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Heavy-duty truck sales in the United States grew for the fourth straight month in September, but year-to-date results remained weak and the recent national economic chaos led to a sharp drop in new orders during September.

Ryder System said it will acquire Transpacific Container Terminal Ltd. and CRSA Logistics Ltd., as well as CRSA’s operations in Hong Kong and Shanghai, China.

ORLANDO, Fla. — A fuel-optimization module acquired 12 months ago has since become a leading growth product for software vendor TMW Systems, which held its annual user conference in the heart of this resort-rich peninsula last week.

From maintaining optimum air pressure to avoiding jack-rabbit starts, a truck driver’s actions affect not only the life expectancy of tires but also a vehicle’s fuel efficiency.

Heavy-duty truck components supplier Eaton Corp. said its Vorad VS-400 collision-warning system has become a factory-installed option on all Freightliner Cascadia, Century and Columbia Class 8 trucks.

Trucking companies could do more to enforce rules that drivers get enough rest, and the government should consider moving toward mandating the use of new technologies to alert tired truckers, the Associated Press reported.

PeopleNet, which provides onboard communications and fleet management systems, said Monday it is integrating its eDriver Logs automated driver log application with LoadMaster dispatch and enterprise software from McLeod Software.

Truck components maker ArvinMeritor Inc. said it dedicated a new $30 million manufacturing facility in northern Mexico for trucks built in the United States and Canada.

Freightliner Trucks, part of Daimler Trucks North America, said it will offer Meritor WABCO’s new automatic forward-collision warning and braking system on its models Cascadia and Century Class S/T tractors.