Delivery drones are coming to more US neighborhoods after getting off to a slow start

Delivery drones are so fast they can zip a pint of ice cream to a customer’s driveway before it melts.

Yet the long-promised technology has been slow to take off in the United States. More than six years after the Federal Aviation Administration approved commercial home deliveries with drones, the service mostly has been confined to a few suburbs and rural areas.

That could soon change. The FAA proposed a new rule last week that would make it easier for companies to fly drones outside of an operator’s line of sight and therefore over longer…