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At the request of four Republican congressmen, the Office of Inspector General for the Environmental Protection Agency has announced plans to conduct an audit of a 2017 EPA study that concluded glider trucks are bigger polluters than trucks that meet newer federal emissions standards.

President Donald Trump said he’s ready to impose tariffs on an additional $267 billion in Chinese goods on short notice, on top of a proposed $200 billion that his administration is putting the final touches on.

Pilot Flying J recently dropped its court appeal of Santa Fe County’s decision to reject a truck stop proposed for a vacant parcel south of the Santa Fe, N.M., city limits.

WASHINGTON — The pace of hiring in the United States quickened in August, and wages grew at their fastest pace in nine years — evidence that employers remain confident despite the Trump administration’s ongoing conflicts with its trading partners.

WASHINGTON — Economists for trade associations representing manufacturing, construction and retail industries said during an industry conference here that they expect positive growth to continue for the remainder of 2018, with little chance of a downturn over the next year or so despite the threat of increasing trade tensions, rising interest rates and higher costs.

State and federal transportation officials amended on Sept. 4 the William H. Natcher Parkway-I-165 conversion agreement to designate the highway stretching from Bowling Green to Owensboro an interstate before several interchange projects along it are completed.

Airlines are starting to hedge against the risk that fuel prices could be driven higher by rules targeting another industry’s environmental performance.

WASHINGTON — The small role Congress currently plays in policy for autonomous vehicle technology could eventually slow, or impede, progress for states and firms testing such systems, a key House transportation authorizer warned on Sept. 5.

Florida posted the biggest surge among states in the use of heavy-duty trucks with clean diesel engines in 2017, notching an 81% jump compared with a year earlier, according to data from IHS Markit. This increase came as fleet confidence in the technology took hold and more freight-hauling opportunities opened up in the nation’s fourth-largest state economy, other experts said.

An “incursion” nine months ago that shut down the Federal Motor Carrier Safety Administration’s National Registry of Certified Medical Examiners still is causing delays in registering new examiners and backlogs for medical examiners to upload truck driver examinations, officials said.