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An appeals court has upheld federal rules requiring “direct observation” of drug tests for transportation workers who either have failed or refused to take a test as a condition of employment.

Despite recession-related declines in trade with the United States, Mexico’s potential as an economic power has shippers and fleet executives taking advantage of the emerging market there.

Truck and engine manufacturer Navistar Inc. has challenged the Environmental Protection Agency’s authority to certify heavy-duty diesel engines using selective catalytic reduction to meet the agency’s 2010 standards for emissions of nitrogen oxides.

Manufacturing activity in the Chicago declined in April, showing contraction for a seventh straight month, the Institute for Supply Chain Management-Chicago said Friday.

New home sales increased 0.3% in April, the Commerce Department said Thursday.

WASHINGTON — The Department of Transportation has yet to make a decision on whether to back increased federal truck weight limits, Secretary Ray LaHood said.

Legislation introduced by Sen. Kay Bailey Hutchison (R-Texas) would ban the tolls on the National Highway System.

With the transportation industry challenged by extraordinary economic conditions, executives are devoting much time and effort to dealing with factors beyond their direct control, such as escalating fuel, vehicle and equipment costs. I believe they are leaving money on the table by not streamlining back-office processes that can offset these often-unforeseen external costs.

Truckload carrier Knight Transportation said it will boost its quarterly dividend to 5 cents per share, from 4 cents.