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Don’t be surprised if the next time you get a package from Amazon that the item arrives in a car rather than in a white Amazon van or a big UPS truck.

Uber Technologies Inc. has reverted to one of its bad-boy habits: ignoring regulators. California Department of Motor Vehicles officials said Dec. 14 that the ride-hailing provider is breaking the law by rolling out self-driving cars in San Francisco without their approval.

The U.S. Department of Transportation on Dec. 13 issued a proposed rule offering guidance for the development of vehicle-to-vehicle technologies that would provide advance warning of potentially life-threatening crashes for light vehicles.

Just weeks after making what it called the world's first shipment by a self-driving truck, Otto plans to travel a 35-mile stretch of U.S. Route 33 in Ohio in another test of its autonomous technology.

LAS VEGAS — Advancements in trucking technology are paving the way for the industry to experience two-vehicle platoons soon, but the driverless heavy-duty trucks idea remains a distant vision, according to executives from leading firms in both industries.

While many technologies will likely play a role in shaping the future of transportation, two of the most important will be the emergence of automated driving systems and the continuing evolution of data analytics.

It’s a dire warning for a truck driver who has taken a wrong turn — a banner hanging over the roadway reading, “If you hit this sign you will hit that bridge.”