Funnily enough, my daily hack H***a has working indicators, but I never use them (hastily touches wood
)!
They're a good idea, but too close together and too small for most numbnuts to even notice them, so I prefer to develop a good sense of "what's that tw*t going to do next?" in the pursuit of my personal safety.
Good luck if you fit them, but it'll take more than a pair of flashers to keep you safe....