Regulations for automobile emission standards began with vehicles manufactured in which year?

The regulations for automobile emission standards began with vehicles manufactured in 1968. This was a seminal year as the U.S. government took a significant step to address air pollution issues associated with motor vehicles. In 1965, an initial attempt to regulate emissions was proposed, but it wasn't until 1968 that the first actual emission standards were established under the newly created Federal Motor Vehicle Control Program. These regulations aimed to limit the amount of harmful pollutants released into the atmosphere from automobile exhaust, marking a pivotal moment in environmental protection and public health policy.

The introduction of these standards represented growing concerns about air quality and health impacts from vehicle emissions. This regulatory framework laid the groundwork for all subsequent emissions controls and established the precedent for future environmental legislation.

It is important to understand that while the other years mentioned had unique significance in automotive history, they did not inaugurate the specific set of regulations focused on emissions as formally defined in 1968.