Commuterline plays an important role for transportation planning in Indonesia, and it is essential to learn more on how to motivate people to actively use this public transportation facility. This paper presents an empirical investigation to explore different factors influencing the use of this publica transportation facility. The proposed study develops a questionnaire in Likert scale and distributes it among 374 people who had good experience of using commuterline in their daily lives. The questionnaire is designed to learn the effects of environmental, individual, consumer resources and psychological factors. Using some statistical techniques, the study has determined that psychological factors are the most important elements influencing consumer behavior to use this public transportation followed by consumer resources, product knowledge and individual characteristics.