Readers sound off on President Obama's announcement of plans for post-2018 model truck fuel-efficiency/emissions standards.
The U.S. Court of Appeals for the District of Columbia has dismissed challenges to recent Environmental Protection Agency greenhouse gas rules.
Age and BMI cutoffs, California's Truck and Bus Rule, truckers off work Hours of Service regulations and heavy-duty engine emissions are among the issues featured.
The EPA’s decision comes amid contention scientists may have manipulated global warming data.
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