International Journal of Transportation Science and Technology最新文献_第8页

Measurement error propagation laws and comparative scheme study in sensor location problem based on turning ratios 基于转弯率的传感器定位问题测量误差传播规律及比较方案研究

IF 4.8

International Journal of Transportation Science and Technology Pub Date : 2026-03-01 Epub Date: 2025-01-16 DOI: 10.1016/j.ijtst.2025.01.005

Minhua Shao , Yaowei Guo , Chenyang Zhou

{"title":"Measurement error propagation laws and comparative scheme study in sensor location problem based on turning ratios","authors":"Minhua Shao , Yaowei Guo , Chenyang Zhou","doi":"10.1016/j.ijtst.2025.01.005","DOIUrl":"10.1016/j.ijtst.2025.01.005","url":null,"abstract":"<div><div>The sensor location flow-observability problem is to identify the optimal set of observed links in a traffic network where sensors should be installed, ensuring that unobserved link flows can be uniquely inferred. Inevitably, measurement errors will occur on the observed links, impacting the accuracy of the inferred link flows. This study aims to uncover the laws of measurement error propagation and identify a sensor location scheme that minimizes the effect of these errors on link flow inference, while achieving full observability of all link flows. First, quantitative indices reflecting the effect of measurement errors on link flow inference were defined, based on a flow conservation system utilizing turning ratios at intersections. Then, mathematically, the laws of measurement error propagation for the exclusive incoming scheme, where sensors are deployed only at the entry points of the road network, are first derived. Finally, the effects of measurement errors on link flow inference are compared across different sensor location schemes to find the optimum one. Given the particularity of the exclusive incoming scheme, the Monte Carlo method was used to compare the effects of measurement errors between the exclusive incoming scheme and other schemes. The results indicate that, compared with other schemes, the exclusive incoming scheme has a significant advantage in controlling the effect of measurement errors on link flow inference, and this advantage increases as the size of the road network grows.</div></div>","PeriodicalId":52282,"journal":{"name":"International Journal of Transportation Science and Technology","volume":"21 ","pages":"Pages 61-76"},"PeriodicalIF":4.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147557223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 traffic conflict prediction at signalized intersections using vehicle trajectory data and deep learning 基于车辆轨迹数据和深度学习的信号交叉口交通冲突实时预测

IF 4.8

International Journal of Transportation Science and Technology Pub Date : 2025-12-01 Epub Date: 2024-10-23 DOI: 10.1016/j.ijtst.2024.10.009

Gongquan Zhang , Jieling Jin , Fangrong Chang , Helai Huang

{"title":"Real-time traffic conflict prediction at signalized intersections using vehicle trajectory data and deep learning","authors":"Gongquan Zhang , Jieling Jin , Fangrong Chang , Helai Huang","doi":"10.1016/j.ijtst.2024.10.009","DOIUrl":"10.1016/j.ijtst.2024.10.009","url":null,"abstract":"<div><div>Real-time conflict prediction at signalized intersections is crucial for urban road safety management. This study developed a real-time conflict prediction framework for signalized intersections using real-time video data recognition technology and deep learning techniques, incorporating lane-level information and feature interactions. The modeling framework consists of three stages: real-time video data extraction and processing, the development of a deep and cross network (DCN)-based real-time traffic conflict prediction model, and conflict-driven factor interpretability analysis through Shapley additive explanations (SHAP). In the first stage, an efficient automated trajectory extraction system is designed to obtain vehicle trajectories in real time for dynamic traffic parameters and conflict frequency identification. In the second stage, a DCN model is developed to construct the relationships between dynamic traffic parameters, including their interactions, and traffic conflicts. In the third stage, SHAP explores the impact mechanisms of different dynamic traffic parameters on traffic conflicts. The model’s predictive performance and interpretability are evaluated using intersection video data from Changsha City, China. The results are as follows. (1) In real-time traffic conflict prediction at signalized intersections across different modified time-to-conflict thresholds (1.5 s and 3.0 s), the DCN model consistently outperformed statistical and machine learning models. (2) High traffic flows on main and secondary roads at signalized intersections significantly increase the complexity and frequency of conflicts, with varying sensitivity depending on the interaction of traffic flow, speed, and platoon length. (3) The proposed framework provides a safety measurement standard for data-driven road safety management methods.</div></div>","PeriodicalId":52282,"journal":{"name":"International Journal of Transportation Science and Technology","volume":"20 ","pages":"Pages 82-96"},"PeriodicalIF":4.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First train schedule optimization for metro systems considering minimum adjustment cost for special event scenarios 考虑特殊事件情景下最小调整成本的地铁系统首列调度优化

