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Improving operations strategies at busy taxi stands: An analytical approach 改善繁忙的士站的营运策略:分析方法
IF 8.8 1区 工程技术 Q1 ECONOMICS Pub Date : 2026-05-01 Epub Date: 2026-02-12 DOI: 10.1016/j.tre.2026.104729
Xi Lin , Fang He , Meng Li , Xindi Tang , Chengyu Du
At busy terminal taxi stands, passengers and taxi drivers frequently experience prolonged waiting times due to congestion and inefficient matching processes. This study develops micro-level analytical models specifically tailored to capture the stochastic passenger boarding process and on-site operational controls, including passenger admission batch sizes and taxi stop-line positioning, using Markov chain and probability theory. We primarily analyze two representative operational scenarios: one characterized by a single long queue (typically of taxis) and another involving simultaneous congestion in both taxi and passenger queues. Both analytical and numerical results indicate that simple changes can result in substantial reductions in passenger waiting times and improvements in taxi outflow. The analytical framework is further extended to scenarios permitting spatial redesign or new boarding points, thereby broadening its applicability to diverse operating conditions. We further conduct time-of-day simulations with time-varying passenger and taxi arrivals to examine how the proposed strategies enhance the experiences of both passengers and taxi drivers in more realistic operating environments. The proposed strategies are rigorously validated through extensive numerical simulations and calibration with empirical data, highlighting significant real-world efficiency improvements and practical viability.
在繁忙的客运大楼的士站,由于挤塞及配对程序效率低下,乘客和司机经常需要长时间等候。本研究利用马尔可夫链和概率论,开发了微观层面的分析模型,专门用于捕捉随机乘客上车过程和现场操作控制,包括乘客入场批量和出租车停站线定位。我们主要分析了两种具有代表性的操作场景:一种是单一的长队列(通常是出租车),另一种是出租车和乘客队列同时出现拥堵。分析和数值结果都表明,简单的改变可以大大减少乘客等待时间,改善出租车外流。分析框架进一步扩展到允许空间重新设计或新的登机点的场景,从而扩大其适用于不同的操作条件。我们进一步进行了随时间变化的乘客和出租车到达时间的模拟,以研究建议的策略如何在更现实的操作环境中提高乘客和出租车司机的体验。通过广泛的数值模拟和经验数据校准,严格验证了所提出的策略,突出了显着的现实世界效率提高和实际可行性。
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引用次数: 0
Technological Upgrading Investment and Encroachment Strategies in an Outsourcing Supply Chain with Licensing 许可外包供应链中的技术升级投资与入侵策略
IF 8.8 1区 工程技术 Q1 ECONOMICS Pub Date : 2026-05-01 Epub Date: 2026-02-14 DOI: 10.1016/j.tre.2026.104725
Xueli Ma , Na Wang , Qingguo Bai
This paper deals with technological upgrading investment, encroachment and technology licensing in a supply chain comprised of an original equipment manufacturer (OEM) and a contract manufacturer (CM), in which the OEM is a quality and quantity leader. We characterize the equilibrium strategies of the OEM and the CM in five scenarios. By comparing the equilibrium outcomes in different scenarios, we examine the interactions between the OEM’s technological upgrading investment and the CM’s encroachment strategies considering royalty-based technology licensing between them. Our analysis demonstrates that neither the OEM’s technological upgrading investment nor royalty charges can effectively prevent the CM from encroaching downstream market. Conversely, the CM’s encroachment increases the OEM’s incentive to make technological upgrading investment for the CM. We further prove that win–win situation can be achieved in situations involving investment and encroachment. This paper breaks the traditional notion that low substitution degree is always preferable for the OEM or the CM and demonstrates that win–win situation is only available when market advantage is not weak. We also show that there always exist suboptimal strategies for the CM and the OEM when win–win situation is not available and analyze the effects of substitution degree, market advantage and brand advantage on the shift of win–win situation or suboptimal strategies. Furthermore, we consider two extended models: a sequential game where the CM acts as a first-mover, and a simultaneous quantity competition game. We characterize the conditions to achieve win–win situation in different models.
