We've talked about the importance of house numbers that can be seen well from the street, even at night (if there's an emergency, you don't want the police or ambulence having any trouble finding your home). While these house numbers, which are made from recycled aluminum traffic signs, might not be as bright at night as these lighted house numbers, their reflective quality puts them a step above many address plaques. Plus it's cool having something made from recycled materials.
"Durable and weather-resistant, all numerals are made to order and available in one of three easily seen color combinations: yellow and black; orange and black; black and white."
From Eco-Artware