instrumental and hostile behavior: factors affecting aggressive driving

Aggressive driving is perceived by many users as one of the most important problems in driving. aggressive driving is a crucial problem in iran and also in many other countries. the purpose of this study is to analyze the driving aggression conceptual model and the assess effect of the theory of planned behavior subsets on the aggressive driving behavior questionnaire and determine the index for aggressive driving behavior. drivers’ behavior is assessed with a questionnaire that included 54 questions and was randomly distributed among 400 drivers. confirmatory factor analysis, structural equations model, and regression are used to analyze the data. demographic variables, theory of planned behavior, and shinar’s model variable are considered in this study. fitness indicators such as goodness of fit index (gfi) and adjusted goodness of fit index (agfi), respectively equal to 0.98 and 0.93, pointed out that the model is reliable. the root mean square error of approximation (rmsea) also indicates that the model is suitable and its value is rmsea ≤ 0.08. the comparative fit index value is greater than or equal to 9.0 and in line with other indices, confirming the model is good. in this way, the model presented in the study has proper and consistent indicators (x^2=81.9 p<0.000, agfi=0.93, gfi= 0.98, rmsea =0.064), theories and other factors are able to explain aggressive behavior. the personality traits do not play a role in explaining the drivers’ aggressive behavior. the subjective norm, and perceived behavior control are related directly to the drivers’ aggressive behavior. drivers’ demographic characteristics are analyzed with regression and they do not play any role in aggressive behavior. also, attitude has the greatest impact from which it can be stated that the theory of planned behavior has an indirect effect on aggressive behavior. the present study identifies that the theory of planned behavior components is directly associated with aggressive driving behavior.