B604 4 Light Signal Red/Green/2 X Yellow Standard Square Head Brand_Atlas On a model railway

On a model railway

when the new slimmer signals became standard although this replacement programme began around 2000

Come along on a safari adventure

Design and construction followed on from the universal and ubiquitous Mk1 family of coaching stock

CHAIN LENGTH 25mm

B604 4 Light Signal Red/Green/2 X Yellow Standard Square Head Brand_Atlas On a model railway4 light signal red green 2yellow standard square head This 4 aspect signal is placed at the side of the track. A red light indicates stop, a double yellow light indicates caution the next signal is yellow and at caution, a single yellow light indicates caution the next light is red and Green indicates permission to proceed or route clear. . It is suitable for any layout based from around 1970 onwards, when this style of signal head came into use.