Resumen
System and signaling device based on electrochromic materials for vehicles, preferably trains. The device comprises a series of elements of electrochromic material, which through a small electric current are excited and change color. By means of said color changes signals can be transmitted to a vehicle in its path near such devices. Reciprocally, a vehicle with an electrochromic device installed on board can also transmit signals to be read and processed to act in accordance with them. It is useful in railway applications since it allows a direct communication between train, central and other trains or even with the platform. It can be used for automation in the case of trains without driver. It is safe and allows, in case of anomalies in the operation, to warn of the problem of a fast form. It is also energy efficient. (Machine-translation by Google Translate, not legally binding)