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One of the more puzzling questions arising from the revolution in autonomous vehicles and on-demand services is what impact it will all have on cities.

Houston will join 21 other cities in a national partnership aimed at addressing persistent transportation challenges as technology and mobility choices have planners rethinking how streets, sidewalks and private spaces interact.

The fatal crash involving an Uber self-driving car in Arizona last month has not dissuaded the North Carolina Turnpike Authority from urging companies to test autonomous vehicles on the Triangle Expressway in western Wake County.

When a woman crossing an Arizona street was struck and killed by a self-driving Uber car late last month, it sparked a swift public reckoning over the near-term future of autonomous vehicle testing on public roads.

California began accepting applications April 2 for permits to deploy self-driving cars on public roads without a human backup driver at the wheel.

U.S. lawmakers have applied a light touch in regulating robot cars. At the national level, the Trump administration has proclaimed that driverless-car guidelines should be “entirely voluntary” for automakers, and bills pending in Congress would clear the way to putting tens of thousands of autonomous cars on the road — orders of magnitude more than the few hundred in the country today — before federal safety regulations are set.

The only engineering facility built expressly to test self-driving vehicles will officially open April 4 at the historic 335-acre Willow Run site just west of Detroit.

Jarrett Cos. has purchased a 53-acre property in Seville, Ohio, that it expects eventually will be used by driverless, autonomous trucks.

Two months after crediting Republican tax cuts with fueling new investment in Indianapolis, FedEx has canceled a plan to build a large new project in Greenwood, Ind.