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San Francisco tourists, Phoenix suburbanites and now Canadian bacon — the list of driverless cargo keeps growing.

The CEO of Zoox, Amazon .com Inc.’s self-driving unit, expects autonomous vehicles to be present in cities “sooner than people expect,” but stopped short of saying when her own company’s product would appear on roads.

TUCSON, Ariz. — Pony.ai, a developer of self-driving cars based in China and Silicon Valley, will begin testing its autonomous vehicles in Tucson, with trained safety drivers behind the wheel, in a partnership with Pima Community College.

Elon Musk doesn’t want to hear complaints from customers trying out the driver-assistance system that Tesla Inc. plans to start charging $15,000 for in the coming weeks.

Travel center operator Pilot Co. and automated technology firm Kodiak Robotics on Aug. 23 announced formation of a partnership under which the companies will collaboratively develop autonomous truck services at Pilot and Flying J travel centers across North America.

U.S. House Transportation leaders recently pressed the Federal Communications Commission to open access to a band of communications spectrum set aside for safety operations for transportation entities.

U.S. auto safety regulators are scrutinizing Tesla Inc.’s in-car camera systems as part of a recently expanded investigation into whether the company’s automated driving technology is defective.

When it comes to autonomous vehicles, there isn’t just one way to go about safety. State regulators draft legislation. Independent firms create recommendations. Individual companies devise their own protocols. Stakeholders can agree on one thing: Safety is important.

Two House lawmakers formed a group to promote autonomous vehicle policies on Capitol Hill. Their aim is to generate support from colleagues for comprehensive legislation targeting the technology.