developed highly visible energy efficient Mobile Variable Message Signs. These maintenance friendly Variable Message Signs are equipped with an energy saving LED system which uses an advanced optic technique that produces graphically brilliant text / images at a high contrast ratio confirm NEN-EN-12966. Through optimizing output per LED the same optic results can be reached with a smaller number of LEDS. This is great news as far as the price of the vehicle is concerned but it also cuts in energy use and maintenance. It enables us to reduce the current to the LED's which leads to a longer life. The lower the current the longer the LED's lasts.