Quick update on my traffic light project. Still have the stray-left and stray-right sensors to mount (will need to fabricate the mounts), the reverse alarm to wire and install, the light to hang on the wall and final system regression testing. Too tired to press ahead tonight, so I decided to make a quick little fun-video instead. For those keeping close track, when I was demonstrating the vehicle entering the garage, I stated something like “break the green light sensor” … of course what I meant was that I broke the beam emitted by the green light sensor. Same for the yellow. I was tired. 
Post time: Jun-19-2017