{"title":"Modeling and clustering network-level urban traffic status based on traffic flow assignment ratios","authors":"Li Qu, Jianming Hu, Yi Zhang","doi":"10.1109/ITSC.2010.5625105","DOIUrl":"https://doi.org/10.1109/ITSC.2010.5625105","url":null,"abstract":"The detected traffic data for single point or link cannot satisfy the needs for network-level traffic status information with the rapid development of the traffic control and guidance systems. This paper proposed a modeling and clustering method for network-level urban traffic status based on the dynamic traffic flow assignment ratios. The traffic assignment ratio matrix model integrates traffic status, topology and relation between links, with the dynamic traffic assignment ratios estimated by Linear Programming. The network-level traffic status is clustered by Self-Organizing Map and the typical patterns are discovered. The experiment proves the efficiency and applicability of this method for network-level traffic status modeling and analyzing.","PeriodicalId":176645,"journal":{"name":"13th International IEEE Conference on Intelligent Transportation Systems","volume":"266 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126055072","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}
{"title":"A developmental framework towards dynamic incident rerouting using vehicle-to-vehicle communication and multi-agent systems","authors":"S. Boskovich, K. Boriboonsomsin, M. Barth","doi":"10.1109/ITSC.2010.5625251","DOIUrl":"https://doi.org/10.1109/ITSC.2010.5625251","url":null,"abstract":"Non-recurring roadway traffic incidents are a part of everyday life that impedes normal traffic flow. One of the major challenges is to reroute traffic around incidents in order to maximize throughput. This often comes up when an incident occurs on a freeway and alternate routes need to be utilized on city and residential streets. Today's navigational devices can be used to find alternate routes based on minimum-distance or minimum-duration algorithms. However, these navigational devices tend to use the same greedy routing algorithms. This often results in moving the congestion from the incident location to another location in the network and perhaps causing further incidents due to the increased traffic that the roads are not designed to handle. In order to tackle this problem, we present an architectural framework that borrows concepts from multi agent systems and recent activity in vehicle-to-vehicle communication to model and implement behaviors that maximize overall system throughput.","PeriodicalId":176645,"journal":{"name":"13th International IEEE Conference on Intelligent Transportation Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125176877","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}
{"title":"Micro-simulation study of the effect of median bus lanes with midblock stop on capacity of urban signalized intersection","authors":"Xu-mei Chen, Pei Cai, Lin Zhu, Lei Yu","doi":"10.1109/ITSC.2010.5625099","DOIUrl":"https://doi.org/10.1109/ITSC.2010.5625099","url":null,"abstract":"This paper presents a micro-simulation approach on improving the capacity analysis of an urban signalized intersection impacted by median bus lanes with midblock stop. Four factors that influence the capacity are analyzed. Based on the data from a traffic survey, VISSIM simulation is used to analyze the relationship between capacity influencing factors and the capacity. The Capacity Reduction Factor is calibrated. Then, an improved calculation model on the capacity of the signalized intersection with median bus lanes is proposed. Finally, the result is compared with results obtained from other analytical methods, and validated against field data, which shows that the result obtained by the proposed model is closer to the field capacity with the smallest relative error.","PeriodicalId":176645,"journal":{"name":"13th International IEEE Conference on Intelligent Transportation Systems","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121669814","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}
{"title":"Effects of Cooperative Adaptive Cruise Control on traffic flow stability","authors":"W. Schakel, B. Arem, B. Netten","doi":"10.1109/ITSC.2010.5625133","DOIUrl":"https://doi.org/10.1109/ITSC.2010.5625133","url":null,"abstract":"The effects of Cooperative Adaptive Cruise Control (CACC) on traffic flow is an important issue as traffic flow stability, capacity and safety are concerned. In contrast to most research we focus on traffic flow stability. We use the Intelligent Driver Model and CACC algorithms to assess the effects. A recently field-tested and CACC-based advisory system is also evaluated as an intermediate solution. It is found that CACC can quickly damp shockwaves at lower penetration rates (50%) and that shockwaves move faster.","PeriodicalId":176645,"journal":{"name":"13th International IEEE Conference on Intelligent Transportation Systems","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121968492","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}
{"title":"I2V and V2V communication based VANET to optimize fuel consumption at traffic signals","authors":"Kumar P. Sanketh, S. Subbarao, Kushal A. Jolapara","doi":"10.1109/ITSC.2010.5625163","DOIUrl":"https://doi.org/10.1109/ITSC.2010.5625163","url":null,"abstract":"Traffic signals have become an invaluable tool in ensuring smooth flow of motor vehicles at intersections. But where we gain in terms of orderly flow of traffic, we lose out in fuel wastage and pollution. This is because people often leave the engine of their vehicle running while waiting at signals. In this paper, we propose a system that targets this problem. By creating a channel of communication between the traffic signal and the vehicle, we can ensure that the engine is shut off automatically. Various parameters are taken into consideration during the controlling of the engine start-stop action. When these parameters are found to be within a given set of conditions, the engine is shut off. If any one of these parameters changes, the engine is turned on automatically, saving the driver the hassle of turning the engine on manually.","PeriodicalId":176645,"journal":{"name":"13th International IEEE Conference on Intelligent Transportation Systems","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122481266","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}
J. Villagrá, V. M. Montero, Joshué Pérez, Carlos González
