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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.

The American Concrete Pavement Association has requested exemption from certain hours-of-service regulations from the Federal Motor Carrier Safety Administration.

Federal Motor Carrier Safety Administration chief Ray Martinez will be a keynote speaker at American Trucking Associations’ conference next month to provide an update on new rules covering the industry.

Indiana Gov. Eric Holcomb’s recently announced $1 billion infrastructure plan will rely on a 35% increase to the rates that pertain to trucks on the Indiana Toll Road.

SALT LAKE CITY — A Utah driver who slammed her Tesla into a stopped firetruck at a red light earlier this year while using the vehicle’s semi-autonomous function has sued the company, saying salespeople told her the car would stop on its own in Autopilot mode if something were in its path.

REDDING, Calif. — An explosive wildfire that closed down dozens of miles of a major California freeway nearly tripled in size overnight, just weeks after a nearby blaze that left neighborhoods in ruins and killed eight people, officials said Sept. 6.