, Jin-Yuan Wang

{"title":"A New Perspective on Defining Dynamic Origin-Destination Data and Predicting it Using Deep Learning Methods","authors":"Wei-Ting Sung, Jin-Yuan Wang","doi":"10.1049/itr2.70068","DOIUrl":"https://doi.org/10.1049/itr2.70068","url":null,"abstract":"The prediction of dynamic origin-destination (OD) data is critical for facilitating real-time traffic management across traffic networks. Despite numerous efforts to integrate the temporal and spatial characteristics of OD data to capture the nonlinearity and high dynamics of traffic flow, prior studies usually rely on link-level or region-level data for model construction. The temporal relationships among origin traffic flow, destination traffic flow, and OD flow remain insufficiently understood. To address this gap, we propose a novel definition of dynamic OD data using real-world OD datasets. Our framework can incorporate different temporal distributions for each OD pair. Additionally, the framework ensures flow conservation from either the origin or the destination perspective. The performance of the proposed framework is validated through numerical studies using real-world electronic toll collection (ETC) gantry data. A multi-task long short-term memory (LSTM) model predicts OD flows, and both the predictions and the resulting destination traffic distributions are statistically indistinguishable from the observed values. Furthermore, this approach enables the prediction of arrival volumes before trip completion, offering valuable insights for real-time traffic management.","PeriodicalId":50381,"journal":{"name":"IET Intelligent Transport Systems","volume":"19 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/itr2.70068","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Self-Attention Enhanced Hypergraph Convolution Network for Traffic Speed Forecasting 交通速度预测的自注意增强超图卷积网络

IF 2.3 4区工程技术

IET Intelligent Transport Systems Pub Date : 2025-07-14 DOI: 10.1049/itr2.70061

Yapeng Qi, Xia Zhao, Zhihong Li, Bo Shen

{"title":"A Self-Attention Enhanced Hypergraph Convolution Network for Traffic Speed Forecasting","authors":"Yapeng Qi, Xia Zhao, Zhihong Li, Bo Shen","doi":"10.1049/itr2.70061","DOIUrl":"https://doi.org/10.1049/itr2.70061","url":null,"abstract":"Accurate traffic speed prediction is important in modern society for its effectiveness in route navigation, estimated time of arrival calculations and other practical applications. As the road network is complicated, traffic speed exhibits high-order correlations among regions, namely many-to-many spatial correlations, while also displaying long-term temporal dependencies. However, existing studies have not effectively modelled these characteristics. In this context, this study proposes a self-attention enhanced hypergraph convolution network (SE-HCN) for accurate speed prediction. The proposed SE-HCN consists of four modules. Specifically, we design a relation extraction module, which can obtain the similarity of road sections from geographical information and clustering. Subsequently, the model contains a spatial correlation hypergraph convolutional module and a long-term temporal dependencies transformer module to capture spatio-temporal features comprehensively. Two public real-world datasets - PeMSBAY and PeMSD7-M - were tested to validate the model's performance, and the result demonstrates that our approach achieved state-of-the-art performance.","PeriodicalId":50381,"journal":{"name":"IET Intelligent Transport Systems","volume":"19 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/itr2.70061","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144615366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Evaluating the Impact of Cellular Tower Density on Intercity Travel OD Identification Using Mobile Signalling Data: An Empirical Comparison of ST-DBSCAN and Bi-LSTM Algorithms 利用移动信号数据评估蜂窝塔密度对城际旅行OD识别的影响：ST-DBSCAN和Bi-LSTM算法的实证比较

