Pilot Study to Investigate and evaluate Factors impacting Highway Construction Workers' Hazard Recognition Performance

调查和评估影响公路施工人员危险识别绩效因素的试点研究

基本信息

项目摘要

Pilot Study to Investigate and Evaluate Factors impacting Highway Construction Workers' Hazard Recognition Performance Project Summary Highway work zones are dangerous environments where any mistake in recognizing hazards could lead to a fatal outcome for workers. Highway construction workers have a high risk of exposure to two of the fatal four hazards, i.e., struck-by and caught-in-between. In 2020, over 102,000 work zone crashes occurred resulting in over 45,000 injuries and 857 fatalities. Workplace safety perception includes site hazard identification and risk measurement to prevent occurrences of accidents/incidents. This research serves as one of the initial studies to take a wholistic approach towards factors that impact highway workers’ cognitive load and its effect on their hazard recognition performance. Highway workers’ hazard recognition performance will be measured by a variety of objective and subjective metrics. To this end, interactive virtual reality highway work zone scenarios will be designed in collaboration with a panel of industry professionals. Forty Highway workers and construction students will be recruited to participate in the VR experiment. VR head-mount display equipped with eye-tracking technology will be used to understand how workers examine their environments during hazard recognition activities, and whether such search patterns change in response to different intrinsic and extrinsic factors. Eye movements will be recorded as the workers navigate the simulated virtual construction site and recognize safety hazards. During the experiment, the workers will be assigned to different tasks, under different environmental states. The experiments will also be conducted during different times of the day to evaluate the added impact of fatigue on the hazard recognition. Each participant will start with one normal scenario, and will gradually experience change in factors. The cognitive workload, which is highly connected to workers’ attention resource allocation, will be measured according to participants’ gaze fixation, visual search track, and attention map. After each experiment, participants will be asked to fill out a NASA-TLX questionnaire to collect their perceived cognitive workload. Following the prescriptive data analysis by comparing participants’ eye movement metrics and subjective feedback, recommendations will be provided towards the design of intervention systems to improve highway worker safety. The recommendations will specifically include: (1) need for augmenting workers hazard detection capability; (2) technology interventions that can be effectively used to help workers in hazard recognition. The proposed work will broadly contribute to NORA Strategic Goals in Construction sector (NORA agenda for construction sector- Objective 3: Struck-by)
公路施工工人影响因素调查与评价的初步研究 危险识别性能 项目摘要 公路作业区是危险的环境,任何对危险的认识错误都可能导致 对工人来说是致命的结果。公路建设工人接触以下两种污染物的风险很高 致命的四种危险,即被撞和夹在中间。2020年,超过10.2万起工作区事故 事件造成45000多人受伤,857人死亡。工作场所安全感知包括现场 危险识别和风险测量,以防止事故/事件的发生。这项研究 是对影响公路的因素采取整体方法的初步研究之一。 工人的认知负荷及其对危险识别绩效的影响。公路工人的危险 识别性能将通过各种客观和主观指标来衡量。为此, 交互式虚拟现实高速公路工作区场景将与以下小组合作设计 行业专业人士。将招募40名公路工人和建筑专业的学生参加 在虚拟现实实验中。配备眼球跟踪技术的VR头盔显示器将用于 了解工人在危险识别活动中如何检查他们的环境,以及 这样的搜索模式会随着不同的内在和外在因素而变化。眼球运动会 当工人在模拟的虚拟建筑工地导航并识别安全隐患时,将被记录下来。 在实验期间,工人将被分配到不同的任务,在不同的环境下 各州。实验还将在一天中的不同时间进行,以评估添加的 疲劳对危险识别的影响。每个参与者都将从一个正常场景开始,并将 逐渐体验到因素的变化。认知工作量,这与员工的 注意力资源分配,将根据参与者的凝视注视、视觉搜索 跟踪,和注意地图。每次实验后,参与者将被要求填写NASA-TLX 问卷调查,收集他们感知的认知工作量。在遵循规范数据分析之后, 比较参与者的眼动指标和主观反馈,建议如下 为设计干预系统以提高公路工人的安全提供了依据。这个 具体建议将包括:(1)需要增强工人的危险检测能力; (2)可有效用于帮助工人识别危险的技术干预措施。这个 拟议的工作将广泛有助于实现建筑部门的Nora战略目标(Nora议程 对于建筑业-目标3:被取消)

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