to mount side cameras on both rear vision mirrors of trucks so that vehicles and pedestrians are safer on the roads.
after having truck not seeing me at an intersection, I was in left land - he was in centre lane and not indicator lights on, the truck turns on his indicator and proceeds to turn left. I managed to attract his attention by sitting on my horn. I also watched an online video of a child and man in China being knocked over by a truck. they were on a motor bike and invisible to the truckie. https://www.youtube.com/watch?v=HnNULsLtKjc