Eddie  Hi Eddie, yes, this can be done.  We can sell splitters and 24" extension cables that can be used to connect multiple intersections.  However, each traffic light still needs its own control board, so all you are really saving is the master controller, which isn't the bulk of the cost of the kit.  I'm attaching the instructions for the traffic lights so you can see how everything connects.  Please let me know if you have any additional questions.  Thank you!