This project aimed at providing solution to the problems of road traffic congestion in large cities in Nigeria especially at the ‘+’ junctions. The system is based on fuzzy logic technology and was designed to monitor and control traffic lights. A hybrid methodology obtained by the crossing of the Structured Systems Analysis and Design Methodology (SSADM) and the Fuzzy-Logic based Design Methodology was employed to build and implement the system. The application was crafted using java programming language. Problems were identified with the current traffic control system at the ‘+’ junctions and this necessitated the design and implementation of this great system to solve the problems. The resulting fuzzy logic-based system for traffic control was simulated and tested using a popular intersection in a Nigerian city; notorious for severe traffic logjam. It was observed that the fuzzy logic control system provided better performance in terms of total waiting time as well as total moving time