Durable and economical, engineer grade reflective stop signs are commonly used in parking lots. You may also opt for our hi-intensity reflective stop signs that promise superior reflectivity, particularly when approached from an angle. These are prismatic, come with a 10-year outdoor life warranty, and make the most common traffic sign material.  We offer diamond grade reflective stop signs as well, the highest reflectivity grade with 12+ years of life. Most suitable for visually cluttered environments such as urbanscapes. Please refer to this resource for more information on different reflectivity grades and their usage.