• Gollapalli Jagadish
• J. Yogi Naga Sairam
• P. Venkata Siva Sairam
• R. AbhiramaSasidhar
• V. SaiNandanVarshith

Four Way Traffic Lights Circuit using 555 Timer IC. In this traffic light project we are going to design a circuit, to control traffic lights on a four-way signal. This circuit is designed by 555 Timer IC timer and a decade counter. The timer generates pulses and these pulses are fed to the ten stage decade.Traffic signal lights are very Important to regulate vehicles and traffic on roads, simple four way traffic light circuit is designed with timer IC 555 and counter IC CD4017. we know each traffic signal light setup will have three colors and representing Red for STOP, Yellow for WAIT, and Green for GO, those signals are works based on time intervals. Traffic light has proved to be an amazing way to stop the vehicular collisions and control the traffic jams in today’s modern era where everyone owns the different types of vehicles.

step down transformer , voltage regulator IC, bridge rectifier, A-stable , mono-stable , Bi-stable mode .

"FOUR WAY TRAFFIC SIGNAL CIRCUIT USING 555 TIMER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 4, page no.1587-1592, April-2020, Available :http://www.jetir.org/papers/JETIR2004415.pdf

"FOUR WAY TRAFFIC SIGNAL CIRCUIT USING 555 TIMER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 4, page no. pp1587-1592, April-2020, Available at : http://www.jetir.org/papers/JETIR2004415.pdf