@article{MTMT:34443862, title = {Application of the Theory of Absorbing Markov Processes, for Estimating the Load of Road Sections and Charging Stations, for Electric Car Transport}, url = {https://m2.mtmt.hu/api/publication/34443862}, author = {Hanka, László}, doi = {10.12700/APH.21.4.2024.4.5}, journal-iso = {ACTA POLYTECH HUNG}, journal = {ACTA POLYTECHNICA HUNGARICA}, volume = {21}, unique-id = {34443862}, issn = {1785-8860}, abstract = {Due to the short range of pure electric vehicles, considering a long trip, the number and the locations of electric charging stations, especially the distance between consecutive charging stations, is a basic question, because the discharged battery must be recharged quite frequently. Today, the network of electric charging stations is unsatisfactory. During the construction of new and expansion of existing networks, the load of roads and the utilization of existing or imagined charging stations must be taken into account. For the estimation of these features, a perfect mathematical tool, is the theory of absorbing Markovchains. In this article a possible mathematical model, using Markov-chains, extended by the logit regression model will be presented.}, keywords = {Logistic model; charging station; electric car; absorbing Markov process}, year = {2024}, eissn = {1785-8860}, pages = {87-104} } @article{MTMT:34150743, title = {Urban Platooning Combined with Dynamic Traffic Lights}, url = {https://m2.mtmt.hu/api/publication/34150743}, author = {Altamimi, Husam and Varga, István and Tettamanti, Tamás}, doi = {10.3390/machines11090920}, journal-iso = {MACHINES}, journal = {MACHINES}, volume = {11}, unique-id = {34150743}, abstract = {Platooning is generally known as a control method for driving a group of connected and automated vehicles in motorway context. Nevertheless, platoon control might also work on urban roads. One possible strategy to increase overall road traffic performance and to reduce congestion in urban traffic networks is to combine platooning with traffic signal control at intersections. The traffic flow can be maximized with coordinated scheduling of traffic signals together with platooning activities, resulting in decreased travel times and fuel consumption. This paper investigates several aspects of this combined control, such as the procedures for coordination and communication between platooning vehicles and traffic signals. Efficient algorithms are suggested to optimize platoon formation and dissolution at junctions and to change traffic signal phases depending on platoon arrival and departure times. The proposed solutions have been tested and verified with SUMO, a high-fidelity microscopic traffic simulator.}, keywords = {Platooning; Urban traffic control; dynamic traffic light; urban platooning; SUMO traffic simulation}, year = {2023}, eissn = {2075-1702}, orcid-numbers = {Varga, István/0000-0002-5727-9415; Tettamanti, Tamás/0000-0002-8934-3653} } @article{MTMT:34140371, title = {Research on the SSIDM Modeling Mechanism for Equivalent Driver’s Behavior}, url = {https://m2.mtmt.hu/api/publication/34140371}, author = {Fang, Rui}, doi = {10.3390/wevj14090242}, journal-iso = {WORLD ELECTR VEH J}, journal = {WORLD ELECTRIC VEHICLE JOURNAL}, volume = {14}, unique-id = {34140371}, abstract = {To solve the problem of smooth switching between the car-following model and lane-changing model, the Intelligent Driver Model (IDM) for a single lane was used to study the driver’s behavior switching mechanism of normally following, generating intentions to change lanes, creating space and speed gains, and performing lane change. In the case of sufficient lane-changing space and speed gains, the ego vehicle’s intention to change lanes was considered to solve the switching boundary between car-following behavior and lane-changing behavior, which is also the IDM failure point. In the event that there are no lane-changing gains, the IDM was optimized by incorporating the constraint components of the target lane vehicles in conjunction with the actual motion state of the ego vehicle, and the Stepless Switching Intelligent Driver Model (SSIDM) was constructed. Drivers’ natural driving information was collected, and scenario mining was performed on structured roads. On the basis of the collected data, an elliptic equation was used to fit the behavior switching boundary, and the two component balance coefficients of the front and rear vehicles on the target lane were identified. According to the test set verification results, the Mean Square Error (MSE) of the SSIDM is 2.172, which is 57.98% less than that of the conventional single-lane IDM. The SSIDM can accomplish stepless switching comparable to the driver’s behavior between the car-following behavior and the lane-changing behavior, with greater precision than IDM. This research can provide theoretical support for the construction of the point-to-point driving model and the development of L2+ autonomous driving functions. It can provide assistance for the landing and application of full-behavior and full-scene autonomous driving.