{"title":"Model-free control techniques for Stop & Go systems","authors":"J. Villagrá, V. M. Montero, Joshué Pérez, Carlos González","doi":"10.1109/ITSC.2010.5625228","DOIUrl":"https://doi.org/10.1109/ITSC.2010.5625228","url":null,"abstract":"This paper presents a comparison of Stop & Go control algorithms, which deal with car following scenarios in urban environments. Since many vehicle/road interaction factors (road slope, aerodynamic forces) and actuator dynamics are very poorly known, two robust control strategies are proposed: an intelligent PID controller and a fuzzy controller. Both model-free techniques will be implemented and compared in simulation to show their suitability for demanding scenarios.","PeriodicalId":176645,"journal":{"name":"13th International IEEE Conference on Intelligent Transportation Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123207526","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}
Sangjun Park, Hesham A Rakha, M. Farzaneh, J. Zietsman, Doh-Won Lee
{"title":"Development of fuel and emission models for high speed heavy duty trucks, light duty trucks, and light duty vehicles","authors":"Sangjun Park, Hesham A Rakha, M. Farzaneh, J. Zietsman, Doh-Won Lee","doi":"10.1109/ITSC.2010.5624972","DOIUrl":"https://doi.org/10.1109/ITSC.2010.5624972","url":null,"abstract":"The current state-of-practice emission modeling tools, namely: MOBILE, EMFAC, the Comprehensive Modal Emission Model (CMEM), and VT-Micro model do not provide reliable emission estimates for high speeds greater than 80 mph since the models do not have supporting data at these high speeds. Consequently, the research presented in this paper gathers field data and develops models for the estimation of fuel consumption, carbon dioxide (CO2), carbon monoxide (CO), nitric oxide (NO), nitrogen dioxide (NO2), nitrogen oxides (NOX), hydrocarbon (HC), and particulate matter (PM) emissions at high speeds. A total of nine vehicles including three semi-trucks, three pick-up trucks, and three passenger cars are tested on a nine-mile test track in Pecos, Texas. The fuel consumption and emission rates are measured using two portable emission measurement systems. Models are developed using these data, producing minimum errors for fuel consumption, CO2, NO2, HC, and PM emissions. Alternatively, the NO and NOX emission models produce the highest errors with the least degree of correlation. The study demonstrates that the newly constructed models overcome the shortcomings of the state-of-practice models and can be utilized to evaluate the environmental impacts of high speed vehicles.","PeriodicalId":176645,"journal":{"name":"13th International IEEE Conference on Intelligent Transportation Systems","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123276311","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}
{"title":"Platooning of autonomous vehicles with intervehicle communications in SUMO traffic simulator","authors":"Pedro Fernandes, U. Nunes","doi":"10.1109/ITSC.2010.5625277","DOIUrl":"https://doi.org/10.1109/ITSC.2010.5625277","url":null,"abstract":"An approach to increase road capacity consists in making vehicles move much closer to each other, i.e. using platoons, and to avoid the constant stop-and-go in urban traffic. This paper addresses the studies of new models to allow the research of cooperative and autonomous communication-enabled vehicles, with platooning capabilities, and the addition of new features in SUMO (Simulation for Urban MObility) to allow the simulation of those models. Simulations results of vehicle platoons using constant spacing instead of the more common constant time headway, with intervehicle communications, are reported in the paper. The platoon leaders are controlled by an external application and the simulation platform works at the subsecond level.","PeriodicalId":176645,"journal":{"name":"13th International IEEE Conference on Intelligent Transportation Systems","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123791279","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}
István Haller, C. Pantilie, T. Mariţa, S. Nedevschi
{"title":"Statistical method for sub-pixel interpolation function estimation","authors":"István Haller, C. Pantilie, T. Mariţa, S. Nedevschi","doi":"10.1109/ITSC.2010.5625173","DOIUrl":"https://doi.org/10.1109/ITSC.2010.5625173","url":null,"abstract":"Depth accuracy is one of the most important characteristics for sensors used in distance estimation. Stereo-vision systems employ sub-pixel interpolation to achieve such accuracy. Literature in this domain is usually dedicated to simple window based stereo solutions. There are currently several new stereo algorithms developed to counter pixel level errors, but they neglect sub-pixel results. We propose the use of function fitting to generate interpolation functions optimized for each algorithm type. Dedicated interpolation functions require the mathematical model of the algorithm. In the proposed methodology of generating the interpolation function the explicit model of the stereo algorithm is replaced by modeling the data distribution resulted from a pre-defined input. Several transformations are also proposed to reduce the dimensionality of the fitting data without loosing any information. The most accurate match for the fitting data-set was a sinusoidal function, a novel shape for sub-pixel interpolation. The function shows a significant improvement compared to legacy solutions, by reducing the error magnitude by several factor for both synthetic and real scenarios. sf]Y","PeriodicalId":176645,"journal":{"name":"13th International IEEE Conference on Intelligent Transportation Systems","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130550788","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}
{"title":"The effects of the control and prediction horizons on the urban traffic regulation","authors":"Sofiene Kachroudi, S. Mammar","doi":"10.1109/ITSC.2010.5625056","DOIUrl":"https://doi.org/10.1109/ITSC.2010.5625056","url":null,"abstract":"The paper studies the effects of control and prediction horizons on a multimodal traffic regulation strategy. The strategy acts on traffic lights in order to regulate Private Vehicle (PV) traffic by minimizing their number in the network and to regulate the Public Transport (PT) traffic by maximizing their schedule adherence. The strategy architecture is based on an automatic closed loop and uses the principles of the General Model predictive Control (GMPC). The GMPC defines two blocs : the prediction bloc and the optimizer. The predictor is based on two models belonging to PV and PT traffic. These two models balance simplicity and accuracy. The optimizer is based on the Particle Swarm Optimization, a powerful metaheuristic, that resolves a bi-objective optimization problem. The problem, as it is formulated within GMPC architecture, evolves control and prediction horizons. The simulation study focuses on these two important parameters and their effects on the traffic regulation efficiency.","PeriodicalId":176645,"journal":{"name":"13th International IEEE Conference on Intelligent Transportation Systems","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133974459","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}