本文研究了由原始设备制造商(OEM)和合同制造商(CM)组成的供应链中技术升级投资、入侵和技术许可的问题,其中OEM是质量和数量领先者。我们在五种情况下描述了OEM和CM的均衡策略。通过比较不同情景下的均衡结果,我们考察了主机厂技术升级投资与主机厂入侵策略之间的相互作用,并考虑了主机厂与主机厂之间基于特许权使用费的技术许可。我们的分析表明,无论是OEM的技术升级投资还是特许权使用费都不能有效地阻止CM蚕食下游市场。反之,厂商的侵占增加了OEM为厂商进行技术升级投资的动机。我们进一步证明,在涉及投资和侵占的情况下,可以实现双赢。本文打破了代工或代工的替代程度越低越有利的传统观念,论证了只有在市场优势不弱的情况下才能实现共赢。研究还表明,在无法实现双赢的情况下,代工和代工总是存在次优策略,并分析了替代程度、市场优势和品牌优势对双赢或次优策略转移的影响。此外,我们考虑了两个扩展模型:一个是连续博弈,其中CM作为先发者,另一个是同时数量竞争博弈。我们在不同的模式中描述了实现双赢的条件。
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引用次数: 0
Shipping service design for wind-assisted ships 风助船舶船舶服务设计
IF 8.8 1区 工程技术 Q1 ECONOMICS Pub Date : 2026-05-01 Epub Date: 2026-02-03 DOI: 10.1016/j.tre.2026.104720
Shuanglu Zhang, Xiuwen Wang, Lu Zhen
Wind-assisted propulsion systems (WAPS) have emerged as a promising technology in the shipping industry. The utilization of wind energy can provide auxiliary thrust and hence reduce the fuel consumption as well as carbon emissions of wind-assisted ships. However, the rigid structure of a traditional shipping service is often suboptimal for harnessing wind energy effectively. This paper explores a shipping service design problem for wind-assisted ships, which is formulated as a two-stage stochastic mixed-integer programming model. The first-stage decisions determine the optimal port visit sequence of all ports, while the second-stage decisions adapt the ship’s schedule under a set of wind scenarios to minimize expected total voyage costs, including fuel, operational, and delay-related expenses. A Benders decomposition algorithm is utilized to solve the stochastic model. The model is applied to a realistic trans-Pacific case study. The results of a comparative analysis against a conventional shipping case indicate the superiority of wind-assisted ships in reducing both costs and carbon emissions. Furthermore, a comprehensive sensitivity analysis reveals that the economic advantage of the integration of WAPS technology and stochastic optimization is robust, providing shipping companies with a practical and profitable strategy towards sustainable operations.
风辅助推进系统(WAPS)在航运业中已经成为一项很有前途的技术。风能的利用可以提供辅助推力,从而降低风助船舶的燃料消耗和碳排放。然而,传统航运服务的刚性结构往往不是有效利用风能的最佳选择。本文研究了风助船舶的船舶服务设计问题,将其表述为一个两阶段随机混合整数规划模型。第一阶段的决策确定所有港口的最佳港口访问顺序,而第二阶段的决策在一组风情景下调整船舶的时间表,以最小化预期的总航行成本,包括燃料、操作和延误相关费用。采用Benders分解算法求解随机模型。该模型应用于一个现实的跨太平洋案例研究。与传统船舶案例的对比分析结果表明,风助船舶在降低成本和碳排放方面具有优势。此外,综合敏感性分析表明,将WAPS技术与随机优化相结合的经济优势是稳健的,为航运公司的可持续运营提供了切实可行的盈利策略。
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引用次数: 0
Resilient RoRo fleet scheduling for mixed EV and ICEV transport demand: An optimization framework for EV dedicated service strategy 电动汽车和电动汽车混合运输需求的弹性滚装机队调度:电动汽车专用服务策略的优化框架
IF 8.8 1区 工程技术 Q1 ECONOMICS Pub Date : 2026-05-01 Epub Date: 2026-02-03 DOI: 10.1016/j.tre.2026.104719
Yukuan Wang , Ryan Wen Liu , Jingxian Liu , Lichao Yang , Yang Liu , Miquel Angel Piera Eroles
The surge in electric vehicles (EVs) is causing a structural disruption to high-density, short-sea Roll-on/Roll-off (RoRo) transportation, driven by stricter safety regulations and unique transport protocols. Operators like those in China’s Qiongzhou Strait have implemented an ‘EV Dedicated Service’ (EVDS) strategy. This strategy involves a complex coordination problem between dedicated EV-carrying vessels and separate vessels for transporting drivers. However, this emerging scheduling paradigm has been insufficiently studied. This paper proposes a multi-objective mixed integer programming model for the RoRo