ok, say some grandma with bad vision was coming along and thinks that lane is a regular lane that traffic can travel in (granted..its not, but play along here) ..and she slams into you. now ...if you had this big blinking light that would cause her to pay attention and maybe correct her actions...she might be hurt and or killed ...along with you. granted she would be 100% at fault, but thats kinda the reason you use those blinker things.
i am just playing devils girlscout cookie delievery person..so dont think i am busting your balls.