Driverless, autonomous, or self-driving cars are being tested widely. They leverage GPS, odometry, radar, computer vision, and other techniques to sense what traditionally drivers have seen. Questions of safety, ethics, and computer security persist:
Drone technology has been harnessed by a variety enterprises, from commercial to educational, scientific to sportsman.
Hydraulic fracturing is a natural gas extraction method that remains controversial.
Positive train control is an automated system that monitors and controls train speed and movements in order to enhance safety. Rail Safety Improvement Act of 2008 (RSIA) required implementation of PTC by December 2015, but many railroads have failed to do so.
Like 2d copiers, 3D copiers create a replica based on provided input. The only difference is that the replica can be a 3d object instead of a piece of paper.