The technology of autonomous vehicles is gaining more and more emphasis these days. In the near future the technological developments will make it possible for vehicles to travel on the roads without human intervention. However, downstream users have differing views on this new mode of transport. The aim of our research was to explore the opinions of different social generation groups and traffic groups about fully autonomous self-driving (SAE Level 5). In our research, we conducted an online self-report questionnaire survey. The questionnaire was completed by 223 people. The results were analyzed from several perspectives. The results showed that opinions and expectations in the field of autonomous vehicles differed by generation group, gender and primary mode of transport.
{"title":"Social Perception of Autonomous Vehicles","authors":"Nóra Krizsik, Tibor Sipos","doi":"10.3311/pptr.20228","DOIUrl":"https://doi.org/10.3311/pptr.20228","url":null,"abstract":"The technology of autonomous vehicles is gaining more and more emphasis these days. In the near future the technological developments will make it possible for vehicles to travel on the roads without human intervention. However, downstream users have differing views on this new mode of transport. The aim of our research was to explore the opinions of different social generation groups and traffic groups about fully autonomous self-driving (SAE Level 5). In our research, we conducted an online self-report questionnaire survey. The questionnaire was completed by 223 people. The results were analyzed from several perspectives. The results showed that opinions and expectations in the field of autonomous vehicles differed by generation group, gender and primary mode of transport.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135837642","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}
Zdenka Bulková, J. Gašparík, M. Poliak, Lumír Pečený
The market for rail services in EU countries has long been inaccessible to the private sector. Transport services were provided by national operators, which led to the prevention of participation in fair and non-discriminatory competition in the provision of rail transport services. It is necessary to analyse the overall development in the operation of rail passenger transport, including the entry of private operators into the rail infrastructure. Based on the knowledge of the current situation, it is necessary to take measures to achieve compliance with the requirements of Regulation (EC) No 1370/2007. The paper characterizes the current state and the process of organizing public tenders in the Slovak Republic based on a case study and their process and proposes the gradual steps of the public tender in the form of a schedule. An important point of the whole process of the organization of the public tender is the correct setting of competencies, determination of the subject of the public tender and to propose a uniform methodology of the public tender, which may, however, vary in individual states due to the conditions of national legislation. Part of the unified methodology is the determination of the phases of the public tender process, which are part of the schedule of the public tender. The schedule of the public tender shows the entire cycle, resp. the duration of each phase of the tender for each proposed group of measures taken.
长期以来，私营部门一直无法进入欧盟国家的铁路服务市场。运输服务是由国家经营者提供的，这导致在提供铁路运输服务方面无法参与公平和非歧视的竞争。有必要分析铁路客运运营的整体发展，包括私营运营商进入铁路基础设施。根据对当前情况的了解，有必要采取措施以达到法规(EC) No 1370/2007的要求。本文以案例研究及其过程为基础，描述了斯洛伐克共和国组织公开招标的现状和过程，并以时间表的形式提出了公开招标的逐步步骤。在组织公开招标的整个过程中，重要的一点是正确设置投标能力，确定公开招标的主体，并提出统一的公开招标方法，然而，由于各国的立法条件，这种方法可能会有所不同。统一方法的一部分是确定公开招标过程的阶段，这是公开招标时间表的一部分。公开招标的时间表显示了整个周期，如:投标每一阶段所采取的每一组拟议措施的持续时间。
{"title":"Technological Aspects of Tendering in Rail Passenger Transport in Slovakia","authors":"Zdenka Bulková, J. Gašparík, M. Poliak, Lumír Pečený","doi":"10.3311/pptr.20356","DOIUrl":"https://doi.org/10.3311/pptr.20356","url":null,"abstract":"The market for rail services in EU countries has long been inaccessible to the private sector. Transport services were provided by national operators, which led to the prevention of participation in fair and non-discriminatory competition in the provision of rail transport services. It is necessary to analyse the overall development in the operation of rail passenger transport, including the entry of private operators into the rail infrastructure. Based on the knowledge of the current situation, it is necessary to take measures to achieve compliance with the requirements of Regulation (EC) No 1370/2007. The paper characterizes the current state and the process of organizing public tenders in the Slovak Republic based on a case study and their process and proposes the gradual steps of the public tender in the form of a schedule. An important point of the whole process of the organization of the public tender is the correct setting of competencies, determination of the subject of the public tender and to propose a uniform methodology of the public tender, which may, however, vary in individual states due to the conditions of national legislation. Part of the unified methodology is the determination of the phases of the public tender process, which are part of the schedule of the public tender. The schedule of the public tender shows the entire cycle, resp. the duration of each phase of the tender for each proposed group of measures taken.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42177023","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}
