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The Environmental Protection Agency has asked a federal court to dismiss a Navistar Inc. lawsuit seeking to require that the agency test selective catalytic reduction engines with the emissions systems disabled or used improperly.

The U.S. Equal Employment Opportunity Commission filed a lawsuit recently against Old Dominion Freight Line Inc., saying that the carrier’s policy of not permitting drivers with a history of alcohol problems to return to driving, even after treatment, violated the Americans With Disabilities Act.

California’s attorney general announced a settlement last week with seven Southern California port terminal operators to resolve the state’s claims that residents near the ports were exposed to dangerous levels of diesel exhaust from the terminals.

A U.S. appeals court last week reversed a lower court’s ruling that blocked ABF Freight System from challenging three cost-cutting agreements between YRC Worldwide Inc. and the Teamsters union.