The main object of this study was to design and implement
intelligent traffic control system. The system developed is able to
sense the presence or absence of vehicles within certain range by
setting the appropriate duration for the traffic signals to react
accordingly. By employing mathematical functions to calculate the
appropriate timing for the green signal to illuminate, the system can
help to solve the problem of traffic congestion. Hardware simulation
tests were successfully performed on the algorithm implemented into
a PLC (programmable logic controller)