Unsuccessful overtaking maneuvers on two-lane rural roads are one of the major causes of road accidents in the 21st century. The complexity of this maneuver merits the adoption of a thorough method for developing a proposed assistance system to prevent accidents and consequently reduce the high number of fatalities and the associated economic costs. This study aims to introduce an intelligent Driver Overtaking Assistance System (DOAS) to assist drivers in performing overtaking maneuvers safely. The study also will introduce a method to assess the impact of all the influential variables related to the driver, vehicle, traffic, road, and the surrounding environment. In momentary driving situations, the DOAS uses the communicated information via Hello beacon messages (HBM) and a set of input sensors to measure the possibility of overtaking the preceding vehicle(s) proactively by considering whether the distance gap to the oncoming vehicle is sufficient for overtaking. Besides, the proposed system is a vehicle-based safety system based on the collection of contextual information from the driving vicinity to acquire all relevant information regarding the ambient driving environment and the vehicles involved in the overtaking. To do this, DOAS uses a Bayesian Network (BN) to model overtaking maneuvers. The work presented shows high accuracy and promising results in aiding safe overtaking, with significant improvements to overtaking maneuvers on two-lane rural roads.
{"title":"Bayesian Networks for the Driver Overtaking Assistance System on Two-lane Roads","authors":"S. A. Fadhil","doi":"10.3311/pptr.18459","DOIUrl":"https://doi.org/10.3311/pptr.18459","url":null,"abstract":"Unsuccessful overtaking maneuvers on two-lane rural roads are one of the major causes of road accidents in the 21st century. The complexity of this maneuver merits the adoption of a thorough method for developing a proposed assistance system to prevent accidents and consequently reduce the high number of fatalities and the associated economic costs. This study aims to introduce an intelligent Driver Overtaking Assistance System (DOAS) to assist drivers in performing overtaking maneuvers safely. The study also will introduce a method to assess the impact of all the influential variables related to the driver, vehicle, traffic, road, and the surrounding environment. In momentary driving situations, the DOAS uses the communicated information via Hello beacon messages (HBM) and a set of input sensors to measure the possibility of overtaking the preceding vehicle(s) proactively by considering whether the distance gap to the oncoming vehicle is sufficient for overtaking. Besides, the proposed system is a vehicle-based safety system based on the collection of contextual information from the driving vicinity to acquire all relevant information regarding the ambient driving environment and the vehicles involved in the overtaking. To do this, DOAS uses a Bayesian Network (BN) to model overtaking maneuvers. The work presented shows high accuracy and promising results in aiding safe overtaking, with significant improvements to overtaking maneuvers on two-lane rural roads.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44521867","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}
Female passengers dominate the mobility by employing Bus Rapid Transit (BRT) in Indonesia and they possess a unique travel pattern compared to men. Women require more genuine investment efforts in comfortable and safer infrastructure for accessing and utilizing public transportation. The implementation of a smart city is one of the infrastructure investments. Smart mobility is one of the service cluster divisions, and smart mobility indicators are taken into account in the implementation. The objective of this study is to convert female mobility patterns and attitudes toward BRT service into smart mobility indicators. The method used is quantitative, and the questionnaire is designed to poll 209 people. Chi-Square and Likert scale are employed to analyze those criteria. The results demonstrate that the BRT has provided the female passenger services that they require at the current service level. The passenger pattern demonstrates that women depend on the BRT service to meet their transportation needs. Furthermore, the ICT criteria as a core for smart mobility has been challenging for both parties (female passengers and BRT operator). The limitation of this study is that it cannot demonstrate empirically that smart mobility is free gender biased and gaps until public transportation is fully inclusive.
