Most pedestrians and cyclists don't realise just how difficult it is to see them under artificial light, particularly in poor driving conditions. I suppose one can only blame the educational system for this lapse.
The problem becomes magnified when women wear the black version of the Hijab.
I few years back I almost ran over a woman in a Hijab. It was at about 5 in the morning, with a fair amount of rain. She crossed the (unlit) road somewhere near Avissawella. Luckily for a moment the Hijab lifted and I caught a glimpse of her ankle in the headlights. I couldn't see the rest of her at all. I braked, the brakes locked and the car went into a skid. I turned the wheel but nothing happened. Luckily the ABS kicked in after a few moments and the car swerved away, otherwise I would have killed her.
So please, for your own safety and that of others, please carry something white at night.