The mobility system is a major consumer of fossil fuels. All modes of transportation that consume fossil fuels contribute to global greenhouse gas emissions, as well as air and water pollution. Despite growing recognition of electric mobility, global oil demand for transportation (personal and freight vehicles, aircraft, rail and also marine) over the next two decades are expected to exceed demand for the previous two, largely because of projected transportation sector growth in the global south (APS).

A shift towards sustainable energy sources for transportation is needed to counteract the escalating climate crisis and its threat to our planet's ecosystem and society. Increased electrification and use of low-carbon fuels must be a priority over the next decade to decrease the negative impact of the mobility system. Electrification must be coupled with a decarbonisation electricity system, moving away from power generation from fossil fuels, in order to gain the potential carbon emission reduction benefits. Low-carbon fuels (LCF) such as biodiesel, bioethanol, green hydrogen and renewable compressed natural gas (R-CNG), for instance, can also help to lower carbon emissions from transportation.

Local governments can stimulate the use of low-carbon energy throughout the urban mobility system by improving the availability of electric charging infrastructure to help ensure that it can be financially attractive compared to that of fossil fuels. Additionally, cities can transition their own mobility fleet towards electric vehicles or to be powered with low-carbon fuels. The production of such low-carbon fuels can be produced by residual materials that are collected and managed by the municipality (such as developed biofuel from food loss and waste, which can power buses or waste collection vehicles).