}, year = {2023}, eissn = {2032-6653} } @article{MTMT:34146893, title = {Assisting the passage of heavy vehicles, increasing traffic safety designing traffic lights and urban lighting in a smart city}, url = {https://m2.mtmt.hu/api/publication/34146893}, author = {Fecser, Nikolett}, doi = {10.1504/IJHVS.2023.10059062}, journal-iso = {INT J HEAVY VEH SYST}, journal = {INTERNATIONAL JOURNAL OF HEAVY VEHICLE SYSTEMS}, volume = {30}, unique-id = {34146893}, issn = {1744-232X}, year = {2023}, eissn = {1741-5152}, pages = {1-17}, orcid-numbers = {Fecser, Nikolett/0000-0001-6795-9409} } @article{MTMT:33831491, title = {Vehicle Automation Impact on Traffic Flow and Stability: A Review of Literature}, url = {https://m2.mtmt.hu/api/publication/33831491}, author = {Mohammed, Dilshad and Horváth, Balázs}, doi = {10.12700/APH.20.5.2023.5.9}, journal-iso = {ACTA POLYTECH HUNG}, journal = {ACTA POLYTECHNICA HUNGARICA}, volume = {20}, unique-id = {33831491}, issn = {1785-8860}, year = {2023}, eissn = {1785-8860}, pages = {129-148}, orcid-numbers = {Horváth, Balázs/0000-0002-1520-8731} } @article{MTMT:33692407, title = {Adaptive Headway Control Algorithm for Mixed-Traffic Stabilization and Optimization with Automated Cars and Trucks}, url = {https://m2.mtmt.hu/api/publication/33692407}, author = {Xiao, Xiao and Zhang, Yunlong and Wang, Xiubin B. and Guo, Xiaoyu}, doi = {10.1177/03611981231156587}, journal-iso = {TRANSPORT RES REC}, journal = {TRANSPORTATION RESEARCH RECORD}, volume = {2023}, unique-id = {33692407}, issn = {0361-1981}, abstract = {Automated vehicle (AV) technology provides an opportunity to increase capacity and reduce congestion while maintaining stability and flow rate by allowing AVs to control their movements using references such as vehicle headways. Studies have been conducted on advancing the control algorithm of automated cars, and recent research has focused on different AV market penetration ratios. However, a straightforward way to control AVs using model parameters considering different AV types (i.e., cars and trucks) has seldom been both investigated and implemented. A method is developed to show the feasibility of controlling AVs using the desired headway as a variable to ensure stability and satisfy demand. The proposed adaptive headway control method for automated vehicles can stabilize flow and optimize flow rate in a mixed-traffic environment with four vehicle types: (1) AV cars, (2) non-AV cars, (3) AV trucks, and (4) non-AV trucks. At various AV market penetration ratios and truck percentages, the relationship between AV headways and stability is investigated. The model is implemented and tested in a simulation environment based on real-time interactions of the External Driver Model and VISSIM. Numerical analyses demonstrate that if the truck percentage is 80% or less, traffic is stable with the proposed control algorithm. The proposed algorithm is evaluated in microscopic simulation. Compared with the baseline case with no headway control, the proposed adaptive headway control algorithm can lead to less oscillation in traffic flow and can also reduce the delay by 23.19% while increasing the average travel speed up to 9.09%.}, year = {2023}, eissn = {2169-4052}, orcid-numbers = {Xiao, Xiao/0000-0002-1911-3449; Guo, Xiaoyu/0000-0002-0401-5723} } @article{MTMT:32646069, title = {Scientific Research Review on Dependability of Complex Automotive Systems Developed towards Autonomous Driving}, url = {https://m2.mtmt.hu/api/publication/32646069}, author = {Lázár-Fülep, Tímea}, doi = {10.3311/PPtr.16745}, journal-iso = {PERIOD POLYTECH TRANSP ENG}, journal = {PERIODICA POLYTECHNICA TRANSPORTATION ENGINEERING}, volume = {50}, unique-id = {32646069}, issn = {0303-7800}, year = {2022}, eissn = {1587-3811}, pages = {142-145} } @inproceedings{MTMT:33219807, title = {Időben változó kapcsolatú rendszerek strukturális gráfvizsgálata}, url = {https://m2.mtmt.hu/api/publication/33219807}, author = {Pokorádi, László}, booktitle = {XVI. Innováció és Fenntartható Felszíni Közlekedés Konferencia (IFFK 2022)}, unique-id = {33219807}, year = {2022}, pages = {1-5}, orcid-numbers = {Pokorádi, László/0000-0003-2857-1887} } @article{MTMT:32822924, title = {Monte-Carlo Simulation-Based Accessibility Analysis of Temporal Systems}, url = {https://m2.mtmt.hu/api/publication/32822924}, author = {Pokorádi, László}, doi = {10.3390/sym14050983}, journal-iso = {SYMMETRY-BASEL}, journal = {SYMMETRY (BASEL)}, volume = {14}, unique-id = {32822924}, abstract = {Temporal networks and network-structured systems are gaining ground in daily life. Such net-works are Vehicular Ad-hoc NETworks (VANET) and Mobile Ad-hoc NETworks (MANET), in fact, Industry 4.0 requires similar local networks. During mathematical model-based analysis of real temporal systems, it is vital to determine the existence and frequency of accessibility between components. Graph theory is a well-known mathematical tool used for studying accessibility of network components. In previous publications, the author proposed an easy-usable algorithm for determining the existence of interconnection between system-components. The Monte-Carlo Simulation can model the temporality of systems. The aim of this paper is to propose a Monte-Carlo Simulation-based method that estimates symmetry or asymmetry and the frequency of accessibilities between the components of temporal network-structured systems.}, year = {2022}, eissn = {2073-8994}, orcid-numbers = {Pokorádi, László/0000-0003-2857-1887} } @article{MTMT:33300785, title = {Nature-Inspired Cloud–Crowd Computing for Intelligent Transportation System}, url = {https://m2.mtmt.hu/api/publication/33300785}, author = {Singh, Vandana and Sahana, Sudip Kumar and Bhattacharjee, Vandana}, doi = {10.3390/su142316322}, journal-iso = {SUSTAINABILITY-BASEL}, journal = {SUSTAINABILITY}, volume = {14}, unique-id = {33300785}, abstract = {Nowadays, it is crucial to have effective road traffic signal timing, especially in an ideal traffic light cycle. This problem can be resolved with modern technologies such as artificial intelligence, cloud and crowd computing. We hereby present a functional model named Cloud–Crowd Computing-based Intelligent Transportation System (CCCITS). This model aims to organize traffic by changing the phase of traffic lights in real-time based on road conditions and incidental crowdsourcing sentiment. Crowd computing is responsible for fine-tuning the system with feedback. In contrast, the cloud is responsible for the computation, which can use AI to secure efficient and effective paths for users. As a result of its installation, traffic management becomes more efficient, and traffic lights change dynamically depending on the traffic volume at the junction. The cloud medium collects updates about mishaps through the crowd computing system and incorporates updates to refine the model. It is observed that nature-inspired algorithms are very useful in solving complex transportation problems and can deal with NP-hard situations efficiently. To establish the feasibility of CCCITS, the SUMO simulation environment was used with nature-inspired algorithms (NIA), namely, Particle Swarm Optimization (PSO), Ant Colony Optimization and Genetic Algorithm (GA), and found satisfactory results.}, year = {2022}, eissn = {2071-1050}, orcid-numbers = {Sahana, Sudip Kumar/0000-0002-2493-3695} } @article{MTMT:33064173, title = {The Laboratory Intelligent Management System Using NB-IoT and Artificial Intelligence Technology}, url = {https://m2.mtmt.hu/api/publication/33064173}, author = {Zhang, Fang and Wu, Jie and Wu, Faquan}, doi = {10.1155/2022/6574042}, journal-iso = {MATH PROBL ENG}, journal = {MATHEMATICAL PROBLEMS IN ENGINEERING}, volume = {2022}, unique-id = {33064173}, issn = {1024-123X}, abstract = {For the traditional laboratory manual management, there is a need for laboratory managers. The managers cannot keep abreast of the laboratory conditions, and forget to shut down and close the windows, causing waste of electricity and equipment damage. Based on NB-IoT and artificial intelligence, a laser intelligent management system is developed using technologies such as network communication, intranet, automatic control, artificial intelligence, and software. Through this system, administrators can grasp the situation of the laboratory in real time, realize the intelligent management of the laboratory, improve the scientific management of the laboratory, improve the work efficiency of laboratory technicians, and better play the laboratory as an important platform for scientific research training in colleges and universities. This paper aims to develop an intelligent laboratory management system based on NB-IoT and AI technology. Through this system, the manager can grasp the situation of the laboratory in real time, realize the intelligent management of the laboratory, and better play the role of the laboratory as an important platform for scientific research and talent training.