The research examines and analyzes the lack of public behavior in using public transportation in Makassar City. The study aims to identify and analyze knowledge, attitudes, and quality of service on behavior using public transportation. The research uses a qualitative descriptive approach located at the city service center. The total sample of 150 respondents using the stepwise analysis method. The results showed that people's behavior using public transportation was at a moderate level, the average knowledge was in the moderate category, while the average attitude and quality of service were in a low category. Service quality was the dominant factor influencing behavior in using public transportation.