About This File
I've tested this on my game, and see in the picture the RHW connects. This is a new working custom traffic light. This was to experiment the possibility of making a bigger intersection for RHW. You should see the icon appear in the Landmarks menu. This goes in the middle of a RHW crossing RHW. It won't plop on top though. The intersections first built, have to be demolished, and then this is placed where it was. Note, the RHW now does not have a grey texture for crossing, until now. dependencies, NAM with RHW is REQUIRED. This was intended for RHW ONLY. Now this is the version with no dependencies. So whats in the picture is not all required, but don't fret, you shouldn't get any boxes.

Supported
