**Summary:** With the use of a 555 Timer, counter, JK-flip flops and logic gates, a traffic light intersection was created based on assigned values for the times in which each corresponding light should be on. Here is a picture of my fully functional project that replicates a traffic light intersection: {{:start:classes:principlesofdesign:frank_longueira:img_3519.jpg?800x550|}} Here is a link to the video that shows the circuit working: http://www.youtube.com/watch?v=_7B1ee5FIHA Here is the circuit schematic: {{:start:classes:principlesofdesign:frank_longueira:traffic_light_schematic.png|}}