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U.S. retail diesel prices dropped 4.6 cents last week to $2.496 a gallon, the Department of Energy reported — the fourth straight decline — but rising crude oil costs will soon lead to a reversal of that trend, a department analyst predicted.

Vitran Corp. said Thursday its second-quarter income fell to $400,000, or 3 cents a share, compared with $4.6 million, or 34 cents, a year ago.

Burlington Northern Santa Fe Corp. said its second-quarter profit improved but its revenue fell on lower overall freight demand.

Canadian transportation firm TransForce Inc. said its second-quarter net income fell to C$18 million, or 21 cents a share, from C$19.3 million, or 22 cents, a year ago.

Illinois has joined the 49 other states in adopting a uniform 80,000-pound truck weight limit law for state routes and other local roads.

Truckload carrier Knight Transportation’s second-quarter profit was about even with a year ago at $12.6 million, or 15 cents a share, compared with last year’s $12.7 million, or 15 cents.

Deutsche Post DHL has signed a five-year telecommunications agreement with AT&T, in which AT&T will provide telecommunications to Deutsche Post DHL units throughout the United States.

Volvo AB said Tuesday it lost $725 million, or 36 cents a share, more than analysts’ estimates, and said it was facing a “difficult” third quarter in light of lower truck sales, Bloomberg reported.

Transportation and third-party logistics firm C.H. Robinson Worldwide reported a second-quarter profit of $92 million, or 54 cents a share, up slightly from $90 million, or 52 cents a share, a year ago.