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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.

Goldman Sachs, which recently announced that it will convert into a federally regulated bank holding company, has purchased a minority stake in closely held American Traffic Solutions, a Scottsdale, Ariz., provider of electronic toll payment and video-based traffic enforcement systems.

TransCore, a provider of radio-frequency identification devices, introduced a new transponder that is compatible with multiple electronic toll-collection systems.

Qualcomm Inc. added an in-cab scanning service to its mobile computing system, and launched a new reporting module designed to help carriers monitor how much fuel their drivers are burning, the company said last week.

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.

Existing homes sales fell 2.2% in August, the greatest monthly decrease on record, the National Association of Realtors said Wednesday.

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.