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A House cap-and-trade energy bill would “add another layer of volatility” to the already erratic price of diesel fuel that could jeopardize the economic viability of trucking companies, Tommy Hodges, first vice chairman of American Trucking Associations, said last week.

Truck and engine manufacturer Navistar Inc. last week leveled new allegations against the U.S. Environmental Protection Agency, accusing the federal regulator of privately and illegally giving its competitors the green light to deploy a selective catalyst reduction emission control technology that could be implemented only with an “illegal relaxation” of EPA’s 2010 nitrogen oxide emission standard.

The accuracy of the Global Positioning System could be compromised as early as next year if the U.S. Air Force cannot meet an ambitious schedule for space and ground infrastructure deployment, according to a new report from the Government Accountability Office.

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 emission standards, saying EPA skipped an important regulatory step.

Truckers who pull refrigerated trailers into and around California have less than two months to prep for a rule that requires the small diesel engines that power older reefers to meet a state emission standard.

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.

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.

With respect to the senators, when planning the needs for surface transportation, what practical experience do they or anyone reporting to them have in transportation?

NEW YORK — Trucking executives said the uncertainty about new engine technology required to meet federal emissions standards next year would likely keep them from buying many trucks during 2010.

The Obama administration last week announced stricter requirements for automobile fuel efficiency and a first-ever national greenhouse gas reduction standard for cars and light trucks. Though heavy trucks are not immediately affected, an industry official suggested similar changes could be coming within the next decade.