2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)最新文献_第9页

Scaling up impact assessment results through statistics and simulation 通过统计和模拟扩大影响评估结果

2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC) Pub Date : 2011-11-18 DOI: 10.1109/ITSC.2011.6082842

M. Noort, E. Jonkers, W. Haak, T. Ouboter

{"title":"Scaling up impact assessment results through statistics and simulation","authors":"M. Noort, E. Jonkers, W. Haak, T. Ouboter","doi":"10.1109/ITSC.2011.6082842","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082842","url":null,"abstract":"For a successful introduction of Intelligent Transport Systems (ITS) it is important to determine (socio-economic) impacts and societal costs and benefits of these systems beforehand, and to develop business models. Governments usually make investment decisions based on these aspects. In the field of ITS tools exist for the separate parts of this analysis, but an integrated tool that combines impact assessment, cost benefit analysis and business modelling is lacking. A crucial step in such an integrated tool is scaling up: translating small scale traffic effects to large scale societal benefits. Traffic effects are usually determined in an experiment, for example a Field Operational Test or micro simulation, for scenarios limited in time and geographical scale. A societal cost benefit analysis demands results on for example country or EU level, for a whole year. In practice little attention is paid to the methodology for scaling up. In the European project ITS Test Beds TNO has developed a practical methodology for scaling up, integrating the tools for micro simulation and cost benefit analysis using statistics. Another way of scaling up small scale traffic effects is using macro simulation. This paper describes the problems that play a role in scaling up, and works out the two mentioned scaling up methods. An illustration of scaling up with statistics is given with a case study on Speed Alert.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"305 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124349643","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}

引用次数: 1

Exploring spatial characteristics of urban transportation networks 探索城市交通网络的空间特征

2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC) Pub Date : 2011-11-18 DOI: 10.1109/ITSC.2011.6083062

Yuxuan Ji, N. Geroliminis

{"title":"Exploring spatial characteristics of urban transportation networks","authors":"Yuxuan Ji, N. Geroliminis","doi":"10.1109/ITSC.2011.6083062","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6083062","url":null,"abstract":"It has been shown recently that a Macroscopic Fundamental Diagram (MFD) exists in urban transportation networks under certain conditions. However, MFD is not universally expected. Previous research demonstrates the existence of MFDs in homogeneous networks with similar link densities. More recent work focuses on the partitioning of a heterogeneous transportation network based on different congestion levels. A desired partitioning produces homogeneous regions with similar link densities to guarantee a well-defined MFD and spatially compact shapes to ease the implementation of control measurements [1]. Based on recently proposed partitioning mechanism, this paper further explores the spatial characteristics of sub-networks (sub-regions or clusters) in urban transportation networks. In this paper, a metric is defined to evaluate the spatial compactness of each cluster in the network. In order to obtain the metric, a fast graph traversal algorithm is proposed, which can produce a clockwise sequence for the spatially coordinated boundary nodes along a network. The algorithm takes O(n) and the effectiveness is proved and validated. By applying the boundary smoothness metric to our previous clustering results, we show that the spatial compactness is appropriately guaranteed for each region and the future control policies can therefore be easily implemented based on the partitioning and MFDs. The proposed algorithms can have more general applications in fields of network and graph theory.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129401334","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}

引用次数: 5

Vehicle lane keeping control based on piecewise affine regions 基于分段仿射区域的车辆车道保持控制

2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC) Pub Date : 2011-11-18 DOI: 10.1109/ITSC.2011.6082817

André Benine-Neto, S. Scalzi, S. Mammar

引用次数: 2

Applying availability SLAs to traffic management systems 将可用性sla应用于流量管理系统

2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC) Pub Date : 2011-11-18 DOI: 10.1109/ITSC.2011.6082941

Christoph Stögerer, I. Brandić, Vincent C. Emeakaroha, W. Kastner, T. Novak

{"title":"Applying availability SLAs to traffic management systems","authors":"Christoph Stögerer, I. Brandić, Vincent C. Emeakaroha, W. Kastner, T. Novak","doi":"10.1109/ITSC.2011.6082941","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082941","url":null,"abstract":"For today's Traffic Management Systems (TMS), availability is a key concern. Failures in the system limit its availability and have direct impact on the total cost of ownership (TCO) through additional maintenance costs. Therefore, availability parameters are often subject of contracts (so called Service Level Agreements (SLAs)) between system owners, maintenance contractors, and component vendors. With the growing complexity of such systems by means of multi-vendor environments consisting of various subsystems and components interconnected over numerous levels of hierarchy, enforcement of these agreements is getting a complex task. Therefore, advanced SLA enactment strategies are necessary, which include appropriate concepts that support the mapping of low-level resource metrics like the up- and down-time of a particular component to high-level application specific SLA-parameters (such as system availability). In this paper, we show the application of the LoM2HiS framework as an example technology for the automatic enforcement of availability SLAs in the field of TMS. We discuss possible SLAs for TMS and the required adoptions to the framework in order to meet the application-specific needs. Finally, we present first simulation results.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127907190","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}

