The presence of a new, more sophisticated, cheap and efficient mode of transportation (Go-Jek) has led to conflicts with motorized tricycles. To explain the conflict between motorized rickshaws and Go-Jek, this study uses Ralf Dahrendorf's conflict theory. The research method used in this research is qualitative research with case study type. The data in this study were obtained through the results of observations, documentation, literature studies, and interviews conducted on 12 research subjects, namely 4 people from base rickshaws, 4 people from online motorcycle taxi drivers. And there are 2 key informants, namely staff at the Medan City Transportation Service, and the community. The results of this study are in the form of the process of occurrence and ongoing conflict between base rickshaw pullers and online motorcycle taxi drivers (Go-Jek) due to differences in income and declining passengers. The location where the conflict occurred is at Plaza Medan Fair. The conflict occurred based on the existence of an interest group, in which this group wanted a change in the transportation sector. So it asks to take advantage of information and communication technology sources by modernizing transportation modes and bringing up online transportation (Go-Jek). As a result of the conflict that occurred between the pedicab driver and Go-Jek, there were also aspects of social change. Social changes that occur from the aspect of lifestyle and changes in the selection of public transportation modes used by the community in their activities.