This Ontario resident wants more transit services to adopt the sunflower pin. But what does it mean?

Alim Nathoo has no problem telling people he's on the autism spectrum and when he did just that to a service manager on board a Via Rail train, he was relieved to be met with kindness.

This Ontario resident wants more transit services to adopt the sunflower pin. But what does it mean?
A man stands in a mall with a lanyard with sunflowers around his neck.

Alim Nathoo has no problem telling people he's on the autism spectrum and when he did just that to a service manager on board a Via Rail train, he was relieved to be met with kindness.