Move-over laws are intended to enhance the safety of road agency and law enforcement personnel who are working on or near the roadway. This study examined driver behavior through a series of field studies where these types of vehicles were located on the outside shoulder of a freeway with their lights activated. The study also evaluated the use of upstream dynamic message signs (DMS) to discern whether targeted safety messages had any impact on behavior under this scenario. Upstream and downstream speed and lane position data were collected from vehicles originally traveling in the rightmost lane upstream of the DMS and emergency/service vehicle at two locations in Michigan. Logistic regression models were estimated to assess driver compliance with the law while considering important contextual factors, such as the type of vehicle on the shoulder and the message displayed on the DMS. The results indicated that drivers were more likely to move over or reduce their speeds when a police car was located on the shoulder as compared to a transportation agency pickup truck. In general, the type of message displayed had minimal impact on driver behavior. The one exception showed that drivers were likely to drive at or below the speed limit when targeted move-over messages were shown as compared to standard travel time messages. For all message types, both speed and lane compliance improved if the roadside vehicle was a police car.

转移法旨在提高在道路上或附近工作的道路管理机构和执法人员的安全。这项研究通过一系列实地研究来检查驾驶员的行为，其中这些类型的车辆位于高速公路的外侧路肩，并且它们的灯被激活。该研究还评估了上游动态消息标志 (DMS) 的使用，以辨别有针对性的安全消息是否对这种情况下的行为有任何影响。从最初在 DMS 上游最右侧车道行驶的车辆和密歇根州两个地点的紧急/服务车辆收集上游和下游速度和车道位置数据。估计逻辑回归模型以评估驾驶员遵守法律的情况，同时考虑重要的背景因素，例如路肩上的车辆类型和 DMS 上显示的消息。结果表明，与运输机构的皮卡车相比，当警车位于路肩时，司机更有可能越过或降低速度。通常，显示的消息类型对驾驶员行为的影响很小。一个例外表明，与标准行驶时间消息相比，当显示有针对性的移动消息时，司机可能会以限速或低于限速的速度行驶。对于所有消息类型，如果路边车辆是警车，速度和车道合规性都会得到改善。通常，显示的消息类型对驾驶员行为的影响很小。一个例外表明，与标准行驶时间消息相比，当显示有针对性的移动消息时，司机可能会以限速或低于限速的速度行驶。对于所有消息类型，如果路边车辆是警车，速度和车道合规性都会得到改善。通常，显示的消息类型对驾驶员行为的影响很小。一个例外表明，与标准行驶时间消息相比，当显示有针对性的移动消息时，司机可能会以限速或低于限速的速度行驶。对于所有消息类型，如果路边车辆是警车，速度和车道合规性都会得到改善。