基于交通安全设施工程施工质量的控制策略分析

交通安全不仅关系着民生问题,还在一定程度上影响着我国的经济发展水平。为了确保交通安全设施发挥其实际价值,从公路交通安全设施工程施工、影响交通安全设施工程施工质量的主要因素等角度展开研究,并针对相关问题分析了交通安全设施工程施工质量控制策略,可供参考。     

基于交通安全设施质量检测分析

交通安全设施质量检测是确保道路交通安全的关键。为提升交通安全设施质量检测水平,围绕交通安全设施质量检测的方法与问题展开分析。首先,从提高交通安全水平、保障道路交通畅通、降低维护成本和提高公众满意度四个角度分析交通安全设施质量检测的意义;其次,提出当前存在的一些问题;最后,总结提高检测质量的策略,包括建立统一的检测标准与规范、推广先进技术与设备、加强人才培养与队伍建设等,以期提高交通安全设施质量检测的准确性和有效性。     

论提升高速公路交通安全设施设计理念

介绍了高速公路交通安全设施设计的理念和设计原则、方案,并以特殊路段设计实例论证了交通安全以人为本的安全设施设计理念.     

改扩建公路工程交通安全设施设计探究

交通安全设施对道路建设规整度提升有着不可替代的作用,也对车辆驾驶人员的生命财产安全有重要的影响。本文针对公路改扩建工程交通安全设施工作面广、量大的特点,对公路安全标志、标线和护栏的位置、形式等安全设施的设计进行探究。在交通安全设施设计时,必须对道路的基础信息进行精确掌握,涉及的方面应全面,以确保交通安全设计工作更加完善,更加科学合理。     

靖西至龙邦高速公路交通安全设施工程施工分析

文章以靖西至龙邦高速公路工程为例,分析了交通安全设施配置与施工面临的重难点,并论述了各种交通安全设施的施工技术措施,供类似项目参考。     

高速公路交通工程安全设施施工现场处置探讨

高速公路交通安全设施是高速公路建设的最后环节,不仅为道路使用者提供安全、舒适、便捷的作用,也对使用者提供轻松、愉快的行车休闲环境的功能,并向道路使用者提供道路各种信息。由于施工周期内,现场情况变化多端,交通安全设施的建设有许多问题,本文介绍了部分交通安全设施施工现场处置办法、措施,希望在满足国家相关技术标准、规范和设计要求的前提下,使交通工程设施建设更加合理,更符合道路使用者的需求,更能与周边环境融合。     

城市道路交通安全设施对交通安全的影响及具体对策

在我国城镇化稳步发展的进程中,日渐构建了相对完善的道路交通网络。为了营造安全的交通环境,重点分析道路交通安全设施对交通安全的影响,并针对城市道路交通安全设施存在的问题提出相应的工作对策,对实际工作具有指导意义。     

我国道路交通安全意识建设迫在眉睫

本文在对我国道路交通安全意识建设紧迫性与必要性分析的基础上,指出教育是提高国民交通安全意识的基础,工程设施完善为交通安全意识建设提供良好的氛围以及紧急救援体系对交通安全意识提升的重要性。     

广西山区高速公路隧道交通安全设施设置应用研究

文章基于隧道路段交通事故主要形态类型、原因以及易发区域,结合隧道路段实际情况,提出了隧道路段交通安全设施优化设计具体方案:在隧道入口路段设置混凝土防撞翼墙与SB级波形梁钢护栏、横向震动减速标线、纵向振荡标线、彩色防滑路面等交通安全设施;在桥隧相连路段采用防撞垫与防撞砂桶有效组合的方式进行安全防护;在隧道内设置反光环、主动发光轮廓标、蓄能发光涂料等交通安全设施,可达到行车安全、降低运营成本、提高经济效益的目的。     

浅析交通安保工程实施的必要性

交通安全设施是道路重要附属设施,它直接关系到道路的运营状况.交通部提出在国省道干线上组织实施"消除隐患,珍视生命"为主题的公路安全保障工程,现就我省国省道干线交通安全实施工程的必要性进行分析探讨.     

学校周边道路交通管理设施设置研究

文章分析了学校周边道路交通特性和学生过街交通行为特性,并结合学校周边交通管理设施设计原则,提出了一套人性化、完善的设施设置方法,为提高学生上下学过街安全性,引导过往车辆顺畅通行,完善交通管理设施设置方法提供参考。     

高速公路改扩建工程交通安全设施设计探讨

文章以柳南高速公路改扩建工程为例,分析了高速公路改扩建期间交通安全设施设置的基本要求,并针对标志、标线和护栏对安全设施的设计进行了探讨,提出了具体的设置方案。     

重庆桥梁交通安全状况调查与改善技术研究

频繁发生的客车坠桥事故造成了重大的人员伤亡和财产损失,提高桥梁运营安全水平工作十分迫切。文章在对重庆市桥梁交通安全状况调查的基础上,分析了桥梁路段在设计、管理、交通运行等方面存在的问题,提出从桥头视距、道路养护、警示设施设置、中央分隔带设置等方面进行综合整治的安全改善措施,为桥梁的安全设计与管理提供参考。     

Fine-tuning ADAS algorithm parameters for optimizing traffic safety and mobility in connected vehicle environment

