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在美国加利福尼亚州的网状高速公路上,大量使用着一种新形式的反光标志牌(见下图)。其特点是把一种含棱镜结构(Cube Corner)的圆形反射器(称之Retro-reflector)粘贴在标志牌的油漆底板上,组成白色的边框及文字线条。这种棱镜结构具有优异的回归反光性能,经测试,在观察角为0.2°,入射角为-4°的条件下,其逆反射系数可达2000,是一般高亮级反光膜的6～7倍。这种道路标志牌无论在白天或黑夜都有良好的可视性。夜间在汽车前灯照射下,几百米以外,司机能清晰见到标志轮廓及其指示的信息。
On the Mesa Freeways in California, USA, a new form of reflective signage is heavily used (see below). Its feature is a circular reflector with a Cube Corner (called Retro-reflector) affixed to the sign of the paint floor, composed of white borders and text lines. The prism structure has excellent retroreflective performance. It has been tested that the retroreflectance coefficient can reach 2000 under the condition of an observation angle of 0.2 ° and an incident angle of -4 °, and is 6 to 7 Times This kind of road signs have good visibility both day and night. Night under the car headlights, a few hundred meters away, the driver can clearly see the outline of the logo and its instructions.