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The Senate Commerce, Science and Transportation Committee advanced the nominations of several other key administration officials to the full Senate on July 21, including the nomination of Deborah Hersman to lead the National Transportation Safety Board.

Trucking groups hailed the decision by the National Conference on Weights and Measures not to proceed with proposals to regulate the temperature of retail fuel at the pump.

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.

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.

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.

A two-mile stretch of Interstate 75 damaged by a fiery explosion last week is expected to reopen Monday, the Detroit Free Press reported.

Navistar Inc. said it has completed 18 months of laboratory and field tests of its “advanced” version of exhaust gas recirculation engine technology that will be used to meet 2010 federal emission requirements.