Crosswalk door / traffic light

Children guard system - Traffic light in School zone
In school zone, parentes can't protect their children from cars all the time
Especially children move fast and run into road so driver can't control this situation and aware well.
Crosswalk door have one door each. (Pedestrian standard) When the light is red, the door is closed. When the light is green, the door is opened. Even though driver can't recognize children because of short stature, diver can slow down and Pedestrian will be safe by the protection door