@article{MTMT:34733470, title = {Business Model for Shared Autonomous Vehicles Mobility Services}, url = {https://m2.mtmt.hu/api/publication/34733470}, author = {Siqueira Silva, Dahlen and Földes, Dávid and Csiszár, Csaba}, doi = {10.17559/TV-20230502000597}, journal-iso = {TEH VJESN}, journal = {TEHNICKI VJESNIK-TECHNICAL GAZETTE}, volume = {31}, unique-id = {34733470}, issn = {1330-3651}, abstract = {We propose a business model (BM) for mobility services based on shared autonomous vehicles (SAVs) anticipating the changes and opportunities for the current shared mobility service companies in updating their BMs to consider the AV technology. We have analysed the service characteristics of the current shared mobility services-taxi, ride-sourcing, ride-sharing, car rental, peer-to-peer car-sharing, and business-to-consumers car-sharing–and accordingly we determined how they would change when AVs are implemented into these services. The Lean Canvas is used to prepare the new BM, assuming the convergence of the current shared mobility services' BMs. We found that a customized travel fee and involvement of private AV owners in the service will alter revenue streams and customer segments, but modifications of key metrics and channels are not needed. According to the elaborated results, shared mobility companies can determine alterations in their BMs, strategy, and targets.}, keywords = {business model; mobility service; Shared autonomous vehicles; lean canvas}, year = {2024}, eissn = {1848-6339}, pages = {647-656}, orcid-numbers = {Földes, Dávid/0000-0003-4352-8166; Csiszár, Csaba/0000-0002-4677-3733} } @article{MTMT:34565469, title = {Impact of Ambient Temperature, Passenger Load, and Delay on the Consumption of Battery Electric Buses}, url = {https://m2.mtmt.hu/api/publication/34565469}, author = {Szilassy, Péter Ákos and Földes, Dávid}, doi = {10.3311/PPtr.23478}, journal-iso = {PERIOD POLYTECH TRANSP ENG}, journal = {PERIODICA POLYTECHNICA TRANSPORTATION ENGINEERING}, volume = {52}, unique-id = {34565469}, issn = {0303-7800}, abstract = {The operation of state-of-the-art battery electric buses (BEBs) has started recently, and their consumption model is unknown. Therefore, the service providers are lenient regarding the energy used. Our aim was to reveal the effects of ambient temperature and bus service characteristics, such as passenger load and delay, on the energy consumption. Real-time consumption data of BEBs were analyzed in Nyíregyháza, Hungary, and the functional relationships among the aforementioned variables were revealed. We found that while ambient temperature is negatively correlated with consumption in the cold winter periods, the consumption surplus is positively correlated with passenger load and generally positively correlated with the delay on the trip because of road traffic. In the case of delay, the consumption increase is caused by more frequent acceleration and the greater consumption of auxiliary systems due to longer running times. Accordingly, the energy consumption can be estimated if the characteristics data are available. The results can be used by bus service operators to plan the daily schedule and predict the energy consumption of a BEB.}, year = {2024}, eissn = {1587-3811}, pages = {113-119}, orcid-numbers = {Szilassy, Péter Ákos/0000-0001-5069-8281; Földes, Dávid/0000-0003-4352-8166} } @article{MTMT:34528050, title = {Városi autóbusz-hálózat elektrifikációja}, url = {https://m2.mtmt.hu/api/publication/34528050}, author = {Szilassy, Péter Ákos and Földes, Dávid and Csonka, Bálint}, doi = {10.55348/KM.29}, journal-iso = {KÖZL MOBIL}, journal = {KÖZLEKEDÉS ÉS MOBILITÁS}, volume = {2}, unique-id = {34528050}, abstract = {Számos városban cél az elektromos autóbuszok részarányának növelése. Jelenleg azonban ezen autóbuszok drágábbak, mint a dízelüzemű járművek, valamint használatuk újszerű tervezési és üzemeltetési eljárások használatát követeli meg (pl. töltésütemezés, önjáró kapacitás). Ezek ellenére az elektrifikációt nem előzi meg hálózat-szintű tervezés. Kutatásunk célja a töltési infrastruktúra tervezésére, az elektromos autóbusz-típus kiválasztására és az elektrifikáció költségbecslésre vonatkozó módszertan kidolgozása volt. A kidolgozott módszer újszerűsége a töltési infrastruktúra viszonylatcsoport-szerinti optimalizálása a hálózat (viszonylatok, menetrend stb.), a jármű és a töltési infrastruktúra jellemzőinek figyelembevételével. A módszert Budapestre alkalmaztuk közös végállomással rendelkező vagy közös szakaszon közlekedő viszonylatok esetében statikus végállomási és dinamikus felsővezetékes töltést figyelembe véve. A jelentős közös szakasszal rendelkező viszonylatcsoportok esetében a fonódó szakaszon felsővezeték telepítése a kedvezőbb költségű szemben a végállomási töltők alkalmazásával. A közös végállomással, de minimális fonódó szakasszal rendelkező 47 vizsgált viszonylat esetében a végállomási töltés miatti csúcsidei többletjárműigény csupán +4%. Az eredmények segíthetik a városi autóbusz-hálózat elektrifikációjának tervezését.