{"title":"Asserting the Female Mobility Pattern as Smart Mobility Indicator: Lesson Learned From Bus Rapid Transit (BRT) Passengers in Indonesia","authors":"Fauzan Romadlon, Yudha Saintika","doi":"10.3311/pptr.19706","DOIUrl":"https://doi.org/10.3311/pptr.19706","url":null,"abstract":"Female passengers dominate the mobility by employing Bus Rapid Transit (BRT) in Indonesia and they possess a unique travel pattern compared to men. Women require more genuine investment efforts in comfortable and safer infrastructure for accessing and utilizing public transportation. The implementation of a smart city is one of the infrastructure investments. Smart mobility is one of the service cluster divisions, and smart mobility indicators are taken into account in the implementation. The objective of this study is to convert female mobility patterns and attitudes toward BRT service into smart mobility indicators. The method used is quantitative, and the questionnaire is designed to poll 209 people. Chi-Square and Likert scale are employed to analyze those criteria. The results demonstrate that the BRT has provided the female passenger services that they require at the current service level. The passenger pattern demonstrates that women depend on the BRT service to meet their transportation needs. Furthermore, the ICT criteria as a core for smart mobility has been challenging for both parties (female passengers and BRT operator). The limitation of this study is that it cannot demonstrate empirically that smart mobility is free gender biased and gaps until public transportation is fully inclusive.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47319875","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}
M. Juhasz, T. Mátrai, Júlio Hennderson Oliveira da Cruz, Á. Török
Planners and policymakers are concerned that cost-benefit analysis (CBA) rankings are so sensitive that even minor adjustments in contentious input parameters might result in drastically different policy recommendations. Although there is a need for methodological improvement, CBA seems to retain its role as the most coherent and robust framework available for project appraisal. Based on the mentioned need for improvement, this paper aims to create a test environment to analyse possible methodological advances in transport CBAs. This test environment consists of three different models based on typical transport interventions. The models have different levels of complexity and computational need. The sensitivity of each model was tested, and the most critical factors were identified. The majority of the economic benefits come from travel time savings, so the value of time was identified as the five most sensitive factors for all cases.
{"title":"Test Environments to Analyse Methodological Improvements of Cost-benefit Analysis for Transport Interventions","authors":"M. Juhasz, T. Mátrai, Júlio Hennderson Oliveira da Cruz, Á. Török","doi":"10.3311/pptr.20996","DOIUrl":"https://doi.org/10.3311/pptr.20996","url":null,"abstract":"Planners and policymakers are concerned that cost-benefit analysis (CBA) rankings are so sensitive that even minor adjustments in contentious input parameters might result in drastically different policy recommendations. Although there is a need for methodological improvement, CBA seems to retain its role as the most coherent and robust framework available for project appraisal. Based on the mentioned need for improvement, this paper aims to create a test environment to analyse possible methodological advances in transport CBAs. This test environment consists of three different models based on typical transport interventions. The models have different levels of complexity and computational need. The sensitivity of each model was tested, and the most critical factors were identified. The majority of the economic benefits come from travel time savings, so the value of time was identified as the five most sensitive factors for all cases.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42620822","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}
As crash data have distinctive behavior like over-dispersion, researchers have used statistical methods to deal with this unique behavior of crash data specifically. This study employed generalized linear modeling techniques to develop the model. It was assumed that the accident counts followed negative-binomial distribution, and the link function was chosen to be the log link function. Negative-binomial modeling technique was chosen over Poisson distribution because it is the most used technique by many researchers as crash data may encounter over-dispersion. The accident data set showed greater variability between its variance and mean. The accident frequency distribution is shown in this study that it is highly skewed, with a very high number of road segments registering zero accidents. Negative binomial distribution was chosen over Poisson distribution after comparing Akaike’s Information Criterion (AIC) and Bayesian Information Criteria (BIC). The method is widely applied to count data. Twenty-two parameters were estimated in the model. Since p < 0.05 in the omnibus test, the null hypothesis is rejected, which indicates that the model is reasonably fit. The strongest variables in the model were witnessed to be the length of the links, number of lanes, average daily traffic, bus lane, number of buses and trolleys, and HGVs.
