The purposes of this research were 1) to study and analyze problems and obstacles of traffic management of Bangkok to be a city of transport, 2) to study factors of traffic management of Bangkok to be a city of transport, and 3) to present the guidelines for traffic management of Bangkok to be a city of transport. This study has been designed as the mixed methodology research. The research results show that problems and obstacles of traffic management of Bangkok to be a city of transport consisted of 1) a lack of overall management system, 2) the traffic controller cannot effectively enforce traffic laws and the commuters did not respect the law, and 3) the traffic technology was not up-to-date and the relevant organizations did not see its importance. With regard to factors of traffic management of Bangkok to be a city of transport, unity (U) had the highest mean score, followed by use of traffic technology (U), creation of traffic controller discipline (C), and participation in generating traffic discipline (P) respectively. These four factors can be determined as guidelines of traffic management of Bangkok to be a city of transport, called by the researcher, “UUCP”.