Incoherent
Would be a term to describe an addict in withdrawal
If i understood your question right, the cars going straight have to keep going until the red light. but people going either left or right, have to slow down for the other people on the other side of the intersection to cross going either left or right.
Incubation period: In medicine, the time from the moment of exposure to an infectious agent until signs and symptoms of the disease appear. For example, the incubation period of chickenpox is 14-16 days. In biology, the incubation period is the time needed for any particular process of development to take place.
In a study, the independent variable is the thing that you change to see how the change produces different results. In this study, the independent variable would be the use of nicotine.