“The wrong kind of leaves” has become one of the railway’s most frequently mocked excuses—but leaves on the line create a genuine and potentially serious safety problem.

In this episode of Signals to Danger, we explore how fallen leaves are transformed into a stubborn layer of contamination on the railhead, why that can leave trains struggling to accelerate or stop, and how it can interfere with the systems used to detect where trains are.

We also look at the railway’s multilayered response, including autumn planning, vegetation management, railhead treatment trains, Sandite, traction-gel applicators, onboard sanding, defensive driving and seasonal timetables.

Finally, three incidents at Stonegate, Esher and Salisbury Tunnel Junction demonstrate how low adhesion can escalate from a missed station to signals passed at danger—and ultimately to a collision.

OPENING CREDITS

Music track: Epic Motivation by Aylex

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END CREDITS

Music track: Saved by Brothers by Aylex

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Signals to Danger is a UK railway history and safety podcast exploring rail accidents, incidents and the investigations that followed them. From historic railway disasters to modern rail safety and current events, each episode looks beyond what happened to understand why it happened, what was learned and how those lessons continue to shape the railway today.

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