Today, urban transportation and its effects and consequences, in addition to the physical and environmental spheres, are problematic in the social and cultural spheres, as it has more complex dimensions in the metropolitan cities of developing countries. Thus, considering that Tehran city as the largest metropolis faces a population density and massive volume of transportation and transportation inside and outside the city, and also the technical and infrastructural aspect has been dramatically increased in recent years, but still the consequences and transport implications in environmental and health areas, is one of the most important issues in Tehran. Given the importance of this matter, the central issue of the present study is whether the social dimension of urban transport and the strengthening of this dimension has an impact on social development. In this regard, the argument is that strengthening the social dimension of urban transport as social capital, leads to the formation of social development in the city. In order to study and analyze this issue using the documentary and library research method and using the theoretical analysis tool and its analysis, we try to investigate the concepts of social dimensions of urban transportation and social development, the role of social dimension of urban transportation in social capital and, consequently, the formation of social development based on theoretical implications. The findings of the study show that in a broad conceptual dimension, social development, namely, the improvement of the human condition, which strengthen social security indicators, social participation, education and culture, and social identity, in order to reduce the social damage to urban transportation spaces action and it leads to the creation of social capital and the final product of this process is the formation of social development in the city, and as a result, social capital as a social dimension of urban transport plays an important role in the social development of Tehran.