fleet scheduling with a novel methodological approach to formulate EVDS mechanism. Additionally, we develop an Adaptive Large Neighborhood Search − based heuristic algorithm, featuring novel problem-specific neighborhood structures. Realistic instances validated the algorithm’s performance against benchmark methods. The results also revealed the balance between economic efficiency and service levels across three different demand scenarios (Low-Season, Normal-Day, and Peak-Season). Furthermore, the analysis reveals the strategic value of flexible deployment for EV-certified vessels. We also introduce a method to quantify operational resilience by analyzing the impact of elastic capacity planning on alleviating port congestion. The findings provide a robust decision-support framework for RoRo operators and policymakers navigating the surge in EV transport demand.
在更严格的安全法规和独特的运输协议的推动下,电动汽车(ev)的激增正在对高密度、短海上滚装(RoRo)运输造成结构性破坏。琼州海峡的运营商已经实施了“电动汽车专用服务”(EVDS)战略。这一策略涉及到专用电动汽车运输船和单独运输司机的船只之间复杂的协调问题。然而,这一新兴的调度范式还没有得到充分的研究。本文提出了滚装机队调度的多目标混合整数规划模型,并提出了一种新的EVDS机制制定方法。此外,我们开发了一种基于自适应大邻域搜索的启发式算法,该算法具有新颖的问题特定邻域结构。实际实例验证了该算法与基准方法的性能。结果还揭示了三种不同需求情景(淡季、正常日和旺季)的经济效率和服务水平之间的平衡。此外,分析还揭示了电动汽车认证船舶灵活部署的战略价值。通过分析弹性容量规划对缓解港口拥堵的影响,提出了一种量化运营弹性的方法。研究结果为滚装运营商和政策制定者提供了强有力的决策支持框架,以应对电动汽车运输需求的激增。
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引用次数: 0
A carbon reduction incentive model for crowdsourced urban freight: Facilitating freight pooling and electric truck adoption 众包城市货运的碳减排激励模型:促进货运池和电动卡车的采用
IF 8.8 1区 工程技术 Q1 ECONOMICS Pub Date : 2026-05-01 Epub Date: 2026-02-02 DOI: 10.1016/j.tre.2026.104712
Siqi Shu , Xinyue Yang , Zhuang Ming , Xiaoxiang Na , Marc E.J. Stettler , Der-Horng Lee , Simon Hu
Urban freight transport faces significant decarbonization pressure, yet existing strategies such as freight pooling and electric truck adoption often struggle with limited uptake due to operational complexities, costs, and infrastructure challenges. Critically, current research lacks an integrated, operational incentive framework specifically designed for multi-stakeholder participation in urban crowdsourced logistics, where task-level operational decisions across multiple stakeholders play a central role in system-level carbon reduction. This study introduces a Carbon Reduction Incentive Model (CRIM) that addresses this gap. The CRIM incentivizes individual shippers and independent carriers within a crowdsourced logistics system by assigning task-level rewards for freight pooling and electric truck usage. Rewards are quantified by tonne-kilometer savings relative to conventional individual diesel deliveries, further adjusted by a time-based factor to encourage off-peak operations. The CRIM is embedded within an enhanced pick-up and delivery model that explicitly accounts for stakeholder cost components, vehicle heterogeneity, charging requirements, and time-sensitive feasibility (PDPTW-HEC). To optimize the system’s complex trade-off between costs and carbon emissions, a customized heuristic algorithm is developed. Scenario-based case studies using real-world data and international carbon accounting standards validate the proposed incentive model’s performance. Results demonstrate that CRIM can achieve 9.5–38.1% higher electric truck adoption and an 8.4–28.7% reduction in total carbon emissions. This framework offers a practical and scalable approach for designing and evaluating task-level carbon reduction incentives in urban freight operations.
