Ohh too bad. No, the cylinders were suppose to be trash cans, but run out of time to make them, and forgot to delete them on the build.
The traffic lights control are boxes near the corners. My fault there too. Used the default unity cube to test the script and forgot to even change the material so they look different than the floor.
I would love you try it again if you can :)
If not, thanks anyway for playing.