When you flash your headlamps and do the open palm gesture to let someone pull out of a side turning and they stare blankly at you.....so you repeat.....still blank stare.
Then just as you give up trying to help and move forward so do they and there's almost a collision.
hmmmm. Ever heard of flash for cash? Ever read the highway code regarding flashing of lights? Ever been filtering when the driver in front of you does this?
I was riding along the Eastern Road in Portsmouth a few years back. An oncoming driver slowed and flashed his lights, the young girl waiting at the side road to my right took this as an open invitation..... and t-boned the Mercedes estate immediately in front of me. It was not pretty or something I ever want to witness again.
When anyone flashes me I stare back at them. I'll go when the road is clear thanks, even if it means quite a long wait.