JME_V5_N2_A1 N. Keerthi Venkata Ajay Kumar G. N. Deepthi Journal on Mechanical Engineering 2249 - 0744 5 2 1 5 Automatic Light Controller, Traffic Management, dimmer system, Solar powered, Light Dependent Resistor (LDR) In this paper, the authors have proposed a low cost solar powered automatic head light controller depending upon the traffic density on the roads. General automobiles have been provided with dual purpose headlights in the dark conditions where the scene is not visible. The low beam light and high beam light are used for different conditions or parameters which affect travelling on road. A 3D Mechanical Design has been done to check the feasibility of the solar panel, controller to accommodate on the stand, then fabricated the exact design with mild steel bars as a support in the form of a stand to the controller. With the help of LDR sensor circuit and dim and brightness controller unit they have successfully tested the unit. Even ultrasonic sensors are also used to detect the objects and activate the controller. At last the equipment is one of the low cost solar powered automatic controller. February - April 2015 Copyright © 2015 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=3245