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As the vehicle population has grown and become increasingly concentrated in the world’s growing number of megacities, the number of people subjected to unhealthy levels of pollution continues to rise. Fortunately, advances in automotive technologies have made it possible for countries to respond to these health and environmental concerns by dramatically lowering emissions from motor vehicles and increasingly, countries around the world are taking advantage of them. Initial crankcase hydrocarbon controls were introduced in the early 1960’s, followed by exhaust carbon monoxide and hydrocarbon standards later that decade. During the mid to late 1970’s, advanced technologies, including cataljrtic converters were introduced on most new cars in the United States and Japan. These technologies resulted from a conscious decision by the Congress to force the development of new approaches and dramatically reduced CO and HC emissions beyond previous systems. As illustrated in this figure, at the same time that pollution levels were being reduced, the line to the left, vehicle fuel efficiency doubled. So the industry today I think can take great pride in the fact that new cars produced in the United States emit but a small fraction of the pollution they did a generation ago for each mile they drive and consume only half the volume of fuel. With knowledge of these technological developments spreading and the adverse effects of vehicle pollution becoming increasing apparent in many parts of the world, more and more people are demanding the use of these same types of technology in their countries. I hope you enjoyed this post. I have written more about the automotive industry. Why not read my article about lookup license services? I’ll see you there!