Signed by 177 countries in April, the Paris climate agreement has been hailed by business leaders and heads of state as the “end of the fossil fuel era
.” Now, as countries translate their intended nationally determined contributions
into domestic actions, we can expect to see the development of low-carbon policies at an unprecedented scale. In the transport sector, responsible for about one quarter of anthropogenic carbon dioxide emissions and the majority of petroleum consumption, the adoption of low-carbon transport policies has already been accelerating
for several years. Today, 83%
of new passenger car and light truck sales worldwide are covered by fuel-efficiency regulations. The United States, China, Japan, and Canada, which together account for half
of all new heavy-duty vehicles (HDVs) sales worldwide, have also adopted fuel-efficiency regulations covering those vehicles. Two other major vehicle markets, the European Union
, are working to adopt comparable efficiency regulations as well; when they do, 63% of global sales of HDVs will be subject to fuel-efficiency standards.