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Truck dealership Rush Enterprises’ third-quarter net income fell to $8 million, or 21 cents a share, down from $13.1 million, or 34 cents, a year ago.

NEW ORLEANS — Fleet executives said that despite the benefits of using safety technology, attitudes within the industry need to change in order to have wider acceptance.

The Justice Department filed an amicus brief in support of American Trucking Associations’ challenge to the Ports of Los Angeles and Long Beach’s port concession plans.

Iteris Inc., which makes lane-departure warning systems for the trucking industry, said late Tuesday its fiscal second-quarter profit decreased from a year ago.

Transportation and third-party logistics firm C.H. Robinson Worldwide said its third-quarter profit rose to $93.6 million, or 54 cents a share, from $83.7 million, or 48 cents, a year ago.

The Federal Motor Carrier Safety Administration soon will introduce a program that will list certified medical examiners on a national registry and require all interstate commercial truck drivers to obtain their medical certification from an approved examiner.

Greatwide Logistics Services, a provider of non-asset-based transportation and third-party logistics services, said it will be acquired by a private investor group.

California environmental regulators said they are beginning to enforce the state’s five-minute idling limit for diesel-fueled commercial vehicles, including those with sleeper cabs.

Daimler AG, citing a “fundamental change” in the heavy-duty vehicle market, will drop its Sterling Trucks brand and cut North American production capacity 20% by closing two factories, including its one-time flagship plant in Portland, Ore., the company’s top executive said last week.