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The sleep of commercial vehicle drivers under the 2003 hours-of-service regulations

机译：根据2003年服务时间条例，商用车驾驶员的睡眠时间

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Previous research has found that commercial drivers get an average of 5.18 h of sleep per night. The revised hours-of-service (HOS) regulations (in the United States) are in place to provide drivers with more opportunities to get sleep. However, are drivers really getting more sleep under these new regulations? Also, is there a relationship between sleep quantity and involvement in critical incident (crashes, near-crashes, or crash-relevant conflicts)? Data from 73 truck drivers, collected during a naturalistic driving study after the implementation of the 2003 HOS regulations, were analyzed to determine overall sleep quantity (using actigraphy), along with sleep quantity prior to being involved in a critical incident. Sixty-two drivers had at least seven consecutive days (Monday through Sunday) of reliable actigraphy data; mean sleep quantity per 24-h period (midnight centered using the Cole-Kripke algorithm) for these drivers was 6.28 h (S.D. = 1.42 h). Fifty-eight critical incidents were recorded in the 1 Oth and 1 lth driving hours. Analysis results indicated that drivers received significantly less sleep in the period prior to a critical incident as compared to their mean overall sleep quantity. The results of this study indicate drivers may be getting more sleep under the revised 2003 HOS regulations as compared to the old regulations. In addition, significantly less sleep in the 24-h period prior to involvement in a critical incident suggests driver fatigue may have been a potential contributing factor in these critical incidents.
机译：先前的研究发现，商业驾驶员每晚平均可睡5.18小时。修订后的服务时间（HOS）条例（在美国）已经到位，以为驾驶员提供更多入睡的机会。但是，在这些新规定下，驾驶员真的会睡得更多吗？另外，睡眠量与关键事件（崩溃，接近崩溃或与碰撞相关的冲突）之间是否存在关系？在执行2003年居屋条例之后，对来自73名卡车司机的数据进行了自然驾驶研究，对这些数据进行了分析，以确定总体睡眠量（使用书法）以及涉及重大事故之前的睡眠量。 62名驾驶员至少连续7天（星期一至星期日）有可靠的书法数据。这些驾驶员每24小时（午夜以Cole-Kripke算法为中心）的平均睡眠量为6.28小时（标准差= 1.42小时）。在1 Oth和1 lth驾驶小时内记录了58起严重事故。分析结果表明，与平均总睡眠量相比，危急事件发生前驾驶员的睡眠量明显减少。这项研究的结果表明，与旧的规定相比，根据2003年修订的HOS规定，驾驶员可能会获得更多的睡眠。此外，在发生关键事件之前的24小时内睡眠明显减少，这表明驾驶员疲劳可能是这些关键事件的潜在促成因素。

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