Information Technology Support for Traffic Lights Control

An application of information technologies support for traffic lights control is presented. The control task is formalized as a bi-level hierarchical problem solved in MATLAB environment. The traffic lights control is applied for a network of eight crossroads in the urban area of Sofia. The optimization problem is numerically tested with traffic intensity data and graphical interpretations are given. Comparison with the classical optimization control problem gives benefits for the bi-level optimization model.