预期缓冲时间 - - 一个逃避性的替代安全指标,用于在异质的交通和激进的驾驶条件下评估未经标志的交叉路口的风险
Manish Dutta1, Suprava Jena2, Bansil Korat1
1Department of Civil Engineering, Nirma University, Ahmedabad, India.
Accident; analysis and prevention
|October 3, 2024
概括
一个新的风险评估工具,UnSigRisk评分,准确地测量了在没有信号的十字路口避开驾驶. 这一基于预期缓冲时间 (ABT) 的得分,为改善交通安全提供了实际解决方案.
科学领域:
- 交通工程是交通工程.
- 道路交通安全 道路交通安全
- 运输科学 运输科学
背景情况:
- 没有信号的交叉路口存在复杂的风险评估挑战,原因是诸如繁忙的交通,多样化的车辆和激进的驾驶等因素.
- 现有的安全指标很难捕捉在这些苛刻的环境中驾驶员行为的细微差别.
研究的目的:
- 引入一个新的代用安全指标,预期缓冲时间 (ABT),以及在未标记的十字路口进行风险评估的衍生指标.
- 开发和验证一个全面的风险评估措施,UnSigRisk评分,能够量化逃避驾驶行为.
主要方法:
- 预期缓冲时间 (ABT) 和三个相关指标的发展:ABT负比率,ABT极端比率和ABT进展比率.
- 使用这些ABT衍生指标制定UnSigRisk评分.
- 经验验证使用来自印度艾哈迈达巴德三个具有挑战性的无信号交叉点的数据,采用斯皮尔曼等级相关系数.
主要成果:
- UnSigRisk评分有效量化了逃避驾驶行为,相关系数超过0.6.6.
- 拟议的得分显著优于现有的指标,如Yaw Rate Ratio和Jerk在测量逃避行动方面.
- 这项研究证明了基于ABT的指标在各种驾驶行为和交通条件中的稳定性.
结论:
- "UnSigRisk评分"为交通当局提供了一种实用和有效的工具,以识别高风险的未有信号的十字路口.
- 有针对性的安全干预措施可以根据UnSigRisk评分提供的见解更有效地分配.
- 预期缓冲时间 (ABT) 框架提供了一种全面的方法来理解和提高未经标志的十字路口的安全性.
相关概念视频
The Anchoring-and-Adjustment Heuristic
In order to make good decisions, we use our knowledge and our reasoning. Often, this knowledge and reasoning is sound and solid. However, sometimes, we are swayed by biases or by others manipulating a situation. For example, let’s say you and three friends wanted to rent a house and had a combined target budget of $1,600. The realtor shows you only very run-down houses for $1,600 and then shows you a very nice house for $2,000. Might you ask each person to pay more in rent to get the $2,000...
Social Traps
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 more cows, the larger...
Buffer Effectiveness
Buffer solutions do not have an unlimited capacity to keep the pH relatively constant . Instead, the ability of a buffer solution to resist changes in pH relies on the presence of appreciable amounts of its conjugate weak acid-base pair. When enough strong acid or base is added to substantially lower the concentration of either member of the buffer pair, the buffering action within the solution is compromised.
The buffer capacity is the amount of acid or base that can be added to a given volume...
The buffer capacity is the amount of acid or base that can be added to a given volume...
Pharmacovigilance
Post-marketing surveillance is a critical component of pharmaceutical regulation, often uncovering unanticipated adverse drug reactions (ADRs) once a drug is widely used over an extended period.
This process, termed pharmacovigilance, aims to detect, evaluate, and minimize harmful effects related to medication use. The data collection for pharmacovigilance depends on spontaneous reporting systems, where healthcare professionals or patients voluntarily report suspected ADRs.
In some cases, there...
This process, termed pharmacovigilance, aims to detect, evaluate, and minimize harmful effects related to medication use. The data collection for pharmacovigilance depends on spontaneous reporting systems, where healthcare professionals or patients voluntarily report suspected ADRs.
In some cases, there...
Assumptions of Survival Analysis
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.
Sight Distance in a Vertical Curve
Sight distance on vertical curves is critical in roadway design. It ensures drivers can see far enough ahead to identify and respond to hazards effectively. This directly impacts safety, driver comfort, and the overall efficiency of the transportation network.Vertical curves are classified into crest and sag curves based on their geometry. For crest curves, sight distance is determined by the line of sight between a driver's eye and a small object on the road's surface. Design parameters for...


