Railway safety performance in the European Union
Railway safety performance in the European Union
Railway safety performance in the European Union
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Precursors to accidents<br />
Given <strong>the</strong> fact that accidents on railways are rare, <strong>the</strong> monitor<strong>in</strong>g of less serious events occurr<strong>in</strong>g on railways is an essential<br />
tool <strong>in</strong> a proactive <strong>safety</strong> management system (SMS). ‘Precursors to accidents’ are <strong>in</strong>dicators measur<strong>in</strong>g <strong>in</strong>cidents that under<br />
o<strong>the</strong>r circumstances could have led to an accident. There are <strong>in</strong>dicators for broken rails, track buckles, signals passed at danger,<br />
wrong-side signall<strong>in</strong>g failures, broken wheels and broken axles (Figure 7). Over <strong>the</strong> period 2007–2009, Member States reported<br />
as many as 4.5 precursors per one significant accident. This gives an impression of <strong>the</strong> learn<strong>in</strong>g potential <strong>in</strong> monitor<strong>in</strong>g <strong>the</strong>