城市货运面临着巨大的脱碳压力,但由于运营复杂性、成本和基础设施方面的挑战,现有的战略,如货运池和电动卡车的采用,往往难以得到有限的应用。关键的是,目前的研究缺乏一个专门为城市众包物流中的多利益相关者参与而设计的综合的运营激励框架,在城市众包物流中,跨多个利益相关者的任务级运营决策在系统级碳减排中发挥着核心作用。本研究引入了碳减排激励模型(CRIM)来解决这一差距。CRIM通过为货运池和电动卡车的使用分配任务级奖励,在众包物流系统中激励个体托运人和独立承运人。奖励是通过与传统的单个柴油交付相比节省的吨公里来量化的,并通过基于时间的因素进一步调整,以鼓励非高峰运营。CRIM嵌入在增强型取货和交付模型中,该模型明确考虑了利益相关者的成本组成、车辆异质性、充电要求和时间敏感性可行性(PDPTW-HEC)。为了优化系统成本和碳排放之间的复杂权衡,开发了一种定制的启发式算法。使用真实世界数据和国际碳会计标准的基于场景的案例研究验证了所提出的激励模型的性能。结果表明,CRIM可以使电动卡车采用率提高9.5-38.1%,总碳排放量减少8.4-28.7%。该框架为设计和评估城市货运业务中任务级碳减排激励措施提供了一种实用且可扩展的方法。
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引用次数: 0
Simulation-based optimization of yard slot allocation in U-shaped container terminals 基于仿真的u型集装箱码头堆场槽位分配优化
IF 8.8 1区 工程技术 Q1 ECONOMICS Pub Date : 2026-05-01 Epub Date: 2026-02-09 DOI: 10.1016/j.tre.2026.104739
Junkai Zhang, Kap Hwan Kim, Ningning Song, Xuehao Feng
The yard slot allocation problem (SAP), which concerns locating containers in the storage yard, could critically affect the performance of ports. The optimization of this problem is challenging due to the complex operational conditions and real-time decision requirement in practice. As a new type of layout, the U-shaped layout offers external and internal trucks (ETs and ITs) novel combinations of travel routes and container handover points that may result in unique characteristics for the SAP. This study addresses the SAP under the U-shaped layout to minimize the delay time of ITs and ETs. A novel simulation-based evaluation method considering multiple criteria is proposed to allocate slots for arriving containers. In this method, an evolving neural decision network (ENDN) is developed to explore the influence of real-time information on the weights of these criteria. We develop an efficient genetic algorithm tailored to optimize the parameters of the ENDN. A simulation model is developed to evaluate the algorithm’s performance under realistic operational uncertainties that may promote the practical implementation of the ENDN. The experimental results demonstrate that our method can determine slot allocations of shorter total vehicle delay time compared with existing methods.
