April 02, 2026
The federal government and heavy-duty truck manufacturers have asked a California federal court to stop the state's "brazen defiance of federal law" and its efforts to strong-arm manufacturers into complying with stringent emissions standards, lest they be shut out from the market and face stiff penalties.
March 25, 2026
Heavy-duty truck manufacturers have told a California federal judge that state officials cannot be allowed to circumvent federal law and saddle manufacturers with stringent emissions standards and stiff penalties for noncompliance, saying the Golden State's regulations are unequivocally preempted.
March 11, 2026
California officials again asked a federal judge to gut key claims from heavy-duty truck manufacturers and the federal government challenging the 2023 deal in which the manufacturers agreed to stringent state emissions standards and stiff penalties for noncompliance in the coming years.
January 26, 2026
Heavy-duty truck manufacturers on Monday accused California officials of trying to delay litigation over a 2023 agreement that would saddle manufacturers with stringent state emissions standards and stiff penalties for noncompliance in the coming years.
January 22, 2026
Clashes over the scope of federal preemption in personal injury cases involving freight brokers and motor carriers, the Trump administration's gutting of Biden-era vehicle emissions standards and cuts to states' transportation and infrastructure funding are among the court battles that transportation attorneys are monitoring in 2026.
January 02, 2026
This year promises to be a big one for energy and environmental cases, with courts slated to consider California's authority to regulate vehicle emissions, the federal government's authority to rescind grant funding and whether the president can fire certain agency officials. Here, Law360 takes a look at key energy and environmental cases to watch at the U.S. Supreme Court and elsewhere.
November 03, 2025
California cannot enforce a 2023 agreement that would have subjected heavy-duty truck manufacturers to stringent state emissions standards and stiff penalties for noncompliance, after a federal judge signaled that federal law likely preempts the Golden State's standards.
October 27, 2025
The U.S. Environmental Protection Agency is urging a California federal court not to dismiss its intervenor claims alleging that the state violated the Clean Air Act through its adoption of new emissions standards for heavy duty trucks.
October 14, 2025
California is asking a federal court to dismiss the U.S. Environmental Protection Agency's lawsuit challenging the state's emissions standards for heavy-duty trucks.
September 18, 2025
California has told a federal judge that truck manufacturers seeking to renege on their commitments to follow stringent state emissions standards for heavy-duty trucks in the coming years aren't entitled to an injunction now, and the Trump administration cannot bulldoze California into falling in line.