This 30" x 30" MUTCD compliant Reflective Stop Sign is solar powered, weather proof, and UV protective. It is made by LED Lighting Solutions and is designed for outdoor use in the USA. Our Solar Traffic and Safety series features a LED Flashing Stop Sign made to MUTCD (R1-1) specifications. Composed of Bright LED lights, Reflective 3M material, Aluminum alloy board and a Solar board, this sign can be seen from over 2500ft away. Join hundreds of cities, municipalities, companies, and industries using this sign to actively warn drivers and reduce accidents in their area. Make sure drivers come to a complete stop - get your Solar Flashing Stop Sign today!