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1.
在简要介绍我国ITS体系框架开发的研究背景、概念、内容的基础上,针对我国ITS体系框架的开发方法、开发思路及开发步骤做出详细说明,旨在全面了解我国ITS的开发研究理念与过程,为今后ITS技术的实施奠定基础。  相似文献   

2.
面向ITS的GIS研究与设计   总被引:6,自引:2,他引:6  
地理信息系统在智能交通系统中起着重要作用,是基础子系统和功能子系统的集成。在面向ITS的GIS设计中,系统框架采用B S结构,系统功能分为4部分:数据采集、数据管理、空间分析和系统维护与刷新。在此基础上设计图层和数据库,并给出应用界面。这样的设计是合理和可行的,已经用于兰州市智能交通系统建设中。文章最后还列举了面向ITS的GIS亟需解决的问题。  相似文献   

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4.
深圳市综合交通信息平台系统分析与设计   总被引:5,自引:4,他引:5  
简述国外先进的交通信息系统的发展现状,在分析深圳市智能交通系统间的信息交互需求、共用信息平台功能需求、性能需求的基础上,根据深圳市现有智能交通系统的建设和运营现状,对深圳市综合交通信息平台系统框架结构、功能模块分别进行设计。  相似文献   

5.
    
《智能交通系统杂志
2012,16(3-4):187-207
Abstract

Communication of information from the roadway infrastructure to vehicles is expected to enhance Automated Highway Systems (AHS) by supporting subsystem functions like vehicle motion control, multiple vehicle coordination, and vehicle navigation. A suitable communication channel is information coding in the lateral reference used for automatic steering and lane keeping control, e.g. in the magnet reference system used by California PATH (Partners for Advanced Transit and Highways). The presented coding strategy was designed for and tested at the 1–15 test track near San Diego, CA, being prepared for the AHS demonstration of the National AHS Consortium (NAHSC) held in Aug. 1997. A number of aspects are discussed, concerning types and structure of coded information, encoding and decoding schemes, and possible future extensions.  相似文献   

6.
智能交通系统中地理信息系统的研究   总被引:35,自引:2,他引:35  
概述了中国智能交通系统(Intelligent Transportation Systems,ITS)研究开发的内容和地理信息系统(Geographie Information System,GIS)的概念,阐述了GIS数字化的制作过程以及GIS数据库的设计原则,最后详细分析了GIS技术在ITS中的应用功能。开发研究ITS中的GIS技术,可以加强道路、车辆、驾驶员以及管理人员的联系,实现道路交通管  相似文献   

7.
综合交通信息平台发展状况与趋势研究   总被引:7,自引:1,他引:7  
近年来,集成化成为智能交通系统发展的主要趋势之一,而综合交通信息平台则是实现其集成化的重要途径。首先分析综合交通信息平台在未来智能交通系统中的地位和作用,随后介绍目前国内外综合交通信息平台的发展现状,包括美国、日本、欧洲、新加坡等国家和地区,然后分析综合交通信息平台的几大发展趋势:集成化、智能化、信息化、网络化、创新性,以及关键点之一———标准化,以期为我国综合交通信息平台的发展提供借鉴。  相似文献   

8.
智能交通系统标准体系研究   总被引:8,自引:1,他引:8  
我国智能交通系统领域的标准化工作起步较晚,为促使相关标准的组成达到结构合理、层次分明、科学有序,明确工作重点和努力方向,需要制定ITS标准体系。本文介绍了ITS标准体系研究的背景,分析了国际及国外主要发达国家和地区的相关标准化状况,提出ITS标准体系覆盖范围应考虑标准化所带来的利益与风险,提出了体系结构层次确定的原则、具体结构层次及标准要素集群,并制定了ITS标准明细表。  相似文献   

9.
当前车辆自适应巡航系统响应速度慢,无法在高速巡航中兼顾通行效率与安全性。为提高车辆自适应巡航过程中的响应速度,让车辆巡航行驶时所需的控制信息能够在交通流中实时传递,将基于第五代移动通信技术的车载自组网融入到车辆自适应巡航系统之中,提出 一种基于第五代移动通信技术的协同自适应巡航系统及控制方法。该方法能够实时将车辆状 态信息通过通信同步至区域范围内的其它车辆,实现信息共享,获取超视距的路况信息。仿真实验表明,第五代移动通信技术的低延时高带宽及优秀的用户接入量支持特性,可以有效地应用于自适应巡航控制系统中,提升跟随车辆的响应速度,缩短跟车间距,达到通行效率 与安全性的有机结合。  相似文献   

10.
11.
介绍交通模式的定义及识别,结合实际项目构建了一种基于模式识别的自适应区域信号协调控制系统,给出了系统的结构及工作原理,讨论了交通模式识别过程中的若干关键问题。  相似文献   

12.
    
Many Intelligent Transportation Systems (ITS) applications require some form of location information. For example, traveler information services and traffic management are both critically dependent on the specification of location(s). Some ITS applications may need this information in finer resolution than others as demonstrated by the navigation and route guidance systems vs. severe weather warnings for a local area. A location can be a street address, a highway segment, an intersection, a stretch of roadway or a small geographical area. These types of locations can be coded in various ways. In this paper, we first examine several coding schemes reported in the literature and/or used in real applications. Then, we propose a new location coding scheme based on the first three digits of the Zipcode plus local information. This scheme uniquely represents all useful types of locations and is versatile and efficient. Moreover, it fits well the location reference message protocol (LRMP) described in [Goodwin et al., 1995; Goodwin and Xiong, 1994]. To demonstrate its utility and power, we compare the proposed scheme with the Road Name ID scheme [Ramakrishnan et al., 1994].  相似文献   

13.
    
