Public Investigator asked the Department of Transportation why tests are still required, and what options exist for people ...

A new real-time monitoring system captures minute-by-minute changes in toxic metals resulting from traffic pollution.

Introduction: A Growing Focus on Agricultural Emissions. While Small Engines Market is typically analyzed through the lens of ...

Background Under the Clean Air Act, states are generally prohibited from setting their own tailpipe emission standards for cars and trucks. However, California has a unique exemption, which allows the ...

When President Donald Trump signed legislation to revoke California’s authority to enforce stricter tailpipe emissions ...

During a lengthy White House ceremony, he also approved measures to overturn the state’s policies to phase out the sale of medium- and heavy-duty diesel vehicles and to reduce tailpipe emissions from ...

New technology can help vessels glide quickly over water in less time and with fewer emissions than their diesel counterparts ...

Based on the theory of fuzzy PID control, a brand-new and efficient automobile exhaust emission detection system is successfully developed through constant speed, constant torque and constant power ...

More communities than ever have the opportunity to transition to clean, tailpipe-emissions-free electric school buses, thanks in large part to federal incentives like tax credits and grant programs.

Williams’ bill would strike an array of regulations including EPA tailpipe standards, the Transportation Department’s fuel economy standards and related state-level rules in California.