During daily work, bus drivers are exposed to various environmental factors, and their mental responses to these risk factors are still poorly understood. This study aimed to investigate the cognitive performance of bus drivers with respect to noise and vibration exposure. The study was conducted in 103 healthy city bus drivers. Based on their work schedule, the drivers' exposure to noise and vibration was measured using the Svantek SV 104 noise dosimeter and the SV 106 vibration meter, respectively. The simple Stroop test was used to measure drivers' selective attention capacity and skills as cognitive performance indicators. Drivers' job stress was determined using a standard questionnaire. The drivers' exposure levels to noise, whole-body vibration, and hand-arm vibration was 79.50 ± 3.51 dB, 0.620 ± 0.159 m/s², and 0.438 ± 0.064 m/s², respectively. Significant differences were observed in the interference score (IS) and interference time (IT) after driving (p < 0.05), which indicates a decrease in the number of true responses and an increase in response time. The multiple linear regression model showed that noise and vibration, as main environmental stressors in the presence of other individual's covariates such as age, work experience, and job stress, have significant effects on cognitive performance based on changes in IS and IT during driving (model accuracy; r = 0.61 and r = 0.57). The traffic load was also significantly associated with changes in IS and IT (p < 0.05). The possibility of mental function loss while driving indicates that appropriate occupational health surveillance must be implemented for bus driving occupations.

在日常工作中，公交车司机暴露在各种环境因素中，他们对这些风险因素的心理反应仍知之甚少。本研究旨在调查公交车司机在噪声和振动暴露方面的认知表现。该研究在 103 名健康的城市公交车司机中进行。根据他们的工作计划，分别使用 Svantek SV 104 噪声剂量计和 SV 106 振动计测量驾驶员暴露于噪声和振动的情况。简单的 Stroop 测试用于测量驾驶员的选择性注意力能力和技能，作为认知性能指标。司机的工作压力是使用标准问卷确定的。驾驶员对噪音、全身振动和手臂振动的暴露水平为 79.50 ± 3.51 dB, 0.620 ± 0。, 和 0.438 ± 0.064 m/s ²，分别。驾驶后干扰评分 (IS) 和干扰时间 (IT) 存在显着差异 ( p  < 0.05)，这表明真实响应数量减少，响应时间增加。多元线性回归模型表明，噪声和振动作为主要环境压力源，在存在年龄、工作经验和工作压力等其他个体协变量的情况下，基于驾驶过程中 IS 和 IT 的变化对认知表现有显着影响（模型准确度；r  = 0.61 和r  = 0.57）。流量负载也与 IS 和 IT 的变化显着相关（p < 0.05)。驾驶时出现精神功能丧失的可能性表明，必须对公交车驾驶职业进行适当的职业健康监测。