The driver still has to look before pulling out, the "flasher" should not be trusted. When me & my mate got hit in exactly this situation the driver was found at fault (it wasn't a junction or side road but an entrance to some flats, she had been flashed out and pulled straight into the opposite lane without checking first) We were overtaking a long queue of stationary traffic, I remember getting a good look in the driver's window on impact, at the back of her head, she was looking the wrong way.
The driver still has to look before pulling out, the "flasher" should not be trusted. When me & my mate got hit in exactly this situation the driver was found at fault (it wasn't a junction or side road but an entrance to some flats, she had been flashed out and pulled straight into the opposite lane without checking first) We were overtaking a long queue of stationary traffic, I remember getting a good look in the driver's window on impact, at the back of her head, she was looking the wrong way.