Activating a turn signal takes just a flick of the finger, but that simple move apparently is too much for lots of drivers out there. A new patent filing by Tesla seeks to change that. The company envisions an automated signal, one that senses when a driver is getting ready to turn and activates the blinker on its own, reports CNET. What Electrek finds surprising about the patent application is that it appears to be designed for use with human drivers, not with self-driving cars. The technology stems from Tesla's Autopilot function. (A Tesla in Canada managed to fly, sort of.)