Abstract：This article takes the northern section of Tianjin Metro Line 4 as an example to evaluate the potential for carbon
reduction in the development of rail transit corridors under the TOD scenario, in response to the target requirements
of carbon peaking and carbon neutrality, and to provide a quantifiable reference for the government to research and
formulate incentive policies for urban rail transit projects at the corridor level. By analyzing the travel situation of
residents within a typical block sample, a mapping model between different types of block form units and residents’
travel activities is established. Then, under the premise of accommodating the same population and job increment, the
total carbon emissions around the rail transit corridor under the baseline trend scenario and TOD planning scenario are
calculated, and the carbon reduction emissions are obtained through comparison.
