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Originally Posted by p38fln
2. The lovely state of California has banned any truck with a 2006 or older engine from its ports as of 1/1/2007 anyway, and I have a feeling they have a lot more in store for us
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They must have accelerated that, then. The article I found said that pre-1989 trucks were banned as of 1/1/2007. Those pre-1989 trucks were 14% of the fleet, but contributed half the pollution. The full ban of pre-2007 vehicles, which wasn't supposed to happen until 2012, reduces overall smog-producing emissions by 80%. The port of Los Angeles sees 40,000 trucks per day alone, so that's a lot of concentrated smog that gets trapped in the basin.