US transportation chief defends drone rules

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Amazon is not happy, but the FAA is sticking to its guns on its proposed drone rules, which would make it impossible to use drones for deliveries. Under the rules, drones can only be used in daytime, and must be kept in sight of the operator ? a requirement that effectively rules out their commercial use. But the FAA has said that companies will have a chance to comment on the plans before any rule is enacted. Amazon has countered ...