An indicator (yellow) light to the existing brake light, which is situated in the rear window (mostly top) of all vehicles. Therefore not only would the brake light be visible to drivers behind the vehicle but also the indicators showing whether the vehicle planned on turning right or left.
Addition of a light each side (right and left) to the existing brake light panel installed in the rear window or boot spoiler of vehicles.....linked to the indicator shaft, thereby giving drivers behind an indication of when the driver is turning left or right not just braking.
Problem this idea/invention addresses:
The problem of not being able to see what traffic ahead is planning on doing - turning right or left.