IF 2.3 4区工程技术

IET Intelligent Transport Systems Pub Date : 2025-07-11 DOI: 10.1049/itr2.70064

Lilei Wang, Fei Yang, Peng Sun, Yaping Cui, Xiaoqing Dai, Cheng Wang

{"title":"Evaluating the Impact of Cellular Tower Density on Intercity Travel OD Identification Using Mobile Signalling Data: An Empirical Comparison of ST-DBSCAN and Bi-LSTM Algorithms","authors":"Lilei Wang, Fei Yang, Peng Sun, Yaping Cui, Xiaoqing Dai, Cheng Wang","doi":"10.1049/itr2.70064","DOIUrl":"https://doi.org/10.1049/itr2.70064","url":null,"abstract":"Significant differences in cellular tower density across cities pose a major challenge for identifying intercity travel origin-destination (OD) pairs from mobile phone signalling data. Many existing OD identification algorithms apply uniform parameters across cities, which can undermine detection accuracy in heterogeneous networks, and their performance remains underexplored under varied tower density conditions. To address this gap, we conducted a field experiment collecting mobile signalling data from intercity trips in two metropolitan regions with different tower densities, while recording GPS trajectories and travel diaries as ground truth. We compared the unsupervised spatiotemporal clustering method (ST-DBSCAN) and the supervised deep learning model (Bi-LSTM) for OD identification. Furthermore, we introduced a novel genetic algorithm adaptive parameter selection mechanism to enhance performance under different density conditions by dynamically adjusting ST-DBSCAN's clustering radius, time threshold and minimum cluster size, as well as tuning Bi-LSTM's input features and time window length. Results show that this adaptive approach significantly improved OD identification accuracy, with optimised ST-DBSCAN achieving 84% accuracy and Bi-LSTM 91%. These findings highlight the importance of adaptive algorithm calibration and offer theoretical insights and practical guidance for more reliable intercity travel modelling in metropolitan areas with heterogeneous cellular infrastructure.","PeriodicalId":50381,"journal":{"name":"IET Intelligent Transport Systems","volume":"19 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/itr2.70064","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Multi-Objective Optimization Method for Matching Between Bulk Cargo Order and Ship Based on Improved NSGA-II Algorithm 基于改进NSGA-II算法的散货订单与船舶匹配多目标优化方法

IF 2.3 4区工程技术

IET Intelligent Transport Systems Pub Date : 2025-07-11 DOI: 10.1049/itr2.70063

Wang Peng, Qianyu Zhou, Xiaohua Cao, Jingxuan Shao

{"title":"Multi-Objective Optimization Method for Matching Between Bulk Cargo Order and Ship Based on Improved NSGA-II Algorithm","authors":"Wang Peng, Qianyu Zhou, Xiaohua Cao, Jingxuan Shao","doi":"10.1049/itr2.70063","DOIUrl":"https://doi.org/10.1049/itr2.70063","url":null,"abstract":"To increase the loading rate of bulk carriers and reduce the cost of loading and transportation, it is necessary to rationally match bulk orders with vessel resources. Decision-making on order-ship matching is difficult due to the need to consider issues such as order splitting, bulk cargo variety switching, and liner routes. This paper aims to optimise the ship loading rate, loading variety switching cost, and transportation cost by constructing a three-objective order-ship matching optimisation model. Addressing the problems of poor solution set diversity and search ability in the traditional NSGA-II algorithm for large-scale problems, this paper proposes using the First Fit algorithm as an initialisation method to reduce the solution space. Additionally, an adaptive greedy evolution operator is designed to improve the searchability of the NSGA-II algorithm. Finally, an aggregate producer is used as an example to verify the feasibility of the matching algorithm. Experimental results show that the algorithm achieves an average ship loading rate of over 93% for the matching scheme and reduces costs in solving the ship waybill scheme when the problem size is large.","PeriodicalId":50381,"journal":{"name":"IET Intelligent Transport Systems","volume":"19 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/itr2.70063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Enhancing Intersection Safety at Uncontrolled Three-Legged Intersections Through Assessment of Risk 通过风险评估提高非受控三足交叉口的安全性

IF 2.3 4区工程技术

IET Intelligent Transport Systems Pub Date : 2025-07-10 DOI: 10.1049/itr2.70062

Khushbu Bhatt, Jiten Shah, Margaret C. Bell, Dilum Dissanayake

{"title":"Enhancing Intersection Safety at Uncontrolled Three-Legged Intersections Through Assessment of Risk","authors":"Khushbu Bhatt, Jiten Shah, Margaret C. Bell, Dilum Dissanayake","doi":"10.1049/itr2.70062","DOIUrl":"https://doi.org/10.1049/itr2.70062","url":null,"abstract":"The accepted gap—the time or distance a driver deems sufficient to enter or cross an intersection—is a key indicator of traffic risk, particularly at uncontrolled three-legged intersections. Smaller accepted gaps are linked to higher risk due to an increased chance of vehicle conflicts. This study investigates the relationship between accepted gaps and risk and proposes a method to quantify the level of risk and severity (LORS) to guide targeted safety interventions. Data on vehicle speed, accepted gap and critical gap were collected from six rural intersections in India. Using a binary logit regression model and clustering techniques, the LORS was estimated and validated against actual accident data, yielding a predictive accuracy of up to 83%.The significance of this study lies in its novel data-driven approach to safety assessment using parameters easily measured in the field. Designed for heterogeneous traffic conditions, the method provides traffic engineers and planners with a practical tool to assess intersection safety, recommend specific remedial measures and prioritise interventions based on risk and severity levels. With potential for automation and scalability, this research contributes to the development of safer road systems, particularly in low-resource settings where conventional crash data is limited or unavailable.","PeriodicalId":50381,"journal":{"name":"IET Intelligent Transport Systems","volume":"19 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/itr2.70062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Safe Passage Strategy With Swarm Intelligence for CAVs in Urban Road Heterogeneous Traffic Flow Using Standard Alliance Game 基于标准联盟博弈的城市道路异构交通流中自动驾驶汽车群体智能安全通行策略

