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Adaptive traffic signal control is the process by which the timing of a traffic signal is continuously adjusted based on the changing arrival patterns of vehicles at an intersection, usually with the goal of optimizing a given measure of effectiveness. In this paper a traffic signal program is developed in which the characteristics of a traffic signal cycle are optimized at the conclusion of every phase based on the arrival times of vehicles to an intersection, using stopped delay as the measure of effectiveness. The methodology which leads to the signal plan is shown to provide improvement in performance for a number of intersection configurations and traffic regimes over traditional forms of traffic signal control.

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The paper is trying to present the possible operational aspects for a pumped storage power plant. There are presented the possibilities of the study of operational regimes of the plant using experiments performed on lab equipment. The extrapolation of the lab results to the real plant is done using certain criteria of hydraulic similarities. In the end, it is proposed an algorithm for optimization of the plant operation, with the goal of efficient usage of hydraulic energy.

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