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Sacramento has signed a deal with a Silicon Valley firm to use downtown streets as a testing ground for self-driving vehicles that will be monitored by remote “drivers” sitting at computers.

Self-driving car companies testing in Pennsylvania may have to have a second safety engineer in the passenger seat if they want to comply with new state guidelines.

In a clash of old and new industries, Wisconsin frac sand producers say their business is threatened by a handful of railroads operating under outdated regulations. Wisconsin produces about a third of the nation’s supply of sand used to extract natural gas and oil through a process known as hydraulic fracturing, or “fracking.”

An ordinance prohibiting commercial motor vehicles from traveling in the Odessa, Texas, city limits is beginning to show its effect, as five truckers were found guilty of violating the law July 25.

The creation of a common chassis pool by the port authorities for Georgia and South Carolina will go forward.

The year has been another one for the record books at the Savannah ports.

Highways won’t cure Washington state’s traffic woes and preventing congestion is impossible, said Roger Millar, head of the Washington state Department of Transportation.

Uber’s self-driving cars returned July 24 to Pittsburgh’s streets four months after one of its autonomous SUVs hit and killed a woman crossing a street in Tempe, Ariz.

University of Nevada-Las Vegas is joining German research company Fraunhofer IVI to develop an autonomous delivery truck, the university announced.