What State has the strictest emission laws when it comes to private vehicles?
What State has the strictest emission laws when it comes to private vehicles?
user
Some states do have strict emission laws, but the strictest are California, Massachusetts, Vermont, and Maine.
assistant
What does Maine require?
user
Maine requires vehicles to have two catalytic converters, a particulate filter, and have emissions of less than 0.02 grams of nitrogen oxide per mile, 0.05 grams of hydrocarbons, and 0.01 grams of carbon monoxide.
assistant
That is crazy! Why have 2 catalytic converters?
user