What should you do when a law enforcement officer is directing traffic?

I believe the answer is: wait till he signals you to go

A law enforcement is assigned to direct a traffic if either there is an error in the traffic light system, or  the road is really packed to the point where traffic lights could no longer be able to clear it.
If the traffic lights are still functioning together with the officer, you need to completely ignore the traffic lights and prioritize the officers' direction.

Is there a picture that goes with this question?

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.