![Researchers in Singapore reveal advanced drone traffic system that uses 'virtual fences' to prevent crashes | Daily Mail Online Researchers in Singapore reveal advanced drone traffic system that uses 'virtual fences' to prevent crashes | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2015/07/28/21/2AEA90F700000578-3177775-There_would_be_a_slow_lane_for_local_traffic_below_200_feet_60_m-m-4_1438116532575.jpg)
Researchers in Singapore reveal advanced drone traffic system that uses 'virtual fences' to prevent crashes | Daily Mail Online
![Safety Reminder! 400 feet or less. This person is flying his drone around a high traffic, helicopter tour location in Seattle. : r/dji Safety Reminder! 400 feet or less. This person is flying his drone around a high traffic, helicopter tour location in Seattle. : r/dji](https://i.redd.it/netgmtbolcj11.jpg)
Safety Reminder! 400 feet or less. This person is flying his drone around a high traffic, helicopter tour location in Seattle. : r/dji
![Miami-Dade Police on Twitter: "Everyone flying drones should follow these basic safety guidelines at all times. Even the sky has limits. Learn the drone laws. #SBLIVJIC https://t.co/B8imnv8Isl" / Twitter Miami-Dade Police on Twitter: "Everyone flying drones should follow these basic safety guidelines at all times. Even the sky has limits. Learn the drone laws. #SBLIVJIC https://t.co/B8imnv8Isl" / Twitter](https://pbs.twimg.com/media/ENYBU2DW4AMJVaH.jpg)