Abstract

In this work, a model of an automated traffic light controller (ATLC –2007DNM) had been designed and implemented, using electronic instrumentation and experimental techniques in electronic engineering and physics, to manage the traffics at the busy four- ways junctions along Sahuda road in Mubi North,Adamawa State, Nigeria. The designed was achieved with the help of low power transformer rating of 3.6 watts, 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 (ATLC – 2007DNM) to allowed 17.50s, 14.00s, 10.50 and 7.00s 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.

Key word: Traffic light, four-way junction, traffic jam.