Pub Date : 2003-12-19DOI: 10.1109/ITSC.2003.1252735
Xiaoning Zhang, Hai Yang, Jiansong Zhang
The notions of user equilibrium (UE) and system optimum (SO) often allude to the literature together with the principle of marginal cost-pricing in the traffic network analyses. In reality, users do not always behave in a UE manner, typically when there exists oligopoly Cournot-Nash (CN) firms. In the presence of such UE-CN mixed equilibrium behaviors, we naturally ask whether a SO flow pattern remains attainable by meaningful link tolls. This paper provides a former answer to this question. We show that in a network with both UE and CN users, applying the traditional marginal-cost pricing for a system optimum requires that link tolls be differentiated across user classes. We then seek alternative meaningful tolls by establishing the existence of nonnegative uniform link tolls to support SO as a UE-CN mixed equilibrium with resort to a rigorous mathematical programming approach.
{"title":"System optimum and pricing in multi-behaviors","authors":"Xiaoning Zhang, Hai Yang, Jiansong Zhang","doi":"10.1109/ITSC.2003.1252735","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252735","url":null,"abstract":"The notions of user equilibrium (UE) and system optimum (SO) often allude to the literature together with the principle of marginal cost-pricing in the traffic network analyses. In reality, users do not always behave in a UE manner, typically when there exists oligopoly Cournot-Nash (CN) firms. In the presence of such UE-CN mixed equilibrium behaviors, we naturally ask whether a SO flow pattern remains attainable by meaningful link tolls. This paper provides a former answer to this question. We show that in a network with both UE and CN users, applying the traditional marginal-cost pricing for a system optimum requires that link tolls be differentiated across user classes. We then seek alternative meaningful tolls by establishing the existence of nonnegative uniform link tolls to support SO as a UE-CN mixed equilibrium with resort to a rigorous mathematical programming approach.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121026124","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}
Pub Date : 2003-12-19DOI: 10.1109/ITSC.2003.1252648
Li Zhen-long, Chen De-wang
In this paper, the stackelberg game is applied to optimally coordinate ramp metering and speed control in order to relieve peak hour congestion on urban freeways. Ramp metering can increase flow and prevent a traffic breakdown by adjusting the metering rate. Speed control is to regulate and guide the traffic on the main freeway lanes to achieve stability of traffic flow. We formulate the ramp metering and variable speed control as a stackelberg game and ramp metering is regarded as the leader, variable speed control as the follower. Within this framework, we propose a stackelberg game model of ramp metering and variable speed control. At last, we use a simple network to illustrate our approach and the simulation results show that this approach is effective.
{"title":"A stackelberg game approach to ramp metering and variable speed control","authors":"Li Zhen-long, Chen De-wang","doi":"10.1109/ITSC.2003.1252648","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252648","url":null,"abstract":"In this paper, the stackelberg game is applied to optimally coordinate ramp metering and speed control in order to relieve peak hour congestion on urban freeways. Ramp metering can increase flow and prevent a traffic breakdown by adjusting the metering rate. Speed control is to regulate and guide the traffic on the main freeway lanes to achieve stability of traffic flow. We formulate the ramp metering and variable speed control as a stackelberg game and ramp metering is regarded as the leader, variable speed control as the follower. Within this framework, we propose a stackelberg game model of ramp metering and variable speed control. At last, we use a simple network to illustrate our approach and the simulation results show that this approach is effective.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121058823","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}
Pub Date : 2003-12-19DOI: 10.1109/ITSC.2003.1252655
Xiaoguang Yang, Xiugang Li
Modern roundabouts have been used among many countries. But when the circulatory roadway of a roundabout has more than two lanes, the disorder of the traffic cause big problems. The weaving section where the vehicles enter or leave the roundabout appears to be the critical bottleneck. In this paper, a new method of traffic signal control for modern roundabout is put forward to solve the problem. Traffic signals are installed to control the traffic flow of entries and the left-turn traffic flow on circulatory roadway. Left-turn vehicles on circulatory roadway will stop before red signal to avoid weaving. The methodology including geometric design and traffic signal control of this new method is presented followed by the evaluation of the operational analysis with indexes of capacity and delay. This method has been successfully applied in Xiamen city to solve the very serious traffic congestion problem. By this method the green time of signal and the running lane of circulatory roadway are utilized optimally.
