At age 8, my father took the train alone over 100 miles, and transferred trains in New York City, to get home from summer camp.
At age 14, I flew cross country by myself, with transfers, in the days before cell phones.
When do you think kids should be allowed to travel alone?
When would you (or did you) allow your child to fly, or take a city bus, subway, or train without an adult accompanying them?
What limits have you set with your tween/teenage kids about traveling by themselves? What were you allowed to do?