探索自动驾驶汽车接管和事故严重程度之间的内基性:结构方程建模和通用线性逻辑模型的比较分析
Yiyong Pan1, Saisai Yang1, Congwei Wang1
1College of Automotive and Transportation Engineering, Nanjing Forestry University, Nanjing, China.
Traffic injury prevention
|August 15, 2025
概括
自动驾驶汽车的撞车受到手动接管事件的影响. 雨天,日光和道路状况对接管频率和撞车严重程度都有重大影响,突出显示需要改进驾驶员监控系统.
科学领域:
- 道路交通安全 道路交通安全
- 自主驾驶系统 自主驾驶系统
- 事故分析 事故分析
背景情况:
- 了解影响自动驾驶汽车撞车严重性的因素对于提高道路安全至关重要.
- 自动驾驶系统越来越普遍,需要对其安全性能进行研究.
研究的目的:
- 探索手动接管事件与自动驾驶汽车事故严重程度之间的内生关系.
- 确定影响手动接管的关键因素及其对碰撞严重性的影响.
主要方法:
- 利用了具有自动驾驶系统的车辆的多来源事故数据集.
- 开发了一个结构方程模型来分析碰撞严重性的影响,以及用于手动接管因素的通用线性逻辑模型.
- 进行了路径分析,以检查碰撞严重程度和手动接管之间的内在联系.
主要成果:
- 阴云/雨天,左后接触区域和日光显著影响手动接管和碰撞严重程度.
- 潮湿的路面,雨天和白天的光线对接管有显著的影响.
- 接管事件和道路类型 (非高速公路,十字路口) 显著影响了事故严重程度,证明了内因性.
结论:
- 手动接管事件在雨天和夜间的频率增加.
- 建议对恶劣的天气/照明条件进行实时监测,以提供早期警告.
- 实施这些模块可以减少接管事件,提高自动驾驶汽车的安全性和可靠性.
相关概念视频
Hypothesis Test for Test of Independence
3.7K
The test of independence is a chi-square-based test used to determine whether two variables or factors are independent or dependent. This hypothesis test is used to examine the independence of the variables. One can construct two qualitative survey questions or experiments based on the variables in a contingency table. The goal is to see if the two variables are unrelated (independent) or related (dependent). The null and alternative hypotheses for this test are:
H0: The two variables (factors)...
H0: The two variables (factors)...
3.7K
Mechanistic Models: Compartment Models in Individual and Population Analysis
86
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
86
Assumptions of Survival Analysis
197
Survival models analyze the time until one or more events occur, such as death in biological organisms or failure in mechanical systems. These models are widely used across fields like medicine, biology, engineering, and public health to study time-to-event phenomena. To ensure accurate results, survival analysis relies on key assumptions and careful study design.
197
Parameters Affecting Nonlinear Elimination: Zero-Order Input, First-Order Absorption and Two-Compartment Model
126
Drugs administered through various routes can lead to nonlinear elimination, resulting in complex pharmacokinetic behaviors crucial to understanding efficacious drug dosing.
When a drug is administered through a constant intravenous infusion and eliminated via nonlinear pharmacokinetics, it follows zero-order input. For example, oral drugs undergo first-order absorption upon administration and are eliminated through nonlinear pharmacokinetics.
In the case of subcutaneously administered drugs,...
When a drug is administered through a constant intravenous infusion and eliminated via nonlinear pharmacokinetics, it follows zero-order input. For example, oral drugs undergo first-order absorption upon administration and are eliminated through nonlinear pharmacokinetics.
In the case of subcutaneously administered drugs,...
126
Introduction to Test of Independence
2.4K
In statistics, the term independence means that one can directly obtain the probability of any event involving both variables by multiplying their individual probabilities. Tests of independence are chi-square tests involving the use of a contingency table of observed (data) values.
The test statistic for a test of independence is similar to that of a goodness-of-fit test:
The test statistic for a test of independence is similar to that of a goodness-of-fit test:
2.4K
Determination of Expected Frequency
2.3K
Suppose one wants to test independence between the two variables of a contingency table. The values in the table constitute the observed frequencies of the dataset. But how does one determine the expected frequency of the dataset? One of the important assumptions is that the two variables are independent, which means the variables do not influence each other. For independent variables, the statistical probability of any event involving both variables is calculated by multiplying the individual...
2.3K