{"title":"A method of traffic signal control for modern roundabout","authors":"Xiaoguang Yang, Xiugang Li","doi":"10.1109/ITSC.2003.1252655","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252655","url":null,"abstract":"Modern roundabouts have been used among many countries. But when the circulatory roadway of a roundabout has more than two lanes, the disorder of the traffic cause big problems. The weaving section where the vehicles enter or leave the roundabout appears to be the critical bottleneck. In this paper, a new method of traffic signal control for modern roundabout is put forward to solve the problem. Traffic signals are installed to control the traffic flow of entries and the left-turn traffic flow on circulatory roadway. Left-turn vehicles on circulatory roadway will stop before red signal to avoid weaving. The methodology including geometric design and traffic signal control of this new method is presented followed by the evaluation of the operational analysis with indexes of capacity and delay. This method has been successfully applied in Xiamen city to solve the very serious traffic congestion problem. By this method the green time of signal and the running lane of circulatory roadway are utilized optimally.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127152587","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}
Pub Date : 2003-12-19DOI: 10.1109/ITSC.2003.1252695
Hui Xiong, L. Miao, Q. Shi
Beijing Road Management System (BRMS) is a comprehensive pavement management system developing and implementing both at network level and project level. BRMS aims to assist pavement agencies in making decision effectively and efficiently. This paper describes the key modules compulsory for network level implementation including database module, condition survey module, condition assessment module, performance prediction module and optimization module. In BRMS, pavement sections are identified based on the road length and functional classification. To collect distress data efficiently, a new automated conditions survey system undertaking shows more advantages in comparison with manually device. Pavement condition index (PCI) is used for assessment of pavement distress type and severity for both flexible and rigid pavements. In the optimization module, integer programming is applied to determine M&R policies. These modules provide a common platform for the life-cycle pavement management in conjunction with the project level modules to be integrated.
{"title":"Network level framework for Beijing Roadway Management System","authors":"Hui Xiong, L. Miao, Q. Shi","doi":"10.1109/ITSC.2003.1252695","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252695","url":null,"abstract":"Beijing Road Management System (BRMS) is a comprehensive pavement management system developing and implementing both at network level and project level. BRMS aims to assist pavement agencies in making decision effectively and efficiently. This paper describes the key modules compulsory for network level implementation including database module, condition survey module, condition assessment module, performance prediction module and optimization module. In BRMS, pavement sections are identified based on the road length and functional classification. To collect distress data efficiently, a new automated conditions survey system undertaking shows more advantages in comparison with manually device. Pavement condition index (PCI) is used for assessment of pavement distress type and severity for both flexible and rigid pavements. In the optimization module, integer programming is applied to determine M&R policies. These modules provide a common platform for the life-cycle pavement management in conjunction with the project level modules to be integrated.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127340715","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}
Pub Date : 2003-12-19DOI: 10.1109/ITSC.2003.1252769
Xiangyong Yin
The bus dispatching platform is the core of the bus intelligent dispatching system. The bus dispatching real-time expert system is established according to the status of bus operation, making use of the best dispatching experiences and the preplan accumulated by the dispatchers in many years. The system adopts the progressive reason, combined with the case-based reasoning and the rule-based reasoning. The practical application shows that the system has improved the judging and decision-making level of the dispatchers.
{"title":"The development of bus dispatching platform based on real-time expert system","authors":"Xiangyong Yin","doi":"10.1109/ITSC.2003.1252769","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252769","url":null,"abstract":"The bus dispatching platform is the core of the bus intelligent dispatching system. The bus dispatching real-time expert system is established according to the status of bus operation, making use of the best dispatching experiences and the preplan accumulated by the dispatchers in many years. The system adopts the progressive reason, combined with the case-based reasoning and the rule-based reasoning. The practical application shows that the system has improved the judging and decision-making level of the dispatchers.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125089062","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}
Pub Date : 2003-12-19DOI: 10.1109/ITSC.2003.1252780
Mankun Xu, X. Ping
The problem of calculating the discrete Fourier transform (DFT) acquired in polar coordinate system has been given considerable attention in many fields during the last 40 years such as antenna, image registration, tomography. etc. Unlike DFT, the discrete polar Fourier transform (DPFT) has no X-Y separability and can't be directly computed by fast Fourier transform (FFT). This paper proposes an improved fast DPFT algorithm aiming at 2D real array data. By utilizing the properties of the shift discrete Fourier transform (SDFT) and the chirp-Z transform (CZT), the algorithm's overall computational complexity is significantly decreased and is more suitable for real-time applications by only 1D calculations. The experimental results demonstrate the applicability and good performance of this approach.
{"title":"An improved fast Fourier transform in polar coordinate system","authors":"Mankun Xu, X. Ping","doi":"10.1109/ITSC.2003.1252780","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252780","url":null,"abstract":"The problem of calculating the discrete Fourier transform (DFT) acquired in polar coordinate system has been given considerable attention in many fields during the last 40 years such as antenna, image registration, tomography. etc. Unlike DFT, the discrete polar Fourier transform (DPFT) has no X-Y separability and can't be directly computed by fast Fourier transform (FFT). This paper proposes an improved fast DPFT algorithm aiming at 2D real array data. By utilizing the properties of the shift discrete Fourier transform (SDFT) and the chirp-Z transform (CZT), the algorithm's overall computational complexity is significantly decreased and is more suitable for real-time applications by only 1D calculations. The experimental results demonstrate the applicability and good performance of this approach.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122532623","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}
There are many conventional methods for traffic signal control in the world, but hey only consider the vehicle flow and fail to consider the non-vehicle flow. So it doesn't adapt to the traffic intersection that have many non-vehicle flow. For specialty of traffic in China, this paper considers the vehicle flow and the non-vehicle flow at the same time and puts forward the model of multiphase fuzzy control under hybrid traffic flow. The controller changes both phase sequence and phase length of traffic signal adaptively to traffic condition. Computer simulation can show the efficient of the signal control model.
