Here is the question.  What are the determing factors when it comes to the installation of stop sign and a signal light.  In other words when are there to many cars for a stop sign and not enough cars for a signal light?
   The reason why I decided to do my senior mathematical modeling project on this is because on the way to school everyday there was a particular intersection with a four-way stop sign.  This stop sign produced unecessary delays for the cars traveling on the major street.  That is when I asked myself what are the factors that determines what kind of traffic signal is used at an intersection.

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