{"title":"Generalized Linear Modeling of Crashes on Urban Road Links","authors":"A.A. Mekonnen, T. Sipos, Z. Szabó","doi":"10.3311/pptr.19119","DOIUrl":"https://doi.org/10.3311/pptr.19119","url":null,"abstract":"As crash data have distinctive behavior like over-dispersion, researchers have used statistical methods to deal with this unique behavior of crash data specifically. This study employed generalized linear modeling techniques to develop the model. It was assumed that the accident counts followed negative-binomial distribution, and the link function was chosen to be the log link function. Negative-binomial modeling technique was chosen over Poisson distribution because it is the most used technique by many researchers as crash data may encounter over-dispersion. The accident data set showed greater variability between its variance and mean. The accident frequency distribution is shown in this study that it is highly skewed, with a very high number of road segments registering zero accidents. Negative binomial distribution was chosen over Poisson distribution after comparing Akaike’s Information Criterion (AIC) and Bayesian Information Criteria (BIC). The method is widely applied to count data. Twenty-two parameters were estimated in the model. Since p < 0.05 in the omnibus test, the null hypothesis is rejected, which indicates that the model is reasonably fit. The strongest variables in the model were witnessed to be the length of the links, number of lanes, average daily traffic, bus lane, number of buses and trolleys, and HGVs.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44572013","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}
Oyetunde Oluwafemi Adeleke, D. Oguntayo, Iyunade Tiwalade Ayobami, G. Ogunkunbi
Intersections in urban centers, especially those without any form of signalization, are accident hotspots. This, therefore, calls for ef-fective and efficient traffic management at the intersections for improved safety and efficient traffic flow. This study aimed to improve traffic flow at the Gaa-Akanbi intersection in Ilorin, Nigeria, using a traffic signal scheme. A traffic volume study and geometric features survey was carried out at the intersection. The traffic volume study was performed to determine the number, movement, and classification of vehicles at this intersection using the manual method of traffic count, while the geometric survey of the intersection was done using tape and Total Station. A 3-phase traffic signal was proposed. The optimum cycle length and signal setting were determined using SIDRA Intersection software by adopting the maximum average passenger car unit on the intersection and targeted level of service (LOS) "D". A traffic signal plan with a cycle length of 150 seconds was designed for the intersection. The amber time was considered to be 2 seconds for all phases, and green time of 48, 46 and 38 seconds was gotten for phases 1, 2 and 3, respectively; this timing ensures that minimum delay occurs at the intersection. The proposed traffic signal should be adopted at the intersection by the metropolitan traffic management agency to improve traffic management.
{"title":"Improving Traffic Flow in Emerging Cities: A SIDRA Intersection Based Traffic Signal Design","authors":"Oyetunde Oluwafemi Adeleke, D. Oguntayo, Iyunade Tiwalade Ayobami, G. Ogunkunbi","doi":"10.3311/pptr.18018","DOIUrl":"https://doi.org/10.3311/pptr.18018","url":null,"abstract":"Intersections in urban centers, especially those without any form of signalization, are accident hotspots. This, therefore, calls for ef-fective and efficient traffic management at the intersections for improved safety and efficient traffic flow. This study aimed to improve traffic flow at the Gaa-Akanbi intersection in Ilorin, Nigeria, using a traffic signal scheme. A traffic volume study and geometric features survey was carried out at the intersection. The traffic volume study was performed to determine the number, movement, and classification of vehicles at this intersection using the manual method of traffic count, while the geometric survey of the intersection was done using tape and Total Station. A 3-phase traffic signal was proposed. The optimum cycle length and signal setting were determined using SIDRA Intersection software by adopting the maximum average passenger car unit on the intersection and targeted level of service (LOS) \"D\". A traffic signal plan with a cycle length of 150 seconds was designed for the intersection. The amber time was considered to be 2 seconds for all phases, and green time of 48, 46 and 38 seconds was gotten for phases 1, 2 and 3, respectively; this timing ensures that minimum delay occurs at the intersection. The proposed traffic signal should be adopted at the intersection by the metropolitan traffic management agency to improve traffic management.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47951938","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}
This article analyses road traffic accidents caused by motorcycle riders' technical errors. It presents an accident table that links the nature of the accidents to the causes of the accident. The connection provides a comprehensive overview of the typical motorcycle accidents that can be extended to events that have occurred. With this in mind, a conclusion can be drawn in the sense that an accident could have been avoided by a proper reaction of the motorcycle rider, and it would also make suggestions for developing a methodology for motorcycling education. Currently, motorcycling on the domestic road network is a hobby rather than a means of everyday travel, but the 10% participation rate in accidents certainly justifies the need to investigate this mode of transport. Today's state-of-the-art and technically well-equipped high-performance motorcycles require efficient vehicle handling and road use preparation. Therefore, drivers need to be able to respond appropriately to the challenges of our accelerated traffic.