IF 2.3 4区工程技术

IET Intelligent Transport Systems Pub Date : 2025-07-08 DOI: 10.1049/itr2.70056

Jixiang Wang, Siqi Chen, Jing Wei, Haiyang Yu, Yilong Ren

{"title":"Safe Passage Strategy With Swarm Intelligence for CAVs in Urban Road Heterogeneous Traffic Flow Using Standard Alliance Game","authors":"Jixiang Wang, Siqi Chen, Jing Wei, Haiyang Yu, Yilong Ren","doi":"10.1049/itr2.70056","DOIUrl":"https://doi.org/10.1049/itr2.70056","url":null,"abstract":"This study introduces an innovative approach to distributed cooperative gaming for CAVs in urban road traffic scenarios, aimed at ensuring safe passage. This method treats every connected vehicle in the heterogeneous traffic flow as a player in the game. The individual payoffs for these players are clearly defined by quantifying factors such as travel safety risk, fairness and efficiency. Furthermore, three protocols are developed from the perspectives of enhancing individual payoff and improving alliance stability. These protocols enable CAVs to achieve logical control under conflicting interference from CHVs. By utilising alliance cooperative gaming, CAVs can collectively determine their strategies, avoiding the pitfalls of individual decision-making that could result in mutually detrimental outcomes. The proposed alliance solution method addresses the multi-vehicle simultaneous conflict problem by employing a structured, step-by-step approach that involves conflict decoupling and classification. The following important findings are derived from simulation analysis: the CAV achieves swarm intelligence robust control in a heterogeneous traffic environment through a standard alliance game, which not only effectively ensures safe passage, but also increases the passage efficiency of heterogeneous traffic flow by at the very least 10%, and the suggested approach works better in situations with low densities and high CAV penetration rates.","PeriodicalId":50381,"journal":{"name":"IET Intelligent Transport Systems","volume":"19 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/itr2.70056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144573962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Self-Correction Transformer Network for Traffic Flow Prediction Under Dynamic Spatio-Temporal Distributions 动态时空分布下的自校正变压器网络交通流预测

IF 2.3 4区工程技术

IET Intelligent Transport Systems Pub Date : 2025-07-07 DOI: 10.1049/itr2.70044

Jingru Sun, Ziyu Qiu, Yichuang Sun, Oluyomi Simpson

{"title":"A Self-Correction Transformer Network for Traffic Flow Prediction Under Dynamic Spatio-Temporal Distributions","authors":"Jingru Sun, Ziyu Qiu, Yichuang Sun, Oluyomi Simpson","doi":"10.1049/itr2.70044","DOIUrl":"https://doi.org/10.1049/itr2.70044","url":null,"abstract":"Precise and timely traffic flow prediction plays a critical role in developing intelligent transportation systems and has attracted considerable attention in recent decades. The traffic flow has a non-stationary character in both time and space, when the drift phenomenon appears, the traffic flow undergoes significant and sudden changes, bringing the challenge to the prediction. This paper proposed a self-supervised learning-based adaptive spatiotemporal self-correction transformer traffic flow prediction network (SCTNet). SCTNet can feel the drift with self-supervised learning, compute distribution features of the test data, obtain the distribution difference signal, feed it into the model as network correction information, and then adjust the spatiotemporal dependence of traffic flow adaptively to enhance prediction accuracy. The self-supervised learning method can adjust the model quickly and smoothly, and be utilized in most existing traffic flow prediction models. The experiments demonstrate that compared to existing models, the proposed self-supervised learning SCTNet has achieved state-of-the-art performance and exhibited strong adaptability to the dynamically changing spatiotemporal distributions of traffic data.","PeriodicalId":50381,"journal":{"name":"IET Intelligent Transport Systems","volume":"19 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/itr2.70044","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144573605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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