I too live in Wales, and don't get out very much due to my disability. However, I had to go to the doctor's yesterday, and what a fiasco this 20mph thing is!! We started off on the very narrow country lanes, which we can legally drive at 60mph, an EXTREMELY dangerous speed in those conditions, not helped by the fact that a lot of the locals who have become familiar with the hills and bends, drive them like lunatics, quite often ending up with a car in the ditch or a dog walker having to jump out of the way as there is no footpath. We then went into an area of 20mph, with no visible reason for this limit whatsoever. Suddenly there was a 40mph sign, where there were houses, and about 50 metres later, went back to 20mph! It's no wonder people don't know what they're doing.
I feel that this change is yet again pandering to people who take no responsibility for their own safety. Surely as pedestrians, we have a responsibility to chose a safe place to cross the road. To listen out for traffic, if for some reason you need to walk in the road, and to keep our children safe, by having them on old fashioned reigns when they're tiny, going on to holding hands as they get older, and teaching them that roads ARE dangerous places, so they need to have their wits about them. We should not allow our kids to play with balls by the roads, as that often leads to them forgetting the dangers and running into the road while chasing a ball. If kids aren't capable of keeping themselves safe from the roads while playing out, then don't let them go out without you.
Of course I appreciate that accident's do happen, and that having a 20mph speed limit in areas around schools is, in theory, a good idea, but surely it would be better to encourage children to walk to school, thereby avoiding parents parking in ridiculous places, which are often the cause of accidents in the first place. Of course it's a terrible thing if anyone gets run over, and we all feel dreadful if it's a child, but how many people think about the poor driver, who was suddenly faced with a child running out between two parked cars after a ball, and who in reality couldn't have done anything to prevent the accident, but who usually gets the blame. The parent of the child should have been taking responsibility for them, not a driver who was simply going about his or her business, and because of someone else's failure to parent their child, ends up suffering those dreadful moments for life.