TRAINS EMISSION CALCULATION AND BETTER ERROR DETECTION

I propose to implement Trains Emission for Carbon Footprint Extension, currently, it is implemented only for 5 sources(of France), I intend to implement it for India, UK,USA, Australlia, European countries (including norway, germany, italy, sweden, greece), Canada. I also intend to improve the error detection system of extension and start integrating bus services on sites like kayak.