What do you do?
I usually try to indicate to the driver by using the 'twinkle twinkle star' hand signal, but 2 recent incidents is making me think twice.
The first time after indicating to the driver, the driver turn on the head lights, wind down his window and show me the finger. The second, which just happened, the driver kept flashing his high beam at me and tailgate me for a considerable distance.
Wrong to indicate driver he forgot to turn on his head lights?