All vehicles have an auto-sensor that detects when the steering mechanism is turned past a certain point and activates the fucking turn signal. Deactivates it once the steering mechanism returns past that point.
Better rule, if the vehicle detects that the turn signal is not active and you're making a turn, it engages temporary self driving and delivers an electric shock to the crotch .
On multi-lane merge ramps is the guy in the right lane signalling his left blinker because his steering wheel is turned or is he planning to dive into your lane before the merge?