调查建筑环境和交通流量对城市道路网络事故频率的影响
Dong Xiao1, Hongliang Ding2, N N Sze3
1Department of Civil Engineering, Institute of Transport Studies, Monash University, Melbourne, VIC, Australia.
Accident; analysis and prevention
|April 7, 2024
概括
本研究介绍了基于交通密度的区域 (TDZs),以更好地模拟事故发生情况. 技术开发区有助于人们更好地了解建筑环境和交通流量如何影响道路安全.
科学领域:
- 运输工程 运输工程
- 城市规划 城市规划
- 交通安全分析 交通安全分析
背景情况:
- 现有的事故发生研究缺乏对建筑环境和交通流动相互作用的细微了解.
- 传统的空间单位可能无法准确地捕捉影响碰撞的因素.
- 动态流量变量在碰撞频率建模中经常被忽视.
研究的目的:
- 通过使用基于交通密度的新型区域 (TDZs) 调查建筑环境属性和动态交通流对撞车频率的影响.
- 通过结合交通流动动态和空间细分来开发更精细的撞车预测模型.
- 确定与事故发生相关的关键建筑环境和交通流动因素.
主要方法:
- 利用来自澳大利亚墨尔本大区的综合数据集.
- 基于交通密度的区域 (TDZs) 用于空间细分.
- 应用了一个随机参数负双项回归模型,结合了宏观基本图 (例如,冲击波速度,拥堵指数) 的变量.
主要成果:
- 根据TDZ进行数据细分显著改善了与传统区域相比的机模型精细化.
- 诸如就业密度,道路网络设计,土地使用多样性和交通便利性等关键因素与事故发生频率有关.
- 确定了冲击波速度和拥堵指数对碰撞的未观察到的异质效应.
结论:
- 与传统方法相比,基于交通密度的区域为撞车建模提供了优越的框架.
- 纳入动态流量变量对于准确预测跨不同空间单位的碰撞频率至关重要.
- 结果支持增强实时交通管理,城市设计和道路安全战略.
相关概念视频
01:17Design Example: Alignment of a Road Line Using GIS
48
The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
48
01:20Microcracking in Concrete
117
Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
117
01:15Study Design in Statistics
8.0K
A study design is a set of techniques that allow a researcher to collect and analyze data from different variables defined for a specific research problem. Statistics is commonly for effective study design and more robust experiments,
Does aspirin reduce the risk of heart attacks? Is one brand of fertilizer more effective at growing roses than another? Is fatigue as dangerous to a driver as the influence of alcohol? Questions like these are answered using randomized experiments with proper...
Does aspirin reduce the risk of heart attacks? Is one brand of fertilizer more effective at growing roses than another? Is fatigue as dangerous to a driver as the influence of alcohol? Questions like these are answered using randomized experiments with proper...
8.0K
01:41Social Traps
22.3K
Social traps are negative situations where people get caught in a direction or relationship that later proves to be unpleasant, with no easy way to back out of or avoid. The concept was orignally introduced by John Platt who applied psychology to Garrett Hardin's "Tragedy of the Commons", where in New England herd owners could let their cattle graze in the common ground. This situation seems like a good idea, but an individual could have an advantage. If they owned...
22.3K
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
46
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
46
01:40Archival Research
16.0K
Some researchers gain access to large amounts of data without interacting with a single research participant. Instead, they use existing records to answer various research questions. This type of research approach is known as archival research. Archival research relies on looking at past records or data sets to look for interesting patterns or relationships. For example, a researcher might access the academic records of all individuals who enrolled in college within the past ten years and...
16.0K