{"title":"Multiphase fuzzy control under hybrid traffic flow of single intersection","authors":"Junxia Gao, Jiangeng Li, Xiaohua Zhao, Yangzhou Chen","doi":"10.1109/ITSC.2003.1252699","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252699","url":null,"abstract":"There are many conventional methods for traffic signal control in the world, but hey only consider the vehicle flow and fail to consider the non-vehicle flow. So it doesn't adapt to the traffic intersection that have many non-vehicle flow. For specialty of traffic in China, this paper considers the vehicle flow and the non-vehicle flow at the same time and puts forward the model of multiphase fuzzy control under hybrid traffic flow. The controller changes both phase sequence and phase length of traffic signal adaptively to traffic condition. Computer simulation can show the efficient of the signal control model.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122925821","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}
Pub Date : 2003-12-19DOI: 10.1109/ITSC.2003.1252630
Yan Tian, Jingyan Song, D. Yao, Jianming Hu
The dynamic vehicle routing problem, DVRP, consists in optimally routing a fleet occur at random. The optimization consists in finding the solution that minimizes the total length of tours and satisfying the customer delivery time window. In this paper, we present a hybrid ant system to handle the dynamism by means of modifying the pheromone matrix and candidate sets strategy. In addition, we make further improvements on vehicle routes with the local search heuristics. The results show that the hybrid ant system works effectively to find competitive solutions.
{"title":"Dynamic vehicle routing problem using hybrid ant system","authors":"Yan Tian, Jingyan Song, D. Yao, Jianming Hu","doi":"10.1109/ITSC.2003.1252630","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252630","url":null,"abstract":"The dynamic vehicle routing problem, DVRP, consists in optimally routing a fleet occur at random. The optimization consists in finding the solution that minimizes the total length of tours and satisfying the customer delivery time window. In this paper, we present a hybrid ant system to handle the dynamism by means of modifying the pheromone matrix and candidate sets strategy. In addition, we make further improvements on vehicle routes with the local search heuristics. The results show that the hybrid ant system works effectively to find competitive solutions.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"255 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114475192","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}
Pub Date : 2003-12-19DOI: 10.1109/ITSC.2003.1252710
Y. Rui, Wenjie Liu, Xiaoping Li, Zhiwei Zhang
Improper braking sometimes causes traffic accidents. In this paper, with the given braking distance, the vehicle speed and maximum speed reduction rate, we explore the intelligent control of the vehicle braking on the basis of the neural networks principle in order to make intelligent appropriate braking for the least-felt impact on human body.
{"title":"Research on vehicle intelligent braking control based on neural networks","authors":"Y. Rui, Wenjie Liu, Xiaoping Li, Zhiwei Zhang","doi":"10.1109/ITSC.2003.1252710","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252710","url":null,"abstract":"Improper braking sometimes causes traffic accidents. In this paper, with the given braking distance, the vehicle speed and maximum speed reduction rate, we explore the intelligent control of the vehicle braking on the basis of the neural networks principle in order to make intelligent appropriate braking for the least-felt impact on human body.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122064909","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}
Pub Date : 2003-12-19DOI: 10.1109/ITSC.2003.1252681
Sun Yi, Zhou Ping, Yan Yijin
With the rapid development of ITS, information about ITS become larger and more complicated than before. How to represent it integrally and effectively is the task we will face. This paper proposes a multi-level displaying approach that can display the whole map and its region of interest at the same time without multi-window switch and over-lap. Besides, in order to view the road map in reality, the road map is super-imposed on terrain map. Two methods adopted in the system provide two possible ways to get good user interface.
{"title":"Smooth navigation of road map in 3D scene","authors":"Sun Yi, Zhou Ping, Yan Yijin","doi":"10.1109/ITSC.2003.1252681","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252681","url":null,"abstract":"With the rapid development of ITS, information about ITS become larger and more complicated than before. How to represent it integrally and effectively is the task we will face. This paper proposes a multi-level displaying approach that can display the whole map and its region of interest at the same time without multi-window switch and over-lap. Besides, in order to view the road map in reality, the road map is super-imposed on terrain map. Two methods adopted in the system provide two possible ways to get good user interface.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128765014","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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