Tests showed no signalling equipment faults and the report was able to dismiss the possibility that the signalman had only changed the route after the Perth train had passed the distant signal at caution. The driver of the Perth train had not slowed his train in response to this signal and had then passed two danger signals before colliding with the Tring train. All the evidence suggested that the driver had made no attempt to stop until the very last moment: Eyewitnesses on board the Perth train reported that an emergency brake application was made a few seconds before the collision.