On Friday and Sunday, you can have the sign out all day. On Saturday, when judging begins, the sign must be put away. However, once you know your car has been judged (indicated by the dot placed on your dashcard), you can put the sign out. But, please secure it well so it doesn't damage any cars if it gets knocked over by people or wind, including your own. I always put my informational signs in the trunk, unless there is a full space next to me.