Pic of final product. Everything including timers was built from scratch. Using a slot car race track I was able to build a PLC driven simulator. With a flip of a switch, drag race from point A to B or complete 5 laps to see who's the quickest. Tree light for each lane to indicate who won or who was disqualified for leaving to soon. I'm currently working on a 8051 microcontroller version. I will post when complete. This project was my capstone project at ITT Tech. Thanks for viewing.