Regulatory Tracker Clean Car Rules — Corporate Average Fuel Economy Standards/Greenhouse Gas Standards EPA issued final multipollutant tailpipe standards for light- and medium-duty vehicles for Model Year 2027 through 2032 and released a final rule setting greenhouse gas standards for heavy-duty commercial trucks and buses. October 23, 2024
Regulatory Tracker Corporate Average Fuel Economy Penalties The National Highway Traffic Safety Administration published a final rule withdrawing the January 14, 2021, interim final rule and reverting to the December 2016 final rule. June 24, 2024
Regulatory Tracker The Social Cost of Greenhouse Gases (Carbon Dioxide, Methane, Nitrous Oxide) The “social cost of greenhouse gases (SC-GHGs)” (carbon dioxide, methane, nitrous oxide) quantifies the net harm to society of adding one ton of emissions of each of these GHGs in a year. SC-GHGs provides a range of dollar estimates that can be used to incorporate the social benefits of reducing emissions into cost-benefit analyses. December 22, 2023