Ribbed Tire Friction Number (Travel Lane)

<p style='text-align:justify;'>The <strong>US 301 Asphalt Test Road</strong> provides a unique opportunity to evaluate the <strong>real-world performance</strong> of new asphalt pavement technologies and innovative design concepts. It examines how <strong>various factors—such as traffic loads, pavement design, material properties, construction methods, and environmental conditions—interact and affect long-term performance</strong>. Built parallel to an existing highway and a concrete test road, the facility allows traffic to be safely diverted when needed, enabling continuous performance monitoring without disrupting regular travel.</p><p style='text-align:justify;'>This facility comprises <strong>12 main sections</strong>, with Sections 8 and 10 further divided into two smaller sub-sections. Each section is <strong>1,000 feet long</strong> and <strong>includes both a travel lane and a passing lane</strong>.</p><p style='text-align:justify;'>Sections 1 through 7 are focused on the base layer study, featuring a standard Florida top layer structure with varying base configurations. <span>Section 8 is dedicated to studying reflective cracking and is divided into two 500-foot sub-sections: 8A with crack relief mix and 8B as control. </span>Section 9 features the Superpave 5 study, while Section<span> 10 focuses on a deep-lift pavement design involving two different mix designs and is also split into two 500-foot sub-sections.</span> <span>Sections 11 and 12 are part of the open-graded friction course study, with Section 11 as a common Florida OGFC section and Section 12 as the newly developed quiet friction course test section.</span></p><p style='text-align:justify;'>Construction work on the test road began in <strong>2023</strong> and continued for about eight months. After completing all paving and safety work, the road was officially <strong>opened to public traffic in August 2024</strong>. The facility now serves as a real-world testing ground where pavement materials and designs can be evaluated under <strong>Florida’s unique traffic loads and weather conditions</strong>.</p>美国301号沥青试验路（US 301 Asphalt Test Road）为评估新型沥青路面技术与创新设计理念的实路性能提供了独特契机。该设施可研究交通荷载、路面设计、材料特性、施工方法以及环境条件等多种因素如何相互作用并影响路面长期性能。该试验路建于既有高速公路与混凝土试验路旁侧，可在需要时安全分流交通，从而在不干扰正常通行的前提下实现持续的路面性能监测。 该试验路共包含12个主路段，其中第8段与第10段进一步划分为两个小型子路段。每个主路段长度为1000英尺，同时设有行车道与超车道。 第1至7段聚焦路面基层研究，采用佛罗里达州标准路面面层结构，仅基层配置存在差异。第8段专门用于反射裂缝研究，被划分为两个500英尺的子路段：8A段采用抗裂混合料，8B段作为对照组。第9段为Superpave 5研究路段，第10段聚焦深铺层路面设计，采用两种不同的混合料设计，同样被划分为两个500英尺的子路段。第11与12段属于开级配抗滑磨耗层（open-graded friction course, OGFC）研究范畴，其中第11段为常规佛罗里达州OGFC路段，第12段为新研发的静音抗滑磨耗层试验路段。 该试验路的施工于2023年启动，历时约8个月。完成所有摊铺与安全设施施工后，该路段于2024年8月正式对公众开放通行。目前，该设施可作为实路试验平台，在佛罗里达州独特的交通荷载与气象条件下开展路面材料与设计方案的评估工作。