Escalator for Children / escalator

All the time since, the safety problem on that children ride the escalator are worrying.The main reason is that the children taken only by adults can not hold the handrail. This design is a good solution to this problem,which let the children have armrest .It can help children not fall on the escalator.
This escalator uses two arms and a drive device,two handrails can operate together. So it will not increases too much cost of equipment.