California is taking steps to decrease pollution on its highways caused by older diesel vehicles. A new law will prohibit any diesel car weighing more than 14,000 kg with an engine developed before the 2010 model year from functioning on California roads beginning January 1, 2023. This rule, part of a set of emissions rules implemented by the California Air Resources Board (CARB) in 2008, impacts around 200,000 cars and buses, including 70,000 heavy rigs.
