Autism / Autism Spectrum Support Group
Autism is classified as a neurodevelopmental disorder which manifests itself in markedly abnormal social interaction, communication ability, patterns of interests, and patterns of behavior. Although the specific etiology of autism is unknown, many researchers suspect that autism results from genetically mediated vulnerabilities to environmental triggers.

You are so right about the part about "being the adult". Unfortunately I learned this "on the job" (after I already had my son and saw things not working). But, I see a lot of parents not doing this and I wonder if filing a complaint would prompt some supervisor to clue the bus driver in.
Anyway, I'm glad everyone its getting a break and I wish you all a more peaceful "next year".