}, year = {2023}, eissn = {2939-7057}, pages = {32-50}, orcid-numbers = {Szilassy, Péter Ákos/0000-0001-5069-8281; Földes, Dávid/0000-0003-4352-8166; Csonka, Bálint/0000-0002-4976-8294} } @inproceedings{MTMT:34478667, title = {Patterns of Change in the Probability of a Road Traffic Accident by Drivers of Different Temperaments}, url = {https://m2.mtmt.hu/api/publication/34478667}, author = {Gyulyev, N. and Davidich, Y. and Voronko, V. and Davidich, N. and Földes, Dávid}, booktitle = {Smart Technologies in Urban Engineering}, doi = {10.1007/978-3-031-46874-2_32}, volume = {807 LNNS}, unique-id = {34478667}, abstract = {The presented paper establishes patterns of change in the probability of traffic accidents for twenty-year-old drivers taking into account traffic jams. It is noted that the duration of the traffic jam has a negative effect on the psychophysiological parameters of most drivers, which leads to an increase in psycho-emotional tension, the level of fatigue and, as a result, to an increase in the driver's reaction time. The probability of a traffic accident is one of the main properties of driver’s reliability, accounting for more than 70% of accidents. In order to assess the degree of impact of traffic jams on the probability of traffic accidents by young drivers, it is suggested to consider the ratio of these probabilities with and without traffic jams. It has been established that traffic jams affect drivers of different temperaments differently. The ratio of the probability of a traffic accident with and without a traffic jam for drivers of different temperaments was estimated using previously developed models of changes in the level of driver fatigue when leaving a traffic jam and changes in their reaction time. It was found that the duration of the traffic jam has the most negative effect on drivers of choleric and sanguine temperaments, increasing the probability of committing a traffic accident. Traffic jams have the least impact on a phlegmatic driver. The proposed scientific approach is based on a comprehensive study of the human factor, in particular the level of driver fatigue, which changes depending on driving conditions. The given patterns of change in the probability of road traffic accidents allow us to compare different solutions for improving road safety. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.}, keywords = {traffic accident; Regression model; Traffic jam; Driver reliability; Driver temperament}, year = {2023}, pages = {367-377}, orcid-numbers = {Földes, Dávid/0000-0003-4352-8166} } @article{MTMT:34436484, title = {Pick-up Points for Shared Autonomous Vehicle-based Mobility Services in Urban Areas: Demand Calculation and Locating Method}, url = {https://m2.mtmt.hu/api/publication/34436484}, author = {Siqueira Silva, Dahlen and Földes, Dávid and Csiszár, Csaba}, doi = {10.1016/j.trpro.2023.11.801}, journal-iso = {TRANSP RES PROCEDIA}, journal = {TRANSPORTATION RESEARCH PROCEDIA}, volume = {72}, unique-id = {34436484}, issn = {2352-1465}, abstract = {The shared, on-demand and almost door-to-door use of the autonomous vehicles is expected in the future. Points to pick up travelers are required to promote safety, comfort, and higher service quality. We propose a method to calculate the demand based on current car use and locate different pick-up points for shared autonomous vehicle-based mobility services considering urban environment, available services, and users’ preferences. The method is applied as a study case providing the main findings: (i) types of pick-up points are identified based on the purposes of serving demand; (ii) as the walking radius increases, the number of pick-up points decreases; (iii) the number of pick-up points on on-street parking and sections of a street is limited by the unavailability of space and streets with low traffic. The results support future urban planning on optimization of urban space.}, keywords = {Spatio-Temporal; urban planning; autonomous vehicles; Urban space; shared mobility; pick-up and drop-off}, year = {2023}, eissn = {2352-1457}, pages = {2628-2635}, orcid-numbers = {Földes, Dávid/0000-0003-4352-8166; Csiszár, Csaba/0000-0002-4677-3733} } @article{MTMT:34436453, title = {How to define and measure modal share?