Abstarct: The United Nations Generel Assembly introduced the decade 2011 to 2020 as a decade of reduce the traffic fatalities. This organization, in different resolutions, has urged all the countries pay their especial attention to reduce the road accidents. The speed factor plays a key role in reducing the risk of the road accident; and one of the deterrence factors for unauthorized speed of cars is recording violation camera of the traffic police NAJA. The aim of this study is to analyse the effectiveness of recording violation cameras of the taraffic police in the studied highways in Tehran Metropolise.This occurs by use of data analysis techniques such as modeling through time series and regression. In this thesis, by descxriptive analysis of unauthorized speed violations in 5 arterial and crowded highways in Tehran, we study the process of violations along with the number of active cameras in there. In the inferential analysis section, we analysed the Tehran, Karaj and Hemat highways, in which we had studied them in descxriptive analysis, by modeling time series and non-liner power regression model.In appliying assessment data, the models fitted by Time series had less prediction errors then their equivalent regression models.In this prediction, the violation rate reduced by 32% in Tehran-Karaj highway and 28% in Hemat highway, compared to the violations in the same month in 2014 (1392).This shows the effectiveness of cameras in the studied range of these highways.