2017 Fiscal Year Final Research Report
Reasonable Evaluation Method of Road Surface Unevenness Considering Physiopsychological Time-dependency
| Project/Area Number |
15K20843
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Civil engineering materials/Construction/Construction management
Biomedical engineering/Biomaterial science and engineering
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| Research Institution | Kitami Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 路面評価 / 生体疲労 / 精神的負荷 / 認知反応時間 / 生理心理計測 / ドライビングシミュレータ |
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| Outline of Final Research Achievements |
This study examines the influence of road surface unevenness on the mental fatigue expressed by physiopsychological responses of humans by use of a sophisticated driving simulator. This study employs the following two physiopsychological measures: one is perceptional reaction time that refers to attentional resources for evaluating cognitive performance of humans, and heart rate variability indices that indicate mental stress corresponding to physiological changes in the autonomic nervous systems. As a result, both the long- and short- term mental stress increase when reaction time increases significantly proportional to the increase of surface roughness. This result indicates that surface roughness affects not only the ride comfort but also reduction of the safety by increasing reaction time with increasing mental fatigue. This study also provides the acceptable limit of the IRI for highways, which supports existing research results regarding roughness evaluation.
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| Free Research Field |
交通工学
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