The second shoe has dropped in the Environmental Protection Agency's Tier II campaign, with the agency announcing a proposal last week to further limit nitrogen oxide (NOx) and particulate emissions from trucks above 8,500 lbs. gross vehicle weight (GVW). In May, the EPA proposed its first set of Tier II regulations covering vehicles up to 8,500 lbs. GVW (see Ward's Automotive Reports — May 10, '99, p.1). That rule should be finalized by year's end. The EPA says its new proposed ...

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