The impact of traffic sign deficit on road traffic accidents in Nigeria

This study assesses the impact of traffic sign deficit on road traffic accidents in Nigeria. The participants were 720 commercial vehicle drivers. While simple random sampling was used to select 6 out of 137 federal highways, stratified random sampling was used to select six categories of commercial vehicle drivers. The study used qual-dominant mixed methods approach comprising key informant interviews; group interviews; field observation; policy appraisal and secondary literature on traffic signs. Result shows that the failure of government to provide and maintain traffic signs in order to guide road users through the numerous accident black spots on the highways is the major cause of road accidents in Nigeria. The study argues that provision and maintenance of traffic signs present opportunity to promoting safety on the highways and achieving the sustainable development goals.     

Rural traffic management: The Burrator Reservoir experiment

The introduction of traffic management schemes has been one response of the National Parks to the problem of ever-increasing car-borne visitors and the consequent damage caused to the rural environment. By reviewing these schemes and by determining and explaining attitudes towards one particular traffic management experiment, the paper aims to deduce lessons for future policy. The analysis, based on two visitor surveys, suggests that the likelihood of success is improved when schemes are integrated, containing both ‘carrot’ and ‘stick’ elements. Since public perceptions are also found to be pivotal to its success, appropriate marketing of a scheme is vital. The paper concludes, however, that to achieve the fundamental objective of greater accessibility with less mobility, a more wide-ranging marketing effort is required intended to engender a sea change in attitude towards both the car and public transport.     

分布式通信流分析系统的实现

文章介绍了通信流分析以及匿名通信的研究现状,并分析了现在研究通信流分析所采用的几种流分析工具,指出他们对于匿名通信的通信流分析的不足之处,最后,提出了适应于匿名通信的分布式通信流分析系统的实现方法。     

CCM在公路工程项目进度管理中的实证分析

本文论述了CCM技术以及项目进度延迟的原因。并采用基于TOC的CCM技术,对公路工程 项目进度管理进行了实证分析。通过分析结果与传统方法的比较,论证CCM技术在公路工程项目进度管 理中的实用价值。     

基于模糊熵和多目标规划的公路货运交通枢纽布局模型

针对货运交通枢纽布局问题,首先利用模糊熵获得指标的权重,集结指标值后得到备选交通枢纽的综合评价值,建立一个多目标规划模型来最小化交通成本,最大化建设枢纽的综合评价值,求解后确定货运枢纽的位置、数量、容量等级。     

高速公路建设生态环境影响评价指标体系研究

随着高速公路建设如火如荼的进行,总里程的不断增加,它对生态环境的影响与破坏愈来愈严重,所以有必要进行高速公路生态环境影响评价研究。文章通过对高速公路建设项目生态环境影响评价指标筛选原则、指标初选、指标体系确立的具体分析与研究,完成了高速公路建设项目生态环境影响评价指标体系的研究。     

高速公路交通量的产生机理及其对运输通道结构的影响分析

定性地探讨高速公路对潜在交通量的吸引力，并对其扰动效应进行概述；运用SUE（Stochastic User Equilibrium,随机用户平衡）的思想，建立运输通道分担模型，详尽地阐述高速公路对其他运输方式的影响机理。     

私家车发展状况的国际比较与借鉴

文章通过对国内外私家车发展状况的比较,得到了一些有益的启示,建议我国私家车的发展问题应该考虑到我国的综合交通运输能力,积极发展多样化的交通方式,逐步建立多层次、高效、完善、有序的交通服务系统。     

山区公路交通流特性分析与评价

首先由观测数据确定代表车型的运行速度,采用实际路段调查得到的运行速度作为评价指标,分析山区公路的交通流运行状况,然后通过实地调查采集山区公路典型断面的交通流数据,统计交通量、交通组成以及不同车型运行速度的分布情况,并通过分析交通组成以及车速连贯性和离散性等直接影响道路交通安全的因素,对事故多发路段的交通流运行状态特征进行分析和评价。最后,选取京昆高速公路某典型路段,对该路段的交通流特性进行分析与评价,可为相关工作人员提供借鉴和帮助。     

基于计算机仿真的堆石坝坝面流水施工方案研究

根据流水施工的基本原理和堆石坝填筑的施工特点，利用计算机仿真技术对堆石坝施工交通运输系统进行模拟，考虑了堆石坝土石方挖运对其坝面流水施工的影响，合理确定出坝面流水施工方案，使其既能够满足施工进度所要求的填筑强度，又能够保证各分区可以进行流水施工。