Division of Pharmacology, Utrecht University, Utrecht, The Netherlands.
Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, The Netherlands.
J Sleep Res. 2018 Jun;27(3):e12622. doi: 10.1111/jsr.12622. Epub 2017 Oct 24.
The primary outcome measure of the on-road driving test is the Standard Deviation of Lateral Position. However, other outcome measures, such as lapses and excursions out-of-lane, also need to be considered as they may be related to crash risk. The aim of this study was to determine the direction of lapses and excursions out-of-lane (i.e. towards/into the adjacent traffic lane or towards/into the road shoulder). In total, data from 240 driving tests were re-analysed, and 628 lapses and 401 excursions out-of-lane were identified. The analyses revealed that lapses were made equally frequently over left (49.4%) and over right (43.3%). In contrast, excursions out-of-lane were almost exclusively directed over right into the (safer) road shoulder (97.3%). These findings suggest that drivers are unaware of having lapses, whereas excursions out-of-lane are events where the driver is aware of loss of vehicle control.
道路行驶测试的主要评估指标是横向位置标准差。但是，其他评估指标（如偏离车道和驶出车道）也需要考虑，因为它们可能与碰撞风险有关。本研究旨在确定偏离车道和驶出车道的方向（即朝向/进入相邻车道或朝向/进入路肩）。总共对 240 次驾驶测试的数据进行了重新分析，并确定了 628 次偏离车道和 401 次驶出车道。分析结果表明，偏离车道的情况在左侧（49.4%）和右侧（43.3%）发生的频率相同。相比之下，驶出车道几乎全部是向右进入（更安全的）路肩（97.3%）。这些发现表明，驾驶员没有意识到自己有偏离车道的情况，而驶出车道则是驾驶员意识到车辆失控的事件。
