An adaptive stop sign including a stop sign plate and at least one light indicator. The stop sign plate is divided into a plurality of sections. The adaptive stop sign is connected to a traffic signal control system (TSCS). In an active mode, the adaptive stop sign works as a traffic control signal and the TSCS switches on the at least one light indicator according to a traffic control signal. In an inactive mode, the adaptive stop sign works as a normal sign and the TSCS switches off the at least one light indicator.