{"title":"Analysis of Technical Errors Made by Motorcycle Riders","authors":"Péter Homonnai, Peter Mandoki","doi":"10.3311/pptr.18794","DOIUrl":"https://doi.org/10.3311/pptr.18794","url":null,"abstract":"This article analyses road traffic accidents caused by motorcycle riders' technical errors. It presents an accident table that links the nature of the accidents to the causes of the accident. The connection provides a comprehensive overview of the typical motorcycle accidents that can be extended to events that have occurred. With this in mind, a conclusion can be drawn in the sense that an accident could have been avoided by a proper reaction of the motorcycle rider, and it would also make suggestions for developing a methodology for motorcycling education. Currently, motorcycling on the domestic road network is a hobby rather than a means of everyday travel, but the 10% participation rate in accidents certainly justifies the need to investigate this mode of transport. Today's state-of-the-art and technically well-equipped high-performance motorcycles require efficient vehicle handling and road use preparation. Therefore, drivers need to be able to respond appropriately to the challenges of our accelerated traffic.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42887383","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}
Traffic and transport researchers, policymakers, and vehicle manufacturers are interested in investigating the implications and the influence of autonomous vehicles (AV) because a gradual deployment of such new technologies is expected to take place in the future. This research investigates the impacts of the AVs emergence on traffic performance for the city of Budapest in three future traffic scenarios with different AV market replacement rates for the year 2030. The network was modeled using simulation-based dynamic traffic assignment in PTV Visum software. Four traffic performance parameters were analyzed to explore the impacts of AV's emergence on the network. The results showed noticeable improvements among the four investigated traffic performance parameters.
{"title":"Analysis of the Emergence of Autonomous Vehicles Using Simulation-based Dynamic Traffic Assignment – The Case of Budapest","authors":"Anas Alatawneh, Mohamad Shatanawi, F. Mészáros","doi":"10.3311/pptr.20655","DOIUrl":"https://doi.org/10.3311/pptr.20655","url":null,"abstract":"Traffic and transport researchers, policymakers, and vehicle manufacturers are interested in investigating the implications and the influence of autonomous vehicles (AV) because a gradual deployment of such new technologies is expected to take place in the future. This research investigates the impacts of the AVs emergence on traffic performance for the city of Budapest in three future traffic scenarios with different AV market replacement rates for the year 2030. The network was modeled using simulation-based dynamic traffic assignment in PTV Visum software. Four traffic performance parameters were analyzed to explore the impacts of AV's emergence on the network. The results showed noticeable improvements among the four investigated traffic performance parameters.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42462064","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}
D. Gunarathne, N. Amarasingha, Asiri Kulathunga, Vasantha Wicramasighe
Modeling effective vehicular traffic is a highly contested topic, especially in developing countries like Sri Lanka, which has a wide range of driving conditions. VISSIM microsimulation software is currently used by Road Development Authority (RDA) and relevant authorities to perform traffic management solutions in Sri Lanka. However, it is required to do modifications to the existing driver behavior parameter values to effectively reflect the realistic traffic conditions observed in the real-world in the simulated model. The main purpose of this study is to calibrate the VISSIM driver behavior parameter values using a genetic algorithm (GA). The methodology and results of the VISSIM model’s sensitivity analysis and calibration, which was developed for the Malabe three-legged signalized intersection, are presented in this study. A sensitivity analysis was used to find the most sensitive driver behavior parameters. Using the multi-objective GA optimization tool in the MATLAB software's optimization toolbox, the optimum driver behavior parameter values for these identified most sensitive driver behavior parameters were determined. The findings revealed that GA optimization is effective in reducing the difference between observed and simulated results.
{"title":"Optimization of VISSIM Driver Behavior Parameter Values Using Genetic Algorithm","authors":"D. Gunarathne, N. Amarasingha, Asiri Kulathunga, Vasantha Wicramasighe","doi":"10.3311/pptr.20106","DOIUrl":"https://doi.org/10.3311/pptr.20106","url":null,"abstract":"Modeling effective vehicular traffic is a highly contested topic, especially in developing countries like Sri Lanka, which has a wide range of driving conditions. VISSIM microsimulation software is currently used by Road Development Authority (RDA) and relevant authorities to perform traffic management solutions in Sri Lanka. However, it is required to do modifications to the existing driver behavior parameter values to effectively reflect the realistic traffic conditions observed in the real-world in the simulated model. The main purpose of this study is to calibrate the VISSIM driver behavior parameter values using a genetic algorithm (GA). The methodology and results of the VISSIM model’s sensitivity analysis and calibration, which was developed for the Malabe three-legged signalized intersection, are presented in this study. A sensitivity analysis was used to find the most sensitive driver behavior parameters. Using the multi-objective GA optimization tool in the MATLAB software's optimization toolbox, the optimum driver behavior parameter values for these identified most sensitive driver behavior parameters were determined. The findings revealed that GA optimization is effective in reducing the difference between observed and simulated results.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48236831","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}
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