《智能交通系统杂志
2012,16(2):167-180
Abstract

This paper documents the assessment of the information requirements for the development of an Integrated Transit/Traffic Management and Traveler Information System. The identification of information requirements represents one of several phases of the information gathering process which was necessary to evaluate the suitability of available technologies, IVHS elements, and architectures for the design of an operational test of the integration of transit and traffic management and traveler information system. The integration design includes the automated transfer of operations and management information between agencies and to the public in order to realize efficiencies in the transportation network.

The paper details the information requirements of three public agencies involved in transportation management together with transportation information requirements of the traveling public. Availability of the required data is assessed and existing and potential data sources are identified.  相似文献   

14.
本文阐述了利用奥地利AVL公司开发的Cruise(V3.0)软件进行纯电动汽车整车建模、制定仿真计算任务、运行计算并分析计算结果等的具体方法。着重介绍了Cruise、Matlab\Simulink联合仿真技术,从而将整车控制策略、电源管理策略、电机控制策略和制动回收策略应用到仿真技术中的过程和方法。  相似文献   

15.
    
《智能交通系统杂志
2012,16(3):225-259
This paper provides an attempt at evaluating the safety impacts of an Adaptive Cruise Control (ACC) system relative to Conventional Cruise Control (CCC) utilizing data that were gathered as part of a Field Operational Test (FOT) in Ann Arbor, Michigan. The safety of the ACC system is quantified considering three surrogate safety measures. The first safety measure considers the car-following behavior of an ACC system relative to manual driving in order to identify potential differences in driver/vehicle aggressiveness. The second safety measure considers changes in demands on driver resources associated with ACC technology. The third, and final safety measure, considers differences in the number of braking maneuvers and near encounters associated with ACC and CCC driving. These three surrogate safety measures are utilized to identify any potential hazards that could be associated with an ACC system.

The three surrogate safety measures demonstrate consistency between ACC and manual car-following behavior, an increased usage of cruise control with adaptive features, reductions in driver manual resources and potential reductions in visual resources, and no differences in braking interventions and \"near encounters.\" These findings collectively suggest that the use of ACC does not appear to impose a safety hazard on transportation system.  相似文献   

16.
User-centric intelligent mobility businesses emerge and prosper in Asian metropolitan areas by utilizing the progress if information and communication technology (ICT). Under the rise of private lead initiatives on intelligent transport systems (ITS), the roles of public sectors are still large. Public sectors should precisely identify the extensive ITS services by considering the regional conditions and deploy them by collaboration between the public and private. Public sectors also are strongly encouraged to identify the benefits acquired by development and compliance of the international technical standards. Furthermore, in order to maximize the potential capacity of ICT, improvements of social infrastructures are required by the public sectors together with private businesses. With the realization of the collaboration works, Asian regions are well deserved to take the lead in future ITS initiatives.  相似文献   

17.
基于无线定位技术的交通信息获取方法研究   总被引:2,自引:1,他引:1  
胡坚明  宋靖雁  李伟 《公路交通科技》2007,24(10):113-117,122
基于无线定位技术的交通信息获取方法是一种应用前景良好的交通信息获取方法。在考虑该方法所涉及各方面问题的基础上,给出了一种适合我国混合交通状况的应用无线定位技术获取交通信息的方法。首先阐述了应用无线定位技术获取交通信息的工作原理及系统框架,进而通过实测获取处于通话状态的移动台在越区切换过程中的切换点数据,并分析切换点的分布特征。在该特征的基础上,应用PARAMICS软件构建仿真环境,设计仿真方案,进行仿真试验,以评价该方法的有效性和实用性。仿真试验的结果表明,基于无线定位技术的交通信息获取方法能够获取相当精度的交通信息。  相似文献   

18.
城市交通流信息相似性分析与研究   总被引:11,自引:3,他引:11  
信息处理日益成为智能交通系统发展中的一个重要环节,它要求智能交通系统不断集成新的信息技术以实现信息的采集、融合、组织和处理。生物信息技术在ITS信息处理中的应用成为其中新兴的研究方向。为证明交通信息具有生物遗传属性,本文定义了相似系数及波动系数作为交通流的相似性判据,并对城市交通流单点流量信息在时间轴上的相似性进行实验与数据分析,从而证明了其相似性的存在。文章还对该特性在交通流信息处理中的几种可能应用进行了分析和讨论。  相似文献   

19.
提出一种新的基于人工智能的感知 计划 动作agent结构实现智能车辆自动驾驶的方案。首先通过描述该结构的原理说明该结构可以解决自动驾驶中存在的一些问题,接着通过建立自动驾驶知识库阐述如何具体实现自动驾驶,最后通过仿真实验验证该方法能够为智能车辆实现自动或辅助驾驶提供一种非常有效的机制。  相似文献   

20.
结合山东省公路网联网收费的实际情况,建立了山东省公路网收费费率的双层规划模型,以描述路网管理者、收费道路经营者和车辆用户三者在费率决策中的博弈关系。采用弹性需求模式下的收费费率双层规划模型,选取山东省联网收费的一个路网,利用模拟退火和遗传算法的混合算法,对模型进行了应用和分析。验证结果表明,利用这种收费道路费率优化算法,不仅可以保证道路经营者能实现财务目标,而且能有效地均衡路网交通流量。  相似文献   

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