How does the railway find a crack hidden inside a solid steel rail—and what happens when it does?

In this Rail Safety Review, we explore how rails become damaged, the development of metal fatigue and rolling-contact fatigue, and the overlapping safeguards used to prevent defects becoming broken rails.

From visual inspections and reports of rough riding to ultrasonic testing, Network Rail’s measurement trains and the Flying Banana, we follow a defect from detection and assessment through to monitoring, grinding or complete rail replacement.

There’s also a review of the latest rail safety news, including developments following the derailments at Lewes and Wickford, the fatal level-crossing collision near Burscough and the RAIB’s safety digest concerning equipment left on the railway at Queen’s Park.

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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.

Hosted on Acast. See acast.com/privacy for more information.

On the evening of 5 November 1967, a packed passenger train was making an otherwise ordinary journey from Hastings towards London Charing Cross when, on the approach to Hither Green, its third coach suddenly derailed at around 70 mph.

What followed became one of Britain's deadliest post-war railway accidents. Coaches overturned, the train was scattered across more than half a kilometre of railway and 49 lost their lives.

In this episode of Signals to Danger, we reconstruct the Hither Green disaster and ask a deceptively simple question: why do trains derail?

From wheel and rail dynamics to suspension, track condition and obstructions, we explore the different ways a train can leave the rails before following investigators to the small fatigue crack which ultimately revealed what had gone wrong at Hither Green — and the changes to rail inspection and infrastructure which followed.

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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.

Hosted on Acast. See acast.com/privacy for more information.

On 14 August 2026, a London-bound passenger train derailed while approaching Wickford in Essex, with its rearmost vehicle travelling for around 1.5 miles while derailed before the train came to a stand.

In this Flash Briefing, we look at the first information released by the Rail Accident Investigation Branch (RAIB), including the driver's report of a kink in the track, evidence of a track misalignment, the sequence of events as the train approached Wickford and the damage caused during the derailment.

We also look ahead to the RAIB investigation, which will consider the condition and maintenance of the track, the effectiveness of measures intended to manage the risks of operating trains during hot weather, and the performance of the Class 720 train during the derailment.

OPENING CREDITS

Music track: Epic Motivation by Aylex

Source: https://freetouse.com/music

Free To Use Music for Video

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.

Hosted on Acast. See acast.com/privacy for more information.