This traffic signal controller is based on uC AT89S5X. It is intelligent in the sense that it measures the traffic on two lanes and sets the signal duration accordingly. Proteus simulations with sources and compiled binaries have been included. The clocks in the simulation model the traffic on two lanes.-This is traffic signal controller is based on uC AT89S5X. It is intelligent in the sense that it measures the traffic on two lanes and sets the signal duration accordingly. Proteus simulations with sources and compiled binaries have been included. The clocks in the simulation model the traffic on two lanes.