This research aims to identify the correlation between community knowledge about the traffic regulation and their attitude with the legal compliance. This research based on the traffic violation in Makassar. The research method is a quantitative method with a questionnaire as a research instrument. Analysis of data used crosstab method. The result shows that Knowledge of road users is related to legal compliance. The higher the knowledge, the better the obedience. However, the closeness of the relationship between the two variables is very small. The attitude of road users is also related to legal compliance. Attitudes to maintain traffic order encourage legal compliance from road users. These two variables are very closely related.