NSW Single Light Signal | 3A 2-Route L/R + Theater + Turnout Indicator
3-aspect signal with 2 routes and theater indicator for left or right branching routes. Turnout indicator for advanced warning of the next junction ahead.
Used to protect a junction as well as provide advanced warning of the next diverge signal along the route.
The signal uses 4 routes, the first two are the junction protected by this signal. The last two should use the | symbol and will display in the turnout indicator.