Okay, maybe not so clear. I was more going for the dog is not actually at the bus stop, terrifying people, if it so clearly sitting far away. Same as dogs walking down the street, stopping to sniff the roses. No one is saying that they should allow their dogs to go near, lick, jump on, whatever, a child that is afraid.
Fair enough, we have different ideas about what sharing is I guess. If there was a kid at my kid's stop that was afraid I wouldn't bring my dog there period, even 30 feet away. I still see that as at the bus stop. If I needed to walk her I would do it before the bus came or after, but I wouldn't combine my walk with their trip to/from the bus stop. Like another pp said, if the kids were fine with my dog, then I wouldn't have a problem bring her.