Talking about traffic lights at the R/As - actually, this was a a good move - cos having to rely on the goodwill of other drivers to give way to let anyone pass is almost non-existent.

And so, it's like, if they can't treat other drivers with common courtesy, then we'll just have to put up traffic signals. Even these are not abided by many a time but better than before and in time, maybe the drivers will learn how to drive and let drive. :P

Another thing is that Decoration R/A (and other similar ones) with the slip road on the right for the right turnoffs, helped to ease the traffic congestion quite a bit. That was good planning.