The article reviews the methods, used in Russia to determine saturation flow while computing regime of traffic lights regulation for city motor roads. The authors have suggested a new tool of mathematical assessment of the desired quantity in order to achieve better quality of road signal regulation. The proposed method of determination of saturation flow as compared to classical and foreign methods, allows to take into account a larger number of parameters and to achieve a more exact result.

The researchers have also tested the innovation model by using it at real street intersection and organized implementation of the study results in the framework of cooperation with municipal administration of the city of Belgorod. The study has shown that the optimum regime of traffic lights operation reduces car delays by 15–25%.