IF 4.8

International Journal of Transportation Science and Technology Pub Date : 2025-12-01 Epub Date: 2024-11-17 DOI: 10.1016/j.ijtst.2024.11.002

Wei Li, Ruicai Peng, Qin Luo, Yihong Mo

{"title":"First train schedule optimization for metro systems considering minimum adjustment cost for special event scenarios","authors":"Wei Li, Ruicai Peng, Qin Luo, Yihong Mo","doi":"10.1016/j.ijtst.2024.11.002","DOIUrl":"10.1016/j.ijtst.2024.11.002","url":null,"abstract":"<div><div>During special events, some metro lines and stations may alter their first train schedules to an earlier time, while others remain unchanged. These adjustments can result in longer transfer waiting times for passengers, negatively impacting the overall quality of metro services. Thus, optimizing first train schedules is essential, as it directly influences morning service quality and passengers’ ability to complete their journeys. However, this task is complicated by the elastic nature of passenger flow and inflexibility of published schedules. To tackle this issue, this paper presents a mathematical model that captures the elastic demand for early-morning travel. It also proposes an optimization approach for reducing both the adjustment costs of first-train schedule changes and transfer redundancy time throughout the network. By applying linearization techniques, the problem is reformulated into a linear programming model. The effectiveness of this method is demonstrated through a case study of the Shenzhen metro, which showed a 9.1% reduction in average transfer redundancy time by adjusting the departure times of first trains on two lines and at ten stations during a special event. These results indicate that for metro systems with fixed first train schedules, carefully adjusting departure times at specific stations can effectively accommodate early-morning passenger needs and improve the overall quality of morning services.</div></div>","PeriodicalId":52282,"journal":{"name":"International Journal of Transportation Science and Technology","volume":"20 ","pages":"Pages 121-139"},"PeriodicalIF":4.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deployment of public charging stations for BEVs using an agent-based modeling approach 使用基于代理的建模方法为纯电动汽车部署公共充电站

IF 4.8

International Journal of Transportation Science and Technology Pub Date : 2025-12-01 Epub Date: 2024-10-19 DOI: 10.1016/j.ijtst.2024.10.003

Hao Li , Lu Yu , Yannan Zhao , Hongtao Wu , Huizhao Tu

{"title":"Deployment of public charging stations for BEVs using an agent-based modeling approach","authors":"Hao Li , Lu Yu , Yannan Zhao , Hongtao Wu , Huizhao Tu","doi":"10.1016/j.ijtst.2024.10.003","DOIUrl":"10.1016/j.ijtst.2024.10.003","url":null,"abstract":"<div><div>A low utilization rate of public chargers and unmatched deployment of public charging stations (CSs) are partly attributed to inappropriate modeling of charging behavior and biased charging demand estimation. This study proposes an optimization methodology for public CS deployment, considering real charging behavior and interactions between battery electric vehicle (BEV) users and CSs. Realistic charging choice behavior is modeled based on surveys, and a dynamic charging decision chain is simulated, allowing interactions between BEV users and CSs through an agent-based modeling (ABM) approach. The charging-related activities are triggered by state of charge (SOC) levels randomly generated from distributions derived from real BEV operating data, including the random SOC levels at the start of a trip, the SOC level that prompts the user to charge the BEV, and the SOC level at which the user stops charging the BEV. A bi-level programming model is proposed to optimize the deployment schemes for building new CSs considering the existing CSs, to determine the location and the capacity of new CSs. The objective is to minimize the total time cost per BEV user, including travel time, charging time and waiting time in the queue. An application is conducted, for the deployment of fast CSs in Washington State, USA. The results show that our method could provide effective guidance for allocating new CSs that are good supplements to the existing heavy-load CSs to share their charging load and relieve their serious queuing problems. The optimized deployment scheme can efficiently alleviate long waiting times at existing CSs, leading to a more balanced utilization among CSs. The proposed approach is expected to contribute to better planning and deployment of public CSs, satisfaction of the booming charging demand, and increased utilization of public CSs.</div></div>","PeriodicalId":52282,"journal":{"name":"International Journal of Transportation Science and Technology","volume":"20 ","pages":"Pages 15-34"},"PeriodicalIF":4.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Collective accessibility impacts of public transport automation on rural areas: the case study of Mühlwald, South Tyrol 公共交通自动化对农村地区集体可达性的影响：以南蒂罗尔的m<e:1>尔瓦尔德为例

