Yes, it's known as a "tri-light". I believe it was also called a "Type-G" in reference to the model name given by General Railway Systems, and I've heard it referred to an NYC (New York Central) style as well. There are a couple variations in Trainz, but GrahamSea's NORAC CL signals are that type and represent by far the most complete and accurate set available. srr89 made some under the name "Signal Target", jjslll54 made one, tri signal USA 04 and seniorchief made one version as well, TRI CPL 6 aspect signal.