A Signal System is a method used to convey information through various signals, which can be visual, auditory, or electronic. These systems are essential in communication, transportation, and control processes. For example, traffic lights are a simple signal system that directs vehicle and pedestrian movement using colored lights. In more complex applications, such as telecommunications, a signal system can involve the transmission of data over long distances using electromagnetic waves. This includes technologies like radio, television, and internet, where signals are encoded, transmitted, and decoded to ensure accurate communication between devices and users.