Both reflective and solar panel signs offer good nighttime visibility. However, there are many differences in the construction, technology, and working of both the sign types. Reflective Address Signs use a 3M-brand reflective film mounted on thick non-rusting aluminum. The reflective film on top makes it easier to spot the sign in the dark and enhances visibility by reflecting ambient and direct light (such as headlights) that hits the sign’s surface. Reflective signs are printed with 3M screen printing or 3M outdoor digital inks designed specifically for outdoor street, traffic, and parking signs. Solar Panel Address Signs , on the other hand, use direct sunlight to provide 70 hours of light. The sign comes with a battery and can be adjusted to 360º for the perfect street view. Easily adjust the direction and angle of the solar panel for optimum sun exposure. These signs include 52 individual 2.38" / 6cm stick-on numbers, and the sign accommodates addresses up to 5 numbers. Both the sign types offer good nighttime visibility.