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Auto transporter Allied Holdings said late Monday that some of its subsidiaries had been granted interim relief from their union contracts, as the company had requested in April.

Air cargo shipments jumped 6% in March from a year earlier, the Air Transport Association said Tuesday.

Executives with technology firms and carriers said mapping software that optimizes delivery routes is becoming an important tool for reducing expenses as fuel prices rise.

The National Transportation Safety Board has again called for the installation of collision avoidance technology on new large trucks following its investigation of a 2003 accident that involved a tractor-trailer and several passenger cars at a toll booth in Illinois.

American Trucking Associations said it estimated that the June 1 transition to ultra-low-sulfur diesel would increase the cost of trucking’s main fuel by at least 5 cents a gallon, while lowering the energy output of diesel by 1%.

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Construction spending jumped 0.9% in March to an all-time record, the Commerce Department reported Monday.

Technology firms Terion Inc. and DriverTech Inc. said they have streamlined the transfer of data between a truck cab and the trailer by integrating systems.

The Institute for Supply Management said Monday its manufacturing index rose in April from the previous month.

Food distributor Sysco Corp. said Monday its fiscal third-quarter profit fell 14% on higher fuel and stock options expenses.