This work has been aimed at efficient means of controlling the traffic effectively for twenty-four hours. As the world is growing technologically more and more vehicles jump into the public road adding to the already existing number. Consequently, more efficient way of controlling the traffics becomes more desirable as compared to the obsolete way of using the traffic personnel’s.

The design of this traffic light control is grouped basically into three; digital logic design, the power circuit and the power supply design. The digital logic design is based on integrated circuits which happens to be the modern way of designing digital systems, the power circuit design is aimed at lighting the different LEDS as and when due, while the power supply design strives to achieve a constant 8V dc supply for powering the circuit.

For this work, the frame with the LEDS mounted on it has been constructed, the driven circuit was implemented and the entire system enclosed in the smoothened frame.

The realized work was tested and guaranteed to give a firmly good level of performance.

TABLE OF CONTENTS

Title page

Approval page

Dedication

Acknowledgement

Table of contents

Abstract

CHAPTER ONE

1.0 Introduction

1.1 aims of the project

1.2 Methodology

CHAPTER TWO

2.0 A Review on the Traffic Light Control System

2.1 The Power supply unit

2.2 The transformer

2.3 The rectifier

2.4 The filter

2.5 The Voltage Regulator

2.6 The Digital Logic Circuit

2.7 The Oscillator

2.8 The Counter

2.9 The Decoder

2.10 The Logic Gates

2.11 The Power Circuit

2.12 The Booster/Amplifier Stage

2.13 The Lamp/LEDS

CHAPTER THREE

3.0 The Traffic Light Control

3.1 The Power Supply Design Specifications

3.2 The Transformers

3.3 Rectifier

3.4 The Filter Capacitor

3.5 The Voltage Regulator

3.6 The Digital Logic Design

3.7 The Oscillator

3.8 The 4017 Decade Counter

3.9 The output Logic Gate Circuit

CHAPTER FOUR

4.0 Problem Encountered

4.1 Construction and Testing

4.2 Cost Analysis

4.3 The overall Circuit Diagram of the $-way Traffic Light Control

CHAPTER FIVE

5.1 Conclusion

5.2 Recommendations

REFERENCES.

CHAPTER ONE

1.0 INTRODUCTION

In the ever fast-growing world of business and technology today, there has become an increasing column of vehicles on every road in different place of the world. Traffic control light has become a very effective tool for sequential control of the teaming number of vehicles on the road to avert what would have been a recurrent saga of ghastly accidents at the junctions. There have been many ways of achieving this, uppermost among these being the employment of electronic monitoring circuits that which is controlled by presto clock.

In developed countries, the employment of traffic personnels who would be jumped up and down at the centres of the junction just for the motorists to acknowledge their rigorous signs has long come of age. In developing countries where 24 hours traffic flow is involved, many societies are adopting the usage of the traffic light control. The advantage offered by this method of traffic control cannot be over emphasized. For one, it offers a more advanced