All of my families have a minimum 45 minute commute at rush hour so there is some leeway. Since they all pick up within a 15 minute window it is usually all of them late with the same accident story. Mostly if you are a few minutes late but still before I would close I don't get as upset or charge for the occasional infraction.

I really miss my old family. She had an hour commute to work and was late picking up more than she wished to be but I understood the situation as she was not in a position to just leave till boss gave her permission to leave. If she was late more than two times in a week she always baked me a loaf of banana bread on the weekend.