Interesting video of a radio-controlled trucking display at the London Model Engineering Exhibition which was just on (January 20-22). While the attention to detail in the model trucks, cranes, forklifts etc is very good, the unusual part is the realistic road system that they are running on.
You can start this video about 1 minute in to get straight to the traffic lights, although others do also appear in the video.
http://youtu.be/tokKUYLQ_28