Tire factories must now control pollution from a part of their operations that was previously unregulated

US environmental regulators just tightened air pollution rules for tire factories. This means a specific part of the tire-making process, which previously had no limits on hazardous emissions, must now meet new standards.

This rule closes a loophole in air pollution control for tire manufacturing. For years, a key part of the process that releases hazardous chemicals into the air had no specific limits. Now, companies must invest in new equipment or change their methods to reduce these emissions.