I did my best for a few days.
the traffic light is activated, and when touched, it's made to see the back.
But then we found some problems.
1. The traffic lights must be made separately according to the direction of the road.
2. There are too many json files.
I tried to destroy the plug-in, but I want to upload it to Plug-In Discussion and share my ideas with you.

[youtube]http://www.youtube.com/watch?v=xoZ6ng0KOdg[/youtube]