California drivers may see emissions testing as a costly nuisance, but it’s in place for a good reason.
While smog may not be bad in downtown Sacramento, it has long been a big problem in the Los Angeles area, with millions of cars, fog from the ocean and neighboring mountains trapping smog close to the ground. In 1943, Los Angeles was stricken with a smog so thick that residents believed they were under a chemical warfare attack by the Japanese! The state’s first serious attempts to address air pollution began in 1947, when Governor Warren signed the Air Pollution Control Act, authorizing the establishment of air pollution offices in every county in the state.
In the early 60s, General Motors developed Positive Crankcase Ventilation, a system which cycled exhaust gases back int ...[more]