How often do trains approach a red signals

What is it about?

Railways work hard to understand the reasons why trains sometimes pass signals which are red. This understanding is limited by not knowing how often trains actually approach red signals. Our paper describes how data generated by modern signalling systems can be used to calculate red approach rates and highlights the significant variation in red approach rates between signals.

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Why is it important?

Our work will help with trending data on red signals passed at danger which should improve understanding of these events, both locally and nationally. In future it may also lead to a better understanding of the underlying causes of such events.