About the blinkers. When they are very near the main headlight, they are not easy visible, because the mainlight reflects the bright light when human eye does not reconize the smaller blinking light very near. Some drives with high beam light that makes the situation even worse when blinking.
That is why the blinkers are made away from head drive light, horizontally and vertically, that is understood for example in Europe.
Some this and some that, safe rides everyone.