CARB Update

California Air Resources Board Withdraws Federal Approval Requests for Emissions Rules

Yesterday, the California Air Resources Board (CARB) announced the withdrawal of several requests for federal approval to implement stricter emissions rules for locomotives and semi-trucks. The decision was attributed to delays by the U.S. Environmental Protection Agency (EPA) in granting the necessary approvals.

One of the proposed regulations, introduced in 2023, aimed to phase out the sale of new diesel-powered semi-trucks and buses by 2036. Another rule, approved by CARB in the same year, sought to ban locomotive engines older than 23 years by 2030 and increase the adoption of zero-emissions technology for transporting freight from ports and within railyards. Both measures faced strong opposition from industry stakeholders, who argued that they would impose significant costs and be challenging to implement.

In contrast, just last month, the EPA granted a waiver for CARB’s Advanced Clean Cars II Regulation, which focuses on light-duty vehicles, as well as low-NOx regulations for heavy-duty highway and off-road vehicles and engines. At the time, EPA Administrator Michael S. Regan stated:  “California has longstanding authority to request waivers from EPA to protect its residents from dangerous air pollution coming from mobile sources like cars and trucks. Today’s actions follow through on EPA’s commitment to partner with states to reduce emissions and act on the threat of climate change.” (Source: EPA Press Release)

From our President, Jackie Polk, CTP: I applaud California’s decision to withdraw its request to the EPA for approval of its stringent zero-emission truck mandate. While we all share the goal of reducing emissions and fostering a cleaner environment, it is critical that these regulations are both practical and economically viable for the trucking industry. Collaboration and innovation are essential as we work towards sustainable solutions that support the trucking industry’s vital role in the economy without placing undue burdens on fleets and operators.

For more information about the waiver timeline or to view CARB’s press releases, visit CARB Waiver Timeline.