堆场槽位分配问题(SAP)涉及到集装箱在堆场中的定位问题,对港口的性能有着重要的影响。由于实际操作条件的复杂性和对实时决策的要求,该问题的优化具有一定的挑战性。作为一种新型布局,u型布局为外部和内部卡车(ETs和ITs)提供了新颖的出行路线和集装箱交接点组合,从而使SAP具有独特的特征。本文研究了u型布局下的SAP,以最大限度地减少ITs和ETs的延误时间。提出了一种考虑多准则的基于仿真的集装箱到港槽分配方法。在该方法中,开发了一个进化神经决策网络(ENDN)来探索实时信息对这些标准权重的影响。我们开发了一种高效的遗传算法来优化ENDN的参数。建立了仿真模型,以评估该算法在实际操作不确定性下的性能,从而促进ENDN的实际实施。实验结果表明,与现有方法相比,该方法可以在较短的车辆总延迟时间内确定时段分配。
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引用次数: 0
A model for queuing toll policies incorporating cost-sharing characteristics of carpooling in the transportation network with capacity constraints 考虑容量限制下拼车成本分担特征的排队收费政策模型
IF 8.8 1区 工程技术 Q1 ECONOMICS Pub Date : 2026-05-01 Epub Date: 2026-02-03 DOI: 10.1016/j.tre.2026.104700
Yanqin Chen , Changxin Liao , Jia Yao , David Z.W. Wang , Anthony Chen
This paper introduces capacity constraints into a multi-modal transportation network, including solo driving, carpooling, and public transit, and proposes two queuing toll policies based on the cost-sharing characteristics of carpooling to eliminate physical queues. By incorporating traveler heterogeneity in the value of time, a multi-class user equilibrium model is developed to assess the impacts of capacity constraints and queuing toll policies on traffic equilibrium under three cases: 1) case 1, no tolls are charged to any travelers. Physical queues may occur on the saturated links; 2) case 2, the queuing tolls are charged exclusively to solo drivers, and it takes into account the scenario that the physical queues are not completely eliminated in the saturated link only with carpooling; 3) case 3, the queuing tolls are charged to solo drivers and carpooling travelers (i.e., carpooling drivers and riders). Then, an improved route swapping algorithm is proposed to solve the equilibrium model. Finally, numerical analysis based on the Winnipeg network is conducted to demonstrate the properties of the problem and the performance of the proposed model and algorithm. The results show that the proposed queuing toll policies can improve travel efficiency by encouraging carpooling and eliminating physical queues. Moreover, the differential impacts of the three cases on heterogeneous travelers’ mode choices and travel efficiency are explored. These findings provide a theoretical basis for the practical implementation of queuing toll policies.
本文将容量约束引入到包括单独驾驶、拼车和公共交通在内的多式联运网络中,并提出了两种基于拼车成本分担特性的排队收费政策,以消除物理排队。在时间价值中考虑出行者异质性的基础上,建立了一种多类别用户均衡模型,评估了三种情况下容量约束和排队收费政策对交通均衡的影响:1)情况1,不向任何出行者收取任何通行费。在饱和链路上可能出现物理队列;(2)情形2,排队费仅对单独司机收取,并考虑了仅拼车时饱和路段物理排队未完全消除的情况;(3)情形3,排队费向单独驾驶和拼车的旅客(即拼车司机和乘客)收取。然后,提出了一种改进的路由交换算法来求解均衡模型。最后,以Winnipeg网络为例进行了数值分析,验证了问题的性质以及所提模型和算法的性能。结果表明,本文提出的排队收费政策能够通过鼓励拼车和消除物理排队来提高出行效率。此外,还探讨了三种情况对异质性出行者出行方式选择和出行效率的差异影响。研究结果为排队收费政策的实际实施提供了理论依据。
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引用次数: 0
Hierarchical planning and scheduling for bulk ports via network flow and deep reinforcement learning-guided constraint programming 基于网络流和深度强化学习引导约束规划的大容量端口分层规划与调度
IF 8.8 1区 工程技术 Q1 ECONOMICS Pub Date : 2026-05-01 Epub Date: 2026-02-06 DOI: 10.1016/j.tre.2026.104714
Xuan Lu , Yu Zhang , Xuri Xin , Hang Yang , Huanhuan Li , Lanbo Zheng , Zaili Yang
In this research, an integrated inbound and outbound operational planning and scheduling problem is addressed for complex and large bulk ports. The practice of moving homogeneous dry bulk cargoes on a fixed terminal is changing as raw materials of different types are transported from/to the same terminals. It raises a new research challenge where unloading, stacking, reclaiming, conveying and loading operations must be coordinated to import/export blended products according to the tight specifications of customers. This paper aims to maximise resource utilisation and to satisfy demands as early as possible. The essence of the problem is to design the routing of product flows throughout the port logistics network such that supply and demand are matched optimally. This study presents a new framework that enables the modelling of the planning part as a multi-commodity flow problem and the scheduling part as a constraint programming (CP) problem. A novel dual-engine optimisation method that synergistically combines CP with deep reinforcement learning (DRL) is proposed to accelerate the scheduling phase. The method leverages DRL agents to fix key variables, thereby effectively accelerating the optimisation process of the CP solver. Comprehensive numerical experiments are conducted on real data sets as well as instances derived from real scenarios to validate the effectiveness of the proposed approach, demonstrating significant improvements in port scheduling efficiency. Additionally, strategic management analyses offer actionable insights to support decision-making in bulk port operations. The proposed methods provide a generalised methodology adaptable to a broad range of complex combinatorial optimisation problems in port logistics and beyond, paving the way for more intelligent and sustainable dry bulk port management.