IF 4.8

International Journal of Transportation Science and Technology Pub Date : 2025-12-01 Epub Date: 2024-11-17 DOI: 10.1016/j.ijtst.2024.11.004

Alberto Dianin , Michael Gidam , Elisa Ravazzoli , Georg Hauger

{"title":"Collective accessibility impacts of public transport automation on rural areas: the case study of Mühlwald, South Tyrol","authors":"Alberto Dianin , Michael Gidam , Elisa Ravazzoli , Georg Hauger","doi":"10.1016/j.ijtst.2024.11.004","DOIUrl":"10.1016/j.ijtst.2024.11.004","url":null,"abstract":"<div><div>Collective autonomous vehicles (AVs) might change the accessibility of rural areas in the following decades. For instance, the operating cost savings triggered by automation could allow upgrading traditional bus lines or introducing alternative on-demand services. These improvements could benefit rural dwellers as a whole, especially people who rely on collective transport. Nevertheless, few studies focus on the applications and accessibility impacts of AVs in rural areas, with most research focused on urban centers. This study aims to fill this gap by analyzing the potential effects of five collective automation scenarios on the accessibility of a rural study area: the Alpine valley of Mühlwald in South Tyrol (Italy). The AV scenarios propose line-based and on-demand services and combinations of both over space and time. The study measures their accessibility impacts at the collective level. However, accessibility is not estimated through a traditional place-based approach like a gravity model. Instead, a space–time model performs person-based accessibility calculations for a sample of residents, and aggregates the results at the collective and spatial level. Results show that scenarios replacing today’s system with on-demand and rideshared AVs could provide the highest collective accessibility gains, especially when considering the destinations outside Mühlwald. However, also a mix of line-based and on-demand services combined over space and time could achieve similarly high benefits, especially within Mühlwald. With these results, policymakers may get a picture of the pros and cons of different AV applications for rural accessibility and start discussing how to improve current systems in future based on their policy priorities and desired accessibility effects.</div></div>","PeriodicalId":52282,"journal":{"name":"International Journal of Transportation Science and Technology","volume":"20 ","pages":"Pages 97-120"},"PeriodicalIF":4.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Roles and functions of asphalt sub-ballast in the modern maintenance of the European railways 沥青压载物在现代欧洲铁路养护中的作用和作用

IF 4.8

International Journal of Transportation Science and Technology Pub Date : 2025-12-01 Epub Date: 2025-01-06 DOI: 10.1016/j.ijtst.2024.12.003

Aldo La Placa , Federico Autelitano , Larysa Neduzha , Oleksii Tiutkin , Felice Giuliani

{"title":"Roles and functions of asphalt sub-ballast in the modern maintenance of the European railways","authors":"Aldo La Placa , Federico Autelitano , Larysa Neduzha , Oleksii Tiutkin , Felice Giuliani","doi":"10.1016/j.ijtst.2024.12.003","DOIUrl":"10.1016/j.ijtst.2024.12.003","url":null,"abstract":"<div><div>The railway network is increasingly becoming central to socio-economic development and the decarbonisation of transport, supporting its growth in compliance with the emission reduction targets set by the 2050 European Green Deal. Thus, several programmes for the major network renewals and the construction of safe, resilient, and efficient high-speed (HS) lines have been implemented. In this scenario, some construction solutions have been introduced to enhance the durability and functionality of the railway infrastructure, particularly for the ballasted track one. Among these design techniques, the asphalt or bituminous sub-ballast has emerged as a proven technology capable of improving the railway performance and durability. Derived from the road construction approach, asphalt sub-ballast has been used in the European HS and high-capacity (HC) lines since the 1970s, providing both structural and functional benefits. This article offers a critical review of the current knowledge on the asphalt sub-ballast applications, highlighting its technical characteristics and long-term performances. Functional, structural, and economic advantages have been assessed and analyzed based on laboratory scale and on-field experiences. Experimental data indeed confirm the effectiveness of asphalt sub-ballast in improving the track stability and load distribution, in providing better water drainage and in reducing fatigue induced phenomena. These enhanced properties lead to lower maintenance costs and operations, particularly those related to ballast tamping, as well as to an extended service life of the whole infrastructure. From the circular economy perspective, the re-use or recycle of wastes and by-products in these mixes amplifies the cost-benefit ratio, also improving their sustainability.</div></div>","PeriodicalId":52282,"journal":{"name":"International Journal of Transportation Science and Technology","volume":"20 ","pages":"Pages 285-299"},"PeriodicalIF":4.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Learning to search for parking like a human: a deep inverse reinforcement learning approach 学习像人类一样寻找停车位：一种深度逆强化学习方法