引用次数: 5

Surround view pedestrian detection using heterogeneous classifier cascades 使用异构分类器级联的环视行人检测

2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC) Pub Date : 2011-11-18 DOI: 10.1109/ITSC.2011.6082895

Markus Gressmann, G. Palm, O. Löhlein

{"title":"Surround view pedestrian detection using heterogeneous classifier cascades","authors":"Markus Gressmann, G. Palm, O. Löhlein","doi":"10.1109/ITSC.2011.6082895","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082895","url":null,"abstract":"Pedestrian detection is of particular interest to the automotive domain, where an accurate estimation of a pedestrian's position is the first step towards reliable collision avoidance systems. Driven by rapid advances in technology, several systems to detect pedestrians in front of a moving vehicle have been proposed in recent years. This paper introduces a novel pedestrian detection system for low-speed driving scenarios, capable of detecting pedestrians in a 360-degree fashion around the vehicle. Detected pedestrians are displayed to the driver in an intuitive way using a dynamically generated Birds's Eye View image. Furthermore, a novel classifier architecture to efficiently handle this complex application scenario is provided. By combining the processing speed of a classifier cascade with the discriminative power of a multi-stage neural network, the system achieves state of the art performance while retaining real-time capability. To keep classifier complexity low, a new feature-based inter-stage information transfer method is presented. All classifier components are compared to recent pedestrian detection approaches and evaluated on a real-world data set.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114286613","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}

引用次数: 33

Evaluating active traffic and demand management strategies for congested tourism traffic corridor 拥挤旅游交通走廊的主动交通与需求管理策略评价

2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC) Pub Date : 2011-11-18 DOI: 10.1109/ITSC.2011.6082860

Hong Zheng, E. Nava, Y. Chiu

引用次数: 4

Arterial travel time estimation based on vehicle re-identification using magnetic sensors: Performance analysis 基于磁传感器车辆再识别的动脉行程时间估计:性能分析

2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC) Pub Date : 2011-11-18 DOI: 10.1109/ITSC.2011.6083003

R. Sanchez, Christopher Flores, R. Horowitz, R. Rajagopal, P. Varaiya

{"title":"Arterial travel time estimation based on vehicle re-identification using magnetic sensors: Performance analysis","authors":"R. Sanchez, Christopher Flores, R. Horowitz, R. Rajagopal, P. Varaiya","doi":"10.1109/ITSC.2011.6083003","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6083003","url":null,"abstract":"Two versions of an arterial travel time estimation method based on vehicle re-identification using wireless magnetic sensors were studied across an arterial segment with multiple intersections. Both methods are based on the same travel time estimation system, but one of them uses the so called original signal processing algorithm while the other one uses a recently modified version of it. Both methods were tested on a 0.51 km (0.32 mile)-long segment of West 34th Street in New York, NY, under harsh driving conditions (i.e. right after a winter storm). The original and modified system results were compared against ground truth data obtained from video. Based on the ground truth data it was possible to determine the travel time distribution and the percentage of vehicles that each of the different methods was able to re-identify. During an analysis period of 45 minutes, 318 vehicles were registered to go across the arterial segment. The original method has a 62% re-identification rate, while the modified method has a 69% rate. Based on comparisons of travel time distribution and empirical cumulative distribution functions, it was observed that the modified method travel time distribution is closely related to the ground truth distribution, while the original method significantly diverges from the ground truth at long travel times.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114322333","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}

引用次数: 8

System and analytics for continuously assessing transport systems from sparse and noisy observations: Case study in Dublin 从稀疏和嘈杂的观测中持续评估交通系统的系统和分析:都柏林的案例研究

2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC) Pub Date : 2011-11-18 DOI: 10.1109/ITSC.2011.6082982

L. Gasparini, E. Bouillet, Francesco Calabrese, O. Verscheure, Brendan O'Brien, Maggie O'Donnell

引用次数: 16

Development of lane change driver model for closed-loop simulation of the active safety system 主动安全系统变道驾驶员闭环仿真模型的建立

2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC) Pub Date : 2011-11-18 DOI: 10.1109/ITSC.2011.6083039

Taeyoung Lee, Beomjun Kim, K. Yi, C. Jeong

引用次数: 15

Asynchronous real-time framework for knowledge-based intersection assistance 基于知识的交叉口辅助异步实时框架

2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC) Pub Date : 2011-11-18 DOI: 10.1109/ITSC.2011.6082810

Michael Hülsen, Johann Marius Zöllner, Nino Haeberlen, Christian Weiss

引用次数: 7