在本研究中,针对复杂的大型散装港口,提出了一个综合的进出港作业计划与调度问题。随着不同类型的原材料从同一码头运输到同一码头,在固定码头运输均质干散货的做法正在发生变化。它提出了一个新的研究挑战,卸载、堆放、回收、输送和装载操作必须协调,以进出口混合产品,根据客户的严格规格。本文旨在最大限度地利用资源,尽早满足需求。问题的实质是在整个港口物流网络中设计产品流的路线,使供需最优匹配。本文提出了一种新的框架,将规划部分建模为多商品流问题,将调度部分建模为约束规划问题。提出了一种将CP与深度强化学习(DRL)协同结合的新型双引擎优化方法,以加速调度阶段。该方法利用DRL代理来固定关键变量,从而有效地加快了CP求解器的优化过程。在真实数据集和真实场景实例上进行了全面的数值实验,验证了所提方法的有效性,表明该方法显著提高了端口调度效率。此外,战略管理分析提供可操作的见解,以支持散装港口运营的决策。提出的方法提供了一种通用的方法,适用于港口物流及其他领域的广泛复杂组合优化问题,为更智能和可持续的干散货港口管理铺平了道路。
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引用次数: 0
Enabling the multi-LR ability of drones in the multi-visit truck-drone routing problem with pickup and delivery 在多访问卡车-无人机取货和送货路线问题中实现无人机的多lr能力
IF 8.8 1区 工程技术 Q1 ECONOMICS Pub Date : 2026-05-01 Epub Date: 2026-01-31 DOI: 10.1016/j.tre.2026.104678
Sepehr Pasha, S.Mehdi Sajadifar
The use of drones alongside trucks for parcel delivery has received considerable research attention, further stimulated by advancements in drone capacity and range that enhance operational viability relative to traditional methods. In this paper, we address a variant of the combined truck-drone routing problem, entailing multiple trucks collaborating with drones to meet the pickup and delivery demands of customers. In the proposed problem, drone energy consumption depends on the carried load; drones may serve multiple customers per flight, and each truck can launch and retrieve its drone multiple times at each customer node (multi-LR) to enhance overall utilization. We propose a mixed-integer linear programming model to minimize total cost, enhanced with problem-specific cuts, which are demonstrated through extensive computational experiments to effectively reduce runtime. The model includes flexible features that allow it to handle diverse operational constraints, such as restrictions on the number of flights performed and high-traffic areas. Given the complexity of the model, we develop an adapted algorithm from the literature, incorporating significant modifications along with a new acceleration strategy. The approach combines a maximum payload method in the first stage with an improved simulated annealing algorithm using problem-specific neighborhood operators in the second stage. Although our findings show that the multi-LR feature increases the number of flights performed, both the model and the adapted algorithm demonstrate its cost efficiency, achieving average transportation cost reductions of 14.51% compared to the system without multi-LR and 45.62% compared to the traditional truck-only system.
