Trucks Available Today Can Improve Air Quality by 70 Percent  ( article from "Updates from the Diesel Technology Forum")

A new working paper out from California's South Coast Air Quality Management District that includes most of the Los Angeles region estimates a substantial increase in clean air benefits from new heavy-duty clean diesel trucks. The only trouble is these benefits won't be realized until 2023. California's policymakers should get the message that new clean trucks available today can provide substantial clean air benefits while also contributing to climate and petroleum reduction targets. Policies to encourage the purchase of more of these vehicles will not only provide immediate term clean air benefits, but also greatly contribute to petroleum reduction and climate goals newly established for California.....

http://www.dieselforum.org/news/trucks-available-today-can-improve-air-quality-by-70-percent