Globally, the transportation sector contributes about 25% of all CO2 emissions. In the US, the contribution is 28%, with light-duty vehicles – cars, SUVs, and small trucks – responsible for 59% of transportation emissions and 17% of all US emissions. The sector also includes aircraft and ships, which have limited potential for electrification, and rail, which comprises only 2% of transportation emissions. Municipal and school buses are good candidates for electrification.
So, road vehicles, in particular light-duty vehicles, are where the most opportunity lies for GHG reduction in the sector. Sounds simple, but it’s more complicated than just replacing internal combustion engine (ICE) vehicles with electric vehicles (EVs).