S. Mounika A. Sandhya Lakshmi M. Bhavana K. Siva sai G.L.N. Suresh 03 4 All metropolitan cities face traffic congestion problems especially in the downtown areas Normal cities can be transformed into smart cities by exploiting the information and communication technologies ICT The paradigm ofInternet of Thing IOT can play an important role in realization of smart cities This proposes an IOT based traffic signal solutions for smart cities Now a days we are seeing and listening accidents near traffic signals due to over speed Because they dont know which signal light is currently there So to overcome this problem we want to design a mobile application In thatapplication it will show the colour of the signal and time limit of the signal with the help of this the driver can decrease the speed or increase the speed So we can reduce the accidents and we can consume the fuel This will display when a driver is 500mts away from the traffic signal However the scheme proposed is general and can be used in any Metropolitan city without the loss of generality Copyright (c) World Journal of Pharmaceutical Seiences. All rights reserved 2026