CONSTRUCTION OF A MICROCONTROLLER BASED T-JUNCTION TRAFFIC LIGHT CONTROLLER

ABSTRACT

Tjunction traffic light controller is such a device that will play a significant role in controlling traffic at junctions, to ease the expected increased rush at such junctions and reduce to minimum disorderliness that may arise, as well as allowing the pedestrians a right of the way at intervals rather than being struck down when in a hurry to cross the roads. Such an electrical system with a touch of electronics that control the flow of traffic in a predetermined sequential pattern at a junction, has its diagram comprising of different components. The power supply unit provides the control unit with specified voltage from primary source. The pulse generator consisting of a timer generates pulse for the system. The clock or counter moderates the signal that enters the decoding logic system. The display unit of each stand consists of led, the first is red in colour, the second is amber in colour and the last is green in colour.

CHAPTER ONE

INTRODUCTION

1.1 BACKGROUND OF THE STUDY

The traffic on our roads, especially intracity traffic due to increasing number of cars grow by the day and unless adequate steps are taken to control the situation, we shall soon meet with circumstances we do not bargain for. That the innumerable traffic junctions in the country by far outnumber the staff strength of the traffic wardens available and that the traffic wardens even where they are enough to control all the junctions cannot do so throughout the day is not in doubt. Traffic control at T.junctions or elsewhere ensures orderliness of movements of vehicles, goods and pedestrians while its absence strongly indicates chaos and most at times leads to accidents.

In the light of the above, it is imperative to recognize the need to compliment the physical exhausting efforts of the traffic wardens. In doing so, steps to be taken should assume permanence in nature rather than any adhoc exercise. Such is the role expected to be played by an installed operational road junction traffic controller.

This project DESIGN AND CONSTRUCTION OF A THREE WAY JUNCTION TRAFFIC LIGHT CONTROLLER is such a device that will play significant role in controlling traffic at junctions to ease the expected increased rush at such junctions and reduce to minimum such disorderliness that may arise as well as allowing the pedestrians a right of the way at intervals rather than being struck down when in a hurry to cross the roads.

1.2 OBJECTIVE OF THE PROJECT

The main objective of the study includes:

1 To investigate the practicality of the theoretical knowledge about these components to be used.

2 To experiment on the compatibility of the working relation between components to be used.

3 To investigate the extent to which the design and construction of the control unit can be useful to mankind.

4 To investigate the immediate usefulness of the control system as complimentary to traffic wardens.

1.3 SCOPE OF THE STUDY

The scope of this project is to enlighten all electronics students on the use of microcontroller base traffic light 3ways and timer system in Tjunction. On the practical usage it is limited to the laboratory used for reference purpose. The larger application of this project work is found in most of our mega cities like Abuja, Lagos, Calabar, Enugu etc, to control and manage heavy traffic congestion.

1.4 PROJECT REPORT ORGANIZATION

This report is structured to follow the history and origin of traffic light system all through the design and implementation phase. The report takes into account the stepbystep process followed in order to arrive at the final design.