[header] How to play red light green light [title] Choose the traffic cop. [step] The traffic cop will be the one calling out the commands, directing traffic by yelling, " red light " or " green light. " the traffic cop is also the judge as to whether a child has moved on " red light. 
" additionally, the traffic cop can be considered the finish line, the goal of the game being to make it to the cop. If playing with a class, the teacher can start as the traffic cop.