}, url = {https://m2.mtmt.hu/api/publication/34436453}, author = {Strommer, Tamás and Munkácsy, András and Földes, Dávid}, doi = {10.1016/j.trpro.2023.11.834}, journal-iso = {TRANSP RES PROCEDIA}, journal = {TRANSPORTATION RESEARCH PROCEDIA}, volume = {72}, unique-id = {34436453}, issn = {2352-1465}, keywords = {Measuring methods; resilient cities; modal share; multimodal/intermodal transport; terminology; non-motorised mobility}, year = {2023}, eissn = {2352-1457}, pages = {2888-2895}, orcid-numbers = {Strommer, Tamás/0000-0002-8365-6755; Munkácsy, András/0000-0002-8540-0585; Földes, Dávid/0000-0003-4352-8166} } @article{MTMT:34411504, title = {Simulating the alteration in energy consumption at a zebra crossing considering different traffic rates of electric and rule-following autonomous vehicles}, url = {https://m2.mtmt.hu/api/publication/34411504}, author = {Szigeti, Szilárd and Földes, Dávid and Ye, Xin}, doi = {10.14513/actatechjaur.00722}, journal-iso = {ACTA TECH JAURIN}, journal = {ACTA TECHNICA JAURINENSIS}, volume = {16}, unique-id = {34411504}, issn = {1789-6932}, abstract = {The progressive integration of autonomous vehicle (AV) technology holds the potential to reshape the prevailing traffic landscape. AVs have different driving characteristics than human-driven vehicles, which manifests itself in the strict adherence to speed limit, in giving priority to pedestrians, and in the pre-set headways they can keep. A traffic simulation environment was built around an unsignalized pedestrian crossing to measure the energy consumption of vehicles in the presence of AVs. The simulation environment was modified to adhere pedestrian-accepted gaps between vehicles in case of crossing. Considered vehicle types are yielding or not yielding human-driven, and AVs. Scenarios were built to model the AV traffic share, the different headways kept by AVs, and the various traffic volumes in each direction. The different driving behaviour and traffic share of AVs led to energy consumption changes, which were modelled through scenario analysis. The maximum energy consumption reduction of human-driven vehicles was 10.67% for yielding vehicles and 12.41% for non-yielding vehicles compared to the 0% AV traffic rate. Although, in case of AVs, the energy consumption increased in all scenarios compared to the basic version with only human-driven vehicles. In higher traffic scenarios, where only AVs were on the road, there was a substantial 35,92-96.55% increase in energy consumption, compared to the 0% AV ratio case. Thereby speed of vehicles, following distance and the number of stops affected the overall system efficiency. The results of this study can contribute to the understanding the impact of AVs which can support their introduction.}, year = {2023}, eissn = {2064-5228}, pages = {174-182}, orcid-numbers = {Szigeti, Szilárd/0000-0001-6061-7529; Földes, Dávid/0000-0003-4352-8166; Ye, Xin/0000-0002-3765-1363} } @inproceedings{MTMT:34212492, title = {Gyalogos csoportok átkelési döntéseinek vizsgálata jármű távolság alapján - budapesti esettanulmány}, url = {https://m2.mtmt.hu/api/publication/34212492}, author = {Szigeti, Szilárd and Földes, Dávid}, booktitle = {I. Közlekedésbiztonsági konferencia -Transport safety conference}, unique-id = {34212492}, year = {2023}, pages = {102-109}, orcid-numbers = {Szigeti, Szilárd/0000-0001-6061-7529; Földes, Dávid/0000-0003-4352-8166} } @inproceedings{MTMT:34134145, title = {Constrained Multi-agent Path Planning Problem}, url = {https://m2.mtmt.hu/api/publication/34134145}, author = {Maktabifard, Ali and Földes, Dávid and Bak, Bendegúz Dezső}, booktitle = {Computational Logistics}, doi = {10.1007/978-3-031-43612-3_28}, unique-id = {34134145}, year = {2023}, pages = {450-466}, orcid-numbers = {Földes, Dávid/0000-0003-4352-8166; Bak, Bendegúz Dezső/0000-0003-1378-875X} } @{MTMT:34033958, title = {Urban Bus Network Electrification}, url = {https://m2.mtmt.hu/api/publication/34033958}, author = {Földes, Dávid and Csonka, Bálint and Szilassy, Péter Ákos}, booktitle = {Transportation Engineering - Annual Volume 2023}, doi = {10.5772/intechopen.111940}, unique-id = {34033958}, abstract = {Electric busses are spreading in cities in hope of mitigating local air pollution. Currently, battery electric busses are more expensive and require novel operational methods to optimize their use (e.g., applying daytime charging, and operating trolleybuses). Despite these, the electrification of urban busses is usually ad-hoc, preliminary planning is superficial, and does not consider the relationships among bus lines. This chapter introduces a method regarding charging infrastructure planning, electric bus type selection, and cost estimation. Based on the characteristics of the vehicle, charging infrastructure, bus service (lines, timetable, etc.), and energy consumption, a line-group optimization is introduced, which is the main novelty. The method was applied in a case study considering static terminal and dynamic catenary charging. The results help operators to boost the electrification of the urban bus network.}, year = {2023}, pages = {1-23}, orcid-numbers = {Földes, Dávid/0000-0003-4352-8166; Csonka, Bálint/0000-0002-4976-8294; Szilassy, Péter Ákos/0000-0001-5069-8281} }