I've often thought about using an accelerometer to automatically cancel the turn signal, similar to how a car can, from the steering wheel position. Adding a light for engine breaking is as great idea that I hadn't even thought about doing manually.
The ultimate motorcycle (and bicycle) accessory would be something that could sense the rf/magnetic field from traffic sensors and transmit something back with whatever phase change is necessary to make it think its sensing a large car.
The ultimate motorcycle (and bicycle) accessory would be something that could sense the rf/magnetic field from traffic sensors and transmit something back with whatever phase change is necessary to make it think its sensing a large car.