Public transport plays a crucial role to meet the growing demand of sustainable and equitable cities. But merely providing the service does not serve the purpose. It should also be equally accessible to all. PTAL is one such tool to assess accessibility of existing PT system which uses 4 primary parameters of POIs, SAPs, walk network and frequency. However, studies suggest that there are other parameters as well which impact accessibility. Therefore, this research focuses on incorporating build cover, building density and land use in the standard tool. Hence, the revised tool is capable of providing accessibility and priority of the area for the service. The study also brings out how PTAL results differ for million plus cities and smaller cities.