Variable delay traffic light control box

My brother in law found a traffic light on the side of the road and asked me to make a control box for it. I housed an Arduino UNO and a 4-channel relay board in an outdoor electrical box and included a potentiometer for adjusting delay time from between 1 and 15 seconds. The sequence starts at the upper right outlet then to the upper left ending with the lower left before repeating. The lower right outlet is not wired.

finished lane.jpg

lane potent.jpg

lane full.jpg

full lane.jpg