One anomaly was that the "Sunflower" display in the cab of the Connex train was showing the all-black "clear" indication (meaning that the last signal which had been passed was displaying a green aspect). However the HSE report concluded that the Automatic Warning System (AWS) on both trains was probably working correctly, and that the shock of the collision had caused the electro-mechanical indicator to change. In any case, even if the AWS had given a wrong indication this would not have absolved the driver of the Connex train of his duty to observe and obey the signals.