Abstract
This paper attempts to evaluate the local people acceptance towards car free day program by developing a new dynamic structural model. On the other words, in this paper some factors/variables have been identified and discussed which have significant effects on car free day intention using aggregate analysis and structural equation modeling to investigate the cause effect relationship. According to the findings, most of the people in Surabaya are accepting the car free day program positively. On the contrary, the majority of inhabitants don't agree to move the car free day program from weekend to workday. In terms of cause-effect analysis, car free day intention is highly related to utility of car free day and again utility of car free day program is also strongly correlated to CO emission reduction. So it is found that CO is significantly correlated to car free day intention.