U.S. Barricades Solar LED RAILROAD CROSSING Sign (W10-1) 30x30" are made with 3M High Intensity HIP Sheeting are MUTCD compliant and come with a two year warranty. All solar powered traffic signs feature an array of incredibly bright LED's that flash in unison, once per second, commanding the attention of drivers in any weather conditions day or night. We offer the brightest solar powered LED traffic sign in the industry at the lowest price in the United States! Any MUTCD sign can be transformed into a solar powered traffic sign that meet all specifications. All Solar LED Traffic sign are made in the United States.