Is it possible to have a four way traffic control that has an independent timing for each green light in d NWSE direction. All i can get from the internet is a NW and SE seqence
You need to explain more. Of course *real* traffic signals often have more complex timing than a simple one road gets green for a while, then the other gets green for a while.
Are you trying to simulate something more complex? You could use a microcontroller and devise a scheme as complex as you desire.