与卡车一起使用无人机进行包裹递送已经受到了相当多的研究关注,无人机容量和范围的进步进一步刺激了相对于传统方法的操作可行性。在本文中,我们解决了卡车-无人机联合路线问题的一个变体,需要多辆卡车与无人机合作来满足客户的取货和交付需求。在本文提出的问题中,无人机的能耗取决于所携带的载荷;无人机每次飞行可以服务多个客户,每辆卡车可以在每个客户节点(multi-LR)多次发射和取回无人机,以提高整体利用率。我们提出了一种混合整数线性规划模型,以最小化总成本,并通过大量的计算实验证明了该模型可以有效地减少运行时间。该模型包括灵活的功能,使其能够处理各种操作约束,例如对执行的航班数量和高流量区域的限制。考虑到模型的复杂性,我们从文献中开发了一种自适应算法,并结合了重大修改以及新的加速策略。该方法结合了第一阶段的最大有效载荷方法和第二阶段使用特定问题邻域算子的改进模拟退火算法。虽然我们的研究结果表明,多重lr特征增加了执行的航班数量,但模型和适应的算法都证明了其成本效率,与没有多重lr的系统相比,平均运输成本降低了14.51%,与传统的卡车系统相比,平均运输成本降低了45.62%。
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引用次数: 0
Assessing Markov property in driving behaviors: Insights from statistical tests 评估驾驶行为中的马尔可夫属性:来自统计测试的见解
IF 8.8 1区 工程技术 Q1 ECONOMICS Pub Date : 2026-05-01 Epub Date: 2026-02-14 DOI: 10.1016/j.tre.2026.104740
Zheng Li , Haoming Meng , Chengyuan Ma , Ke Ma , Xiaopeng Li
The Markov property serves as a foundational assumption in most existing work on vehicle driving behavior, positing that future states depend solely on the current state, not the series of preceding states. This study validates the Markov properties of vehicle trajectories for both Autonomous Vehicles (AVs) and Human-driven Vehicles (HVs). A statistical method used to test whether time series data exhibits Markov properties is applied to examine whether the trajectory data possesses Markov characteristics. Kolmogorov–Smirnov test and Brown–Forsythe test are additionally introduced to characterize the differences in Markov properties between AVs and HVs. Based on several public trajectory datasets, we investigate the presence and order of the Markov property of different types of vehicles through rigorous statistical tests. Our findings reveal that AV trajectories generally exhibit stronger Markov properties compared to HV trajectories, with a higher percentage conforming to the Markov property and lower Markov orders. In contrast, HV trajectories display greater variability and heterogeneity in decision-making processes, reflecting the complex perception and information processing involved in human driving. These results have significant implications for the development of driving behavior models, traffic flow models, and traffic simulation systems. Our study also demonstrates the feasibility of using statistical methods to test the presence of Markov properties in driving trajectory data.
马尔可夫属性在大多数现有的关于车辆驾驶行为的工作中都是一个基本假设,假设未来的状态仅取决于当前状态,而不是一系列之前的状态。本研究验证了自动驾驶汽车(AVs)和人类驾驶汽车(HVs)车辆轨迹的马尔可夫特性。应用一种用于检验时间序列数据是否具有马尔可夫特性的统计方法来检验轨迹数据是否具有马尔可夫特性。此外,还引入Kolmogorov-Smirnov检验和Brown-Forsythe检验来表征av和HVs在马尔可夫性质上的差异。基于几个公共轨迹数据集,通过严格的统计检验,研究了不同类型车辆的马尔可夫性的存在性和顺序。我们的研究结果表明,与HV轨迹相比,AV轨迹通常表现出更强的马尔可夫性质,符合马尔可夫性质的百分比更高,马尔可夫阶数更低。相比之下,HV轨迹在决策过程中表现出更大的变异性和异质性,反映了人类驾驶过程中涉及的复杂感知和信息处理。这些结果对驾驶行为模型、交通流模型和交通仿真系统的发展具有重要意义。我们的研究还证明了使用统计方法来测试驾驶轨迹数据中马尔可夫属性存在的可行性。
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引用次数: 0
期刊
Transportation Research Part E-Logistics and Transportation Review
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