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.

Eastern freight railroad CSX Corp. reported its third-quarter net income fell from a year ago, but posted record income from continuing operations for the period.

The national average price of regular gasoline plunged 35 cents in the two weeks ended Friday, to $3.31 a gallon, according to the latest Lundberg Survey of filling stations released Sunday.

Logistics and delivery firm Dynamex Inc. said Wednesday it has named James Welch its new chief executive officer, starting Nov. 1.

Accellos Inc., Colorado Springs, Colo., a provider of warehousing and logistics management software, said it acquired Prophesy Transportation Software of Bloomfield, Conn., for an undisclosed amount.

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.

The Bush administration has nominated David Kelly to head the National Highway Traffic Safety Administration, the Associated Press reported.

Manufacturing activity in the Chicago region grew in September, the National Association of Purchasing Management said Tuesday.