In this work, a model of an automated traffic light controller (ADS - 3G) had been designed, simulated, tested and implemented, using experimental techniques in electronic engineering, to manage the traffics at the busy four way junctions along Sahuda road in Mubi North Adamawa State, Nigeria. The designed was achieved with the help of 12V automated solar energy power supply, time base (555 timer), decade counter, D-flip-flop, timing sequence selector for red, green, amber and yellow light and relay circuit for switching the appropriate light. The average volume of vehicular traffics observed for the period of one week (4/4/07 - 11/4/07) for Masalachi, Stadium, Sahuda and Sarki roads are 2368, 1996, 1982 and 138, respectively which prompted the development of the model (ADS - 3G) to allowed 17.50, 14.00, 10.50 and 7.00 s accordingly. This model is capable of eliminating the inefficiency and likely error associated with human traffic controller by minimizing accident and unnecessary traffic jams at the junction.
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