The Biden administration finalized greenhouse gas (GHG) emissions standards for passenger cars and light trucks that almost fully erased changes by the Trump administration that, in turn, erased a rule finalized by the Obama administration.

The Environmental Protection Agency (EPA) on Monday announced new federal greenhouse gas (GHG) emissions standards for passenger cars and light trucks for model years 2023 through 2026. A U.S. Environmental Protection Agency rule summary announced the finalized standards. According to the rule summary, the new standards are consistent with the "Strengthening American Leadership in Clean Cars and Trucks" Executive Order signed by President Joe Biden in August 2021.
An article for The Washington Post, by Dino Grandoni, Faiz Siddiqui, and Anna Phillips, provides more details on the announcement, headlining a comparison between the newly finalized rule and the actions of the previous administration. To describe the details of the new rule, the article includes this summary:
The standards for model years 2023 to 2026, signed Monday morning by EPA Administrator Michael Regan, require that cars, SUVs and pickup trucks release an average of 161 grams of carbon dioxide per mile by 2026. The new Biden standards are equivalent to an average of roughly 55 miles per gallon by 2026 in laboratory testing. The average figure appearing on window stickers — and advertised EPA mileage — would be 40 mpg.
While those standards appear drastic, they don't erase the rollback of emissions standards imposed by the Trump administration. Obama-era rules "would have achieved nearly the same emission cuts a year earlier," according to the article.
The article also notes that the new emissions standards fall short of the lofty ambitions of the Build Back Better bill, which was delt a final blow by U.S. Senator Joe Manchin (D-West Virginia) a few days earlier.
The new limits on tailpipe emissions for the next four years mark President Biden’s biggest step yet to tackle climate change, but the move comes as critical components of his plan for an all-electric future just suffered a major blow on Capitol Hill. On Sunday, Sen. Joe Manchin (D-W.Va.) announced he would not support his party’s Build Back Better plan, which would have provided billions in federal support for building charging stations and encouraging consumers to buy electric vehicles.
FULL STORY: New Biden rule reducing climate emissions from cars and SUVs reverses major Trump rollback

Rethinking Redlining
For decades we have blamed 100-year-old maps for the patterns of spatial racial inequity that persist in American cities today. An esteemed researcher says: we’ve got it all wrong.

Montreal Mall to Become 6,000 Housing Units
Place Versailles will be transformed into a mixed-use complex over the next 25 years.

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

Texas, California Rail Projects Seek Out Private Funding
In the wake of Trump’s cuts to high-speed rail projects, rail authorities are looking to private-public partnerships to supplement their budgets.

Addressing Rural Homelessness in Kentucky
A Kentucky Lantern series focuses on the challenges unhoused Kentuckians face and efforts to provide support and assistance.

Santa Clara County Dedicates Over $28M to Affordable Housing
The county is funding over 600 new affordable housing units via revenue from a 2016 bond measure.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
City of Camden Redevelopment Agency
City of Astoria
Transportation Research & Education Center (TREC) at Portland State University
Regional Transportation Commission of Southern Nevada
Toledo-Lucas County Plan Commissions