IF 4.8

International Journal of Transportation Science and Technology Pub Date : 2025-12-01 Epub Date: 2024-12-04 DOI: 10.1016/j.ijtst.2024.11.007

Shiyu Wang , Haiyan Yang , Yijia Tang , Jing Chen , Cong Zhao , Yuchuan Du

{"title":"Learning to search for parking like a human: a deep inverse reinforcement learning approach","authors":"Shiyu Wang , Haiyan Yang , Yijia Tang , Jing Chen , Cong Zhao , Yuchuan Du","doi":"10.1016/j.ijtst.2024.11.007","DOIUrl":"10.1016/j.ijtst.2024.11.007","url":null,"abstract":"<div><div>The prevalence of on-street parking search in urban downtown areas has led to significant externalities such as congestion, pollution, and collisions. Understanding the intricacies of parking search behavior is crucial for developing effective management strategies to mitigate these issues. Parking search is inherently a complex, sequential decision-making process, influenced by diverse driver preferences and dynamic urban environments. This study introduces a deep inverse reinforcement learning (DIRL) approach to model drivers’ parking search behavior. First, we constructed a high-fidelity parking simulation platform using Unity3D to replicate an urban road network, enabling the collection of 987 valid trajectories. We modeled the parking search process as a Markov decision process (MDP), with meticulously designed state-action pairs for accurate representation. Then, a maximum entropy-based DIRL model was developed to learn the reward function and search-for-parking policies of drivers. The experimental results demonstrate that the maximum entropy DIRL model significantly outperforms the traditional maximum entropy inverse reinforcement learning model, achieving a 19.0% improvement in accurately capturing final parking states and a 13.5% enhancement in characterizing overall trajectory distributions. Finally, we integrated these trained models into traditional traffic simulation systems to effectively observe the traffic state evolution with different parking search behaviors, providing valuable insights for optimizing urban traffic management strategies.</div></div>","PeriodicalId":52282,"journal":{"name":"International Journal of Transportation Science and Technology","volume":"20 ","pages":"Pages 204-217"},"PeriodicalIF":4.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Are you ready? Understanding the intention to use highly automated on-demand vehicles while considering technology readiness and environmental drive 你准备好了吗？了解使用高度自动化按需车辆的意图，同时考虑技术准备和环境驱动

IF 4.8

International Journal of Transportation Science and Technology Pub Date : 2025-12-01 Epub Date: 2024-12-03 DOI: 10.1016/j.ijtst.2024.11.006

Eva Gößwein , Dieter Schramm , Magnus Liebherr

{"title":"Are you ready? Understanding the intention to use highly automated on-demand vehicles while considering technology readiness and environmental drive","authors":"Eva Gößwein , Dieter Schramm , Magnus Liebherr","doi":"10.1016/j.ijtst.2024.11.006","DOIUrl":"10.1016/j.ijtst.2024.11.006","url":null,"abstract":"<div><div>Highly automated vehicles represent a potentially disruptive technology, with uncertainties about their successful integration into existing transport systems. This study explores psychological factors influencing the intention to use highly automated on-demand vehicles (AODs). We build on the theory of planned behavior (TPB), enhancing the model by incorporating key technological and environmental constructs of AODs. Structural equation modeling with latent variables is used to investigate potential shifts in travel mode choice. The theoretically derived model is tested within a sample of 214 individuals (151 women, 61 men, and 2 diverse). After excluding the variable perceived behavioral control (PBC), the adjusted model demonstrates excellent model fit indices (comparative fit index is 0.99) and accounts for 61.2 % of the variance in the Intention to Use AODs. These results suggest that the intention to use AODs can be explained by the orientation towards AODs (including technology readiness motivators) and the subjective norm (including environmental concern), but not by PBC. Our findings align with current literature and stress the importance of including psychological factors when investigating the possible uptake of a new transportation technology.</div></div>","PeriodicalId":52282,"journal":{"name":"International Journal of Transportation Science and Technology","volume":"20 ","pages":"Pages 193-203"},"PeriodicalIF":4.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pedestrian crossing behaviors at signalized intersections in Utah: factors affecting spatial and temporal violations 犹他州信号交叉口行人过马路行为：时空违规影响因素

