5.9K views · 240 reactions |  We talk a lot about signals but what are they and how do they keep the railway running❓  Signals tell train drivers when it's safe to go and what routes their trains will take.  Watch for more ... #DelaysExplained #Signalling | Network Rail | Facebook

6K views · 804 reactions | This set of vintage railway signal lights now resides at the newest Toronto Public Library branch in the Junction Triangle as a tribute to the area’s rich transit history. | Metrolinx | Facebook

Stop!!! The iconic beauty of the semaphore railway signal. Becoming very rare on the main rail network, but still found working on heritage rail lines. Also, no model railway is complete without them!!#uktrainspotting #trains #diesellocomotive #britishrailways #railway #railways #trainspotting #railroad #modelrailway | Adrian Watson