Illuminate safety with our Reflective Driveway Sign! With easy installation and of durability, your property will always be marked with authority. Why Choose Our Reflective Driveway Sign?. Unit Quantity: 2.0 Material: Aluminum,Rust Free Aluminum,Reflective Room: Indoor,Outdoor Features: Waterproof,UV Resistant,Weatherproof,Scratch Resistant,Fade Resistant.