At 6 I walked down to the Baker on the corner to buy bread. In Carlisle it gets dark very early and I did it whether it was dark or not.
When I was 8, living in Hong Kong, I caught a bus to and from school each day. It was 4 miles and when I lost my bus money I walked it. To be fair my mother was worried sick about where I was, and so relieved when I turned up. It never occurred to me to walk back to school and ask for help.
At 10, also in HongKong, my journey to school involved 2 buses and a ferry. I made the journey with my younger sister
At 13, I used to travel from Reading to Leicester Square to the Royal Dental Hospital every month. I had been doing the journey for at least a year with my mother, so knew the journey well.
At 16 I was on international flights with my younger sister, nominally in the charge of a hostess, but all her time was taken up by the young children so my sister and I were unsupervised. I got goosed for the first time in my life when a porter goosed me as I was getting into a minibus at Tehran Airport. A flight crew member saw it happen and came up to me and said quietly 'Next time someone does that to you kick him where it hurts.'
I took all this independence in my stride. A bit nervous, perhaps, the first time I made each journey, but certainly not traumatised.
Times have changed, there is so much more traffic and public transport is always crowded and we are much more aware of potential dangers, especially as there are now so few children on the streets compared when we were young.
When DS was 11 and his sister 9 we moved to live in a town a mile from the town centre. I promptly took them down to town by bus and walked them back so that they knew the route, DS was allowed to make the journey on his own, DD only with her brother until she was 11. By that time they were going off to secondary school on their own.
DGC's experience has been similar. At 11 DGD started walking a mile and a half to school in the morning and then back in the afternoon. Initially she did it with friends, but as they got involved in different extra curricular activities she now often makes the journey on her own. At 12 she and a friend weres allowed to travel into town together without an adult. They are both quite tall, DGD is 5ft 6in, so not obviously a child. She got a mobile phone when she went to secondary school.
I am a great believer in giving children as much freedom as possible as soon as possible. They need it for their own protection. Even back in my university days, I can remember fellow female students doing all sorts of dangerous things, because they had been so well looked after and protected throughout their childhood that they were utterly clueless and lacking in the street wisdom that I had been learning bit by bit since I was 6.