This thesis delves into the choice of sustainable transportation means and various factors that come into play. For such a developing country as China, it is of vital significance to boost its social and economical advance in a healthy and harmonious manner when it comes to providing guidance for the public to adopt transport modes of sustainability. With a high popularity of bikes and newly developed metro system, the city of Tianjin presents itself as an ideal example for the study of sustainable transport means. I chose this city for questionnaire surveys in hopes of not only identifying the principal factors that have an effect on people's choice of transportation modes, but more importantly offering significant references for the government in making transportation policies