The purpose of this study was to investigate the role of control source and risk perception in predicting the behavior of taxi drivers in Karaj. The research method was descriptive-correlation. The statistical population of this study was all 718 young taxi drivers in the city of Karaj. According to the Cochran formula at the level of 0.05, 250 young taxi drivers in Karaj were selected by available method. Data gathering tool was Manchester Driving Behavior Questionnaire, Rutter Control Source Questionnaire and Randemo and Avereson Risk Perceptions Inventory. Data were analyzed using Pearson correlation and linear regression and stepwise regression. The findings showed that there is a significant relationship between control source and risk perception with driving behavior of young taxi drivers, and the control source, risk perception, and personality traits are predictive of driving behavior of young taxi drivers which these results point to cognitive and excitement emphasis in social normative behaviors. Manuscript profile