}, year = {2022}, eissn = {1563-5147}, orcid-numbers = {Zhang, Fang/0000-0002-5052-0157; Wu, Faquan/0000-0002-2087-3752} } @inproceedings{MTMT:32064277, title = {Multi-criteria evaluation method for operating battery electric railcars}, url = {https://m2.mtmt.hu/api/publication/32064277}, author = {Fetter, Marcell and Csonka, Bálint}, booktitle = {2021 Smart City Symposium Prague (SCSP)}, doi = {10.1109/SCSP52043.2021.9447375}, unique-id = {32064277}, abstract = {Recently, an increasing number of battery electric railway vehicles are being put into service. The operational characteristics of hybrid-powered vehicles are different from diesel propulsion, which is a challenge for railway companies. This paper introduces a multi-criteria evaluation method to facilitate the harmonization of various parameters related to hybrid vehicles and the evaluation of railway lines based on the attributes of new types of railcars. The length of the non-electrified sections, battery capacity, condition of railway tracks, number of operated railcars, and passenger traffic volume were identified as the main attributes that influence the applicability of battery electric railcars. It was found that without charging station deployment, railway lines electrified in 40-60% are the most suitable for battery electric railcar operation.}, keywords = {hybrid; Evaluation Method; battery electric; railcars}, year = {2021}, pages = {1-6}, orcid-numbers = {Csonka, Bálint/0000-0002-4976-8294} } @inproceedings{MTMT:32064809, title = {Multikritériumos értékelő módszer hibrid meghajtású vasúti járművek üzemeltetéséhez}, url = {https://m2.mtmt.hu/api/publication/32064809}, author = {Fetter, Marcell and Csonka, Bálint}, booktitle = {XI. Nemzetközi Közlekedéstudományi Konferencia}, unique-id = {32064809}, abstract = {Napjainkban egyre több hibrid-akkumulátoros meghajtású vasúti járművet helyeznek forgalomba. Az üzemeltetési jellemzői ezeknek a járműveknek nagyban eltér a hagyományos dízel és villany meghajtásúakétól, ami kihívást jelent az azokat üzemeltető vasútvállalatok számára. Ezért kidolgoztunk egy multikritériumos értékelő módszert, ami segítséget nyújt a hibrid járművek paramétereinek harmonizálásában, illetve az új típusú járművek jellemzői alapján lehetőség nyílik a vasútvonalak értékelésére is. Megállapítottuk, hogy a nem villamosított szakaszok hossza, az akkumulátor kapacitása, a vasúti pálya állapota, az üzemeltetett motorvonatok száma és az utasforgalom nagysága a legfontosabb tényezők a hibrid motorvonatok üzemeltethetősége szempontjából. Az érétkelő módszert több vasútvonalra alkalmaztuk, ami alapján megállapítottuk, hogy elektromos töltőállomás kiépítése nélkül azon vasútvonalakon célszerű a hibrid, villamos-akkumulátoros motorvonatok közlekedtetése, melyek 40-60%-ban villamosítottak.}, year = {2021}, pages = {116-126}, orcid-numbers = {Csonka, Bálint/0000-0002-4976-8294} } @inproceedings{MTMT:31374701, title = {Centralized charging power distribution method for electric vehicles}, url = {https://m2.mtmt.hu/api/publication/31374701}, author = {Csonka, Bálint}, booktitle = {2020 Smart City Symposium Prague (SCSP)}, doi = {10.1109/SCSP49987.2020.9134002}, unique-id = {31374701}, abstract = {The extra electricity load generated by the increasing number of electric vehicles (EV) may have an adverse effect on the electrical grid of cities. At the same time, electric vehicles may also be considered as mobile energy storages that can significantly reduce load fluctuations. Therefore, a mathematical model for the coordination of EV charging and electric network capacity had been elaborated. The model supports the optimization of electricity load by charging power distribution and bidirectional energy flow between EVs and charging infrastructure. The optimization problem was solved using linear programming. The model was applied to determine the optimal solar power for charging EVs. It was found that daytime charging demand may be served using only solar energy without surplus in generation if the share of flexible demand was higher than app. 15 %. Furthermore, centralized control may decrease the charging cost significantly.}, keywords = {Linear programming; Electric vehicle; Electrical grid; charging optimization}, year = {2020}, orcid-numbers = {Csonka, Bálint/0000-0002-4976-8294} }