# Plain Language Summary: Congressional Disapproval of EPA Heavy-Duty Vehicle Emissions Rule

This bill is Congress's way of saying "no" to a new Environmental Protection Agency rule about pollution from heavy trucks and buses. Specifically, it targets the EPA's Phase 3 greenhouse gas emissions standards for heavy-duty vehicles—basically, the agency's latest requirements for how clean these big vehicles need to be. If this bill passes, it would cancel that EPA rule entirely, meaning those new pollution standards would go away.

Here's what this means in practical terms: The EPA had created stricter pollution limits for trucks, buses, and other heavy vehicles to reduce greenhouse gases like carbon dioxide. These rules would have required manufacturers to make these vehicles cleaner over time. By using this special congressional process called a "disapproval resolution," lawmakers are trying to block that rule before it takes full effect. If they succeed, truck and bus manufacturers wouldn't have to meet those tougher pollution standards, which means these vehicles could continue producing more emissions than the EPA wanted to allow.

This affects several groups of people differently. Environmental advocates and people concerned about climate change would see this as rolling back progress on pollution. Truck and bus manufacturers might welcome it because they wouldn't face the costs of redesigning engines and systems to meet stricter standards. However, communities near highways and ports—where heavy trucks and buses operate frequently—might experience worse air quality if the rule is killed. Consumers could potentially see slightly lower prices for trucks and buses if manufacturers don't have to invest in cleaner technology, though this savings would likely be minimal.

Providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles-Phase 3".