This Economist article on the cleaning of car emissions seems like a very successful example of negotiated rulemaking between government and industry.
Cars the world over will become appreciably cleaner in the coming years. The European Union is the strictest master. Under its “Euro 6” standards, due to come into force next year, diesel cars’ NOX emissions will have to be 84% below the limits set when it started regulating them in 2000, and their soot output must be 96% below the initial limits set in 1992. Earlier this year Beijing, in response to an episode of appalling air pollution, introduced new limits similar to the current EU ones, which it plans to tighten further in 2016.
The EU is also leading the way in cutting CO2 emissions, ahead of Japan, China and America. Carmakers know full well that they will have to keep investing heavily in low-carbon technology. Average CO2 emissions are due to come down from 130g per km now to 95g per km in 2020, and plans are already being drawn up for even tougher limits in 2025, of perhaps 70g.
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