IF 4.8

International Journal of Transportation Science and Technology Pub Date : 2025-12-01 Epub Date: 2025-01-06 DOI: 10.1016/j.ijtst.2024.12.005

Amir Rafe, Patrick A. Singleton, Sadie Boyer, Michelle Mekker

{"title":"Pedestrian crossing behaviors at signalized intersections in Utah: factors affecting spatial and temporal violations","authors":"Amir Rafe, Patrick A. Singleton, Sadie Boyer, Michelle Mekker","doi":"10.1016/j.ijtst.2024.12.005","DOIUrl":"10.1016/j.ijtst.2024.12.005","url":null,"abstract":"<div><div>This study investigates pedestrian crossing behaviors at signalized intersections, focusing on spatial and temporal violations. Using a comprehensive dataset comprising 5 589 pedestrian crossing events at 47 crosswalks across 39 intersections in Utah, the research employs multilevel regression models to identify the factors influencing these violation behaviors. Key findings indicate that individual characteristics such as gender and mobility device use, environmental conditions including temperature and time-of-day and social dynamics such as the presence of other pedestrians significantly impact violation behaviors. The study reveals that female-presenting pedestrians and those using mobility devices are generally more compliant, while higher temperatures and specific times-of-day are associated with increased violation rates. The analysis also highlights that longer waiting time is linked to a reduced likelihood of violations, and that social dynamics play a crucial role, with the presence of other pedestrians discouraging violations. Additionally, neighborhoods with larger shares of Hispanic or non-white populations have higher violation rates, and mid-block crossings see more temporal violations. These findings aim to enhance pedestrian safety and compliance at signalized intersections, ultimately reducing pedestrian fatalities and injuries.</div></div>","PeriodicalId":52282,"journal":{"name":"International Journal of Transportation Science and Technology","volume":"20 ","pages":"Pages 321-335"},"PeriodicalIF":4.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Event-triggered prescribed-time control for vehicular platoon systems with unknown disturbances 具有未知干扰的车辆排系统的事件触发规定时间控制

IF 4.8

International Journal of Transportation Science and Technology Pub Date : 2025-12-01 Epub Date: 2024-11-19 DOI: 10.1016/j.ijtst.2024.11.003

Yang Li, Yangzhou Chen, Shanglin Li

{"title":"Event-triggered prescribed-time control for vehicular platoon systems with unknown disturbances","authors":"Yang Li, Yangzhou Chen, Shanglin Li","doi":"10.1016/j.ijtst.2024.11.003","DOIUrl":"10.1016/j.ijtst.2024.11.003","url":null,"abstract":"<div><div>An event-triggered prescribed-time control scheme is proposed for vehicular platoon systems (VPSs) subject to parameter uncertainties, unknown external disturbances, and actuator saturation. By utilizing the time-scaling method and the finite-time stable theory, we transform the prescribed-time stability problem of the VPSs in finite time domain into the asymptotic stability problem in infinite time domain. On the basis of this, this work proposes a nonlinear prescribed-time disturbance observer for each follower vehicle, which can accurately estimate unknown lumped disturbance within a prescribed settling time. Then, a novel event-triggered prescribed-time control scheme is designed for the VPSs, which combines back-stepping technology and time-scaling method. This scheme simultaneously addresses the issues of ensuring the convergence of tracking errors within the prescribed settling time and reducing wastage of communication resources. Moreover, the proposed scheme ensures the stability of the closed-loop system within the prescribed settling time, while guaranteeing the tracking performance of the VPSs. The settling time is not affected by the initial states of the systems and the parameters of the controllers. Finally, the effectiveness of the proposed control method is confirmed through numerical simulations.</div></div>","PeriodicalId":52282,"journal":{"name":"International Journal of Transportation Science and Technology","volume":"20 ","pages":"Pages 140-156"},"PeriodicalIF":4.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0