The project concerns the supply and installation of the necessary equipment for sound devices and the necessary additional light signalling equipment in the city of Serres, in order to facilitate the mobility of visually impaired persons at 14 road crossings or simple pedestrian crossings of the city, where traffic is regulated by traffic lights. Through the upgrading of the light-signalling system with the addition of sound devices, the Municipality of Serres, on the one hand, contributes to the improvement of the living conditions of the residents and visitors of the city in terms of accessibility and mobility and, on the other hand, it utilises the possibilities offered by modern technology, adopting actions and interventions towards better and safer service for people with problems of vision.