Sharraxaadda

Hi, I was picking up my son today at the Central Middle School in the back of the school at the loading dock area. A trash truck was backing up as the children were being dismissed. 1) He almost hit a child 2) he almost hit my car, didn't even see me 3) my daughter was in the front seat and had a panick attack thinking the truck was going to hit us. Is it necessary for the trash company to be picking up trash at dismissal? I find this to be very dangerous and would think that they could pick up trash at the schools while the kids are in school!!