Passenger safety


Passenger safety is measured by the Passenger Safety Indicator (PSI), which incorporates train accident risk data and the weighted number of personal injuries to passengers.

The first element of the PSI, train accident risk data, is taken from the Precursor Indicator Model (PIM). Produced by the Rail Safety and Standards Board (RSSB) every period, the PIM provides a guide to the current train accident risk profile and the trends in this profile. It calculates this using precursor events data from nine main areas (infrastructure operations, signals passed at danger, objects on the line, track, earthworks, signalling, structures, level crossings and train operators failure).

The second element of the PSI is the weighted number (fatalities and weighted injuries (FWI) measure) of personal injuries to passengers, at station level crossings and Network Rail managed stations, as reported in Safety Management Information System (SMIS). This metric is normalised per billion passenger kilometres.


In 2015/16, Network Rail exceeded its target of 1.942, which was a reduction of 10 per cent from 2014/15, to reduce the passenger component of train accident risk, where the risk is within Network Rail’s control. This was partly due to improved risk controls and less challenging external and environmental factors in 2015/16, resulting in a lower number of high risk precursor events.

In the past nine years, there have been no passenger or workforce fatalities as a result of a train derailment or collision. We are today the safest major mixed use railway in Europe and one of the safest in the world.

In 2015/16 there have been 32 Reporting of Injuries, Diseases and Dangerous Occurrences Regulations (RIDDOR) injuries to passengers which is a 25 per cent reduction compared to the previous year. ‘Slips, trips and falls’ both on platforms and escalators are the largest primary causes of accidents at Network Rail managed stations. Our focus continues to be on managing crowd flows and influencing behaviour so that passenger injuries at managed stations are reduced. Improvements to passenger safety at stations throughout the year has been focussed on the passenger train interface, development of strategy and collaborative working with RSSB and industry partners on maintaining focus in key areas of the station.

Passenger safety

Fatalities and Weighted Injuries (FWI) per year0.08920.0761
Personal Injuries to Passengers (RIDDOR)4332
Train Accident Risk Component where Network Rail is the risk controller (FWI)1.8821.776