US 301 Concrete Test Road (Surface Texture Study)

Built parallel to an existing roadway, the test road allows traffic to be safely diverted when detailed performance checks are needed—without disrupting drivers. It’s the only full-scale concrete pavement test facility of its kind in the Southeastern United States. Florida’s warm and humid climate makes this site especially valuable for understanding how pavements perform in conditions very different from northern facilities like MnROAD in Minnesota. Combined with FDOT’s respected Accelerated Pavement Testing (APT) program, this test road positions Florida as a global leader in pavement innovation and research. Three different surface textures were applied to the passing lane to study how each affects pavement friction and tire noise. These textures include Longitudinal Diamond Grinding (LDG), a Bridge Deck texture that combines longitudinal diamond grinding with transverse grooving, and the Next Generation Concrete Surface (NGCS) — a new type of longitudinal diamond grinding technique. The travel lane features only the LDG texture.本试验道路平行于既有道路修建，可在需要开展精细化性能检测时安全分流交通，且不会对驾乘人员造成通行干扰。它是美国东南部地区同类型中唯一的全尺寸混凝土路面试验设施。佛罗里达州温暖湿润的气候使得该试验场极具研究价值，可用于探究路面在与明尼苏达州MnROAD等北部试验设施截然不同的环境中的服役表现。配合佛罗里达州交通局（Florida Department of Transportation, FDOT）享有盛誉的加速路面试验（Accelerated Pavement Testing, APT）项目，该试验道路使佛罗里达州成为路面创新与研究领域的全球领军者。研究团队在超车车道施作了三种不同的路面纹理，以探究各自对路面摩擦性能与轮胎噪声的影响。这三种纹理分别为：纵向金刚石磨削（Longitudinal Diamond Grinding, LDG）、一种结合纵向金刚石磨削与横向刻槽的桥面专用纹理，以及新一代混凝土路面（Next Generation Concrete Surface, NGCS）——一种新型纵向金刚石磨削工艺。行车道仅施作了纵向金刚石磨削纹理。