The use of express lanes (ELs) in freeway traffic management has seen increasing popularity throughout the United States, particularly in Florida. These lanes aim at making the most efficient transportation system management and operations tool to provide a more reliable trip. An important component of ELs is the channelizing devices used to delineate the separation between the ELs and the general-purpose lane. With the upcoming changes to the FHWA Manual on Uniform Traffic Control Devices, this study provided an opportunity to recommend changes affecting safety and efficiency on a nationwide level. It was important to understand the impacts on driver perception and performance in response to the color of the EL delineators. It was also valuable to understand the differences between demographics in responding to delineator colors under different driving conditions. The driving simulator was used to test the responses of several demographic groups to changes in marker color and driving conditions. Furthermore, participants were tested for several factors relevant to driving performance including visual and subjective responses to the changes in colors and driving conditions. Impacts on driver perception were observed via eye-tracking technology with changes to time of day, visibility, traffic density, roadway surface type, and, crucially, color of the delineating devices. The analyses concluded that white was the optimal and most significant color for notice of delineators across the majority of subjective and performance measures, followed by yellow, with black being the least desirable.

在高速公路交通管理中使用快速车道（EL）的情况在美国各地，尤其是在佛罗里达州越来越普遍。这些车道旨在成为最有效的运输系统管理和运营工具，以提供更可靠的出行。EL的重要组成部分是用于描述EL与通用通道之间距离的通道化设备。随着即将发布的《 FHWA统一交通控制设备手册》的变更，这项研究为在全国范围内建议影响安全性和效率的变更提供了机会。重要的是要了解响应EL轮廓线颜色对驾驶员感知和性能的影响。理解人口统计数据在不同驾驶条件下对轮廓线颜色的响应方面的差异也很有价值。驾驶模拟器用于测试几个人口统计群体对标记颜色和驾驶条件变化的响应。此外，还对参与者进行了与驾驶性能相关的几个因素的测试，包括对颜色和驾驶条件变化的视觉和主观反应。通过眼动追踪技术观察到了对驾驶员感知的影响，其中包括时间变化，能见度，交通密度，道路表面类型，以及至关重要的是，轮廓线的颜色。分析得出的结论是，在大多数主观和表现指标中，白色是最佳的和最显着的颜色，可用来描绘轮廓，然后是黄色，