Signals installed in Western Australia during the 1980s utilised incandescent bulbs to display indications to drivers. In WA, target boards were introduced to enhance the visibility of signals for approaching vehicles. These boards were entirely black with a white border around the edges, improving the visibility of the signal heads against dark backdrops. The design of these target boards included the white border on both sides, allowing signals to be mounted on either side without requiring a separate target board for each lantern. Signal posts are usually painted safety yellow.
This page concentrates on signals and related equipment released between 1980 and 1989 and used within WA. All the signals on this page have been replaced with modern equipment.