NovaTraffic traffic signs with changeable messages are intelligent executive elements in traffic control system which exist on all modern roads. They give vital information about security measures to drivers. A traffic sign can give more information with different symbols and messages, with huge light and good contrast, thanks to Led technology. These signs can last for at least 10 years , and their maintenance is very simple, since the inner side of the device is easy to be reached and the module can be easily changed.