The carbon emissions from transportation have an undeniable impact on global climate change. This article focuses on the central urban area of Chongqing City as the research area and uses IPCC's reference method to calculate the carbon emissions from transportation in Chongqing from 2016 to 2020. The study estimated the carbon emissions from transportation vehicles in terms of fossil fuels and electricity, and analyzed the relationship between the carbon emissions of transportation vehicles powered by fossil fuels and electricity respectively. The study found that the carbon emissions from transportation in Chongqing increased during the study period, with gasoline and diesel vehicles accounting for the majority of emissions. In addition, this article also analyzed the role of promoting electric vehicles and achieving electrified transportation in reducing carbon emissions from transportation vehicles, which was found to be an effective way. Therefore, this article suggests that efforts should be made to promote and develop electric vehicles, while encouraging and promoting the achievement of electrified transportation to achieve the goal of reducing carbon emissions from transportation vehicles