masaki suda, nhk world, islamabad. >>> more than 4,000 people died in japan last year over automobileents and now one mother is doing what she can to keep children safe. >> reporter: a place that's safe for children. this playground in the city has a special message. the sign over the entrance says -- a playground for everyone. this boy was local and he died in a car accident when he was just 6 years old. in august of 2002, a truck driver fell asleep at the wheel and rear ended a row of stopped cars. it set off a massive fire which killed five people including this boy, his uncle and grandmother. his mother has kept his memory alive for over ten years. before meals, she puts rice in a bowl and places it in front of his photograph. >> translator: of course, a mother wants to feed her child, right? i want to carry on doing things for him and giving him the things that nay child would normally get. >> she has preserved the backpack that he was carrying at the time of the accident. >> translator: everything else was completely burned. this backpack was probably thrown out of the car by th