The U.S. will take another step towards regular commercial flight of drones on Friday when the Federal Aviation Administration closes a two-month public comment period on proposed rules.

Over 3,600 comments have been submitted as part of the process, which seeks feedback on regulations that would allow companies to fly drones, provided they remain within line of sight, stay below 400 feet and don’t fly over people. Drones also can’t be flown within 5 miles of an airport, unless the airport has been notified and given clearance for the flight.

Currently, commercial operation of unmanned aircraft is banned unless a company applies for and gets a special waiver, but the new rules will change that. They are expected to enter force in late 2016 or early 2017.

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