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In spite of increasingly strict regulations in some states and the rise of electric bikes, scooters, mopeds, buses and cars, the vast majority of vehicles on roads today have tailpipe emissions.
Catalytic converters have proven to be reliable and effective in reducing noxious tailpipe emissions. However, they also have some shortcomings in use, and also adverse environmental effects in production: An engine equipped with a three-way catalyst must run at the stoichiometric point, which means more fuel is consumed than in a lean-burn engine.
The Environmental Protection Agency in April 2023 proposed requiring a 56% reduction in new vehicle emissions by 2032. US to soften tailpipe rules, slow EV transition through 2030 Skip to main content
The first legislated exhaust (tailpipe) emission standards were promulgated by the State of California for 1966 model year for cars sold in that state, followed by the United States as a whole in model year 1968. Also in 1966, the first emission test cycle was enacted in the State of California measuring tailpipe emissions in PPM (parts per ...
The U.S. House of Representatives voted narrowly on Friday to repeal clean-vehicle rules adopted in March to cut tailpipe emissions by 50% from 2026 levels by 2032. ... and will reduce greenhouse ...
The long tailpipe is an argument stating that usage of electric vehicles does not always result in fewer emissions (e.g. greenhouse gas emissions) compared to those from non-electric vehicles.
Biden has made fighting climate change a hallmark of his presidency and is seeking to slash carbon dioxide emissions from gasoline-powered vehicles, which make up the largest single source of U.S ...
One way the program would reduce costs is by taking advantage of on-board diagnostic (OBDII) technology that has been installed on new vehicles since 1996. The program will eliminate tailpipe testing of post-1999 vehicles and instead use the vehicle's own emissions monitoring systems. This system has saved consumers in 22 states time and money ...