Under the Connected Vehicle environment where vehicles and road-side infrastructure can communicate wirelessly, the Advanced Driver Assistance Systems (ADAS) can be adopted as an actuator for achieving traffic safety and mobility optimization at highway facilities. In this regard, the traffic management centers need to identify the optimal ADAS algorithm parameter set that leads to the optimization of the traffic safety and mobility performance, and broadcast the optimal parameter set wirelessly to individual ADAS-equipped vehicles. Once the ADAS-equipped drivers implement the optimal parameter set, they become active agents that work cooperatively to prevent traffic conflicts, and suppress the development of traffic oscillations into heavy traffic jams. Measuring systematic effectiveness of this traffic management requires am analytic capability to capture the quantified impact of the ADAS on individual drivers’ behaviors and the aggregated traffic safety and mobility improvement due to such an impact. To this end, this research proposes a synthetic methodology that incorporates the ADAS-affected driving behavior modeling and state-of-the-art microscopic traffic flow modeling into a virtually simulated environment. Building on such an environment, the optimal ADAS algorithm parameter set is identified through a multi-objective optimization approach that uses the Genetic Algorithm. The developed methodology is tested at a freeway facility under low, medium and high ADAS market penetration rate scenarios. The case study reveals that fine-tuning the ADAS algorithm parameter can significantly improve the throughput and reduce the traffic delay and conflicts at the study site in the medium and high penetration scenarios. In these scenarios, the ADAS algorithm parameter optimization is necessary. Otherwise the ADAS will intensify the behavior heterogeneity among drivers, resulting in little traffic safety improvement and negative mobility impact. In the high penetration rate scenario, the identified optimal ADAS algorithm parameter set can be used to support different control objectives (e.g., safety improvement has priority vs. mobility improvement has priority).     

The impact of signal control on land-side traffic patterns at the Dallas/Fort worth airport

The Parkway Corridor is the primary ground facility at the Dallas/Fort Worth (D/FW) International Airport. It consists of an expressway for passengers to-and-from terminals and a service road mainly for employees of airline-associated agencies to access the service areas. As the Parkway Corridor is a natural short cut in the region, it has attracted more and more through commuters who usually choose to use the service road so as to circumvent the toll plazas on the expressway. The dramatic increase in both the volume and speed of through commuting traffic in recent years not only impedes service activities, but also raises safety concerns. The D/FW Airport Board is considering the installation of a series of traffic signals to regulate the cruise speed and thereby discourage use of the service road by commuters. This research is conducted to evaluate its effectiveness and potential impact on traffic patterns along the Parkway Corridor. A systematic approach, integrating queueing theories (G/M/m), discrete models, and traffic assignment, is proposed in this research, which allows the user to project the traffic distribution on each route with only the information obtained by traffic counts. Numerical results of alternate control strategies and a sensitivity analysis with respect to key parameters, such as the toll and cycle length of traffic signals are also reported.     

A study on smart parking guidance algorithm

Parking problem becomes one of major issues in the city transportation management since the spatial resource of a city is limited and the parking cost is expensive. Lots of cars on the road should spend unnecessary time and consume energy during searching for parking due to limited parking space. To cope with these limitations and give more intelligent solutions to drivers in the selection of parking facility, this study proposes a smart parking guidance algorithm. The proposed algorithm supports drivers to find the most appropriate parking facility considering real-time status of parking facilities in a city. To suggest the most suitable parking facility, several factors such as driving distance to the guided parking facility, walking distance from the guided parking facility to destination, expected parking cost, and traffic congestion due to parking guidance, are considered in the proposed algorithm. To evaluate the effectiveness of the proposed algorithm, simulation tests have been carried out. The proposed algorithm helps to maximize the utilization of space resources of a city, and reduce unnecessary energy consumption and CO₂ emission of wandering cars since it is designed to control the utilization of parking facility efficiently and reduce traffic congestion due to parking space search.     

Joint optimization of freight facility location and pavement infrastructure rehabilitation under network traffic equilibrium

Establishment of industry facilities often induces heavy vehicle traffic that exacerbates congestion and pavement deterioration in the neighboring highway network. While planning facility locations and land use developments, it is important to take into account the routing of freight vehicles, the impact on public traffic, as well as the planning of pavement rehabilitation. This paper presents an integrated facility location model that simultaneously considers traffic routing under congestion and pavement rehabilitation under deterioration. The objective is to minimize the total cost due to facility investment, transportation cost including traffic delay, and pavement life-cycle costs. Building upon analytical results on optimal pavement rehabilitation, the problem is formulated into a bi-level mixed-integer non-linear program (MINLP), with facility location, freight shipment routing and pavement rehabilitation decisions in the upper level and traffic equilibrium in the lower level. This problem is then reformulated into an equivalent single-level MINLP based on Karush–Kuhn–Tucker (KKT) conditions and approximation by piece-wise linear functions. Numerical experiments on hypothetical and empirical network examples are conducted to show performance of the proposed algorithm and to draw managerial insights.     

公路隧道交通安全措施探索

保障公路隧道的交通安全不仅事关隧道内司乘人员的生命安全,对隧道本身的结构安全同样有很大的影响。从公路隧道的总体设计、交通工程设施、防火、隧道内装、洞口增减光设施、火灾的预防与救援、隧道的运营管理、宣传教育和交通法规等多方面对影响公路隧道交通安全的因素和相关措施进行了探讨,旨在为公路隧道交通安全措施的研究提供一些思路。     

基于潜在冲突量的交叉口安全评价方法研究

文章提出了潜在冲突量的概念,并对其进行了分类,通过车速、交通量、车道宽度等易获取的交通参数来推算交叉口潜在冲突量,引入混合交通当量,将潜在冲突量与混合交通当量比值作为交叉口安全评价的指标,并结合桂林市的9个交叉口进行了安全程度的评价。     

弯道诱发道路交通安全事故分析

道路交通安全关乎我们的切身利益,其诱发因素颇多,而弯道是交通安全事故高发地。文章从汽车行驶特性、不良视距、会车超车等方面入手,分析弯道诱因与交通安全事故间的内在关系,并提出了基于GPS、GIS信息系统工程的智能交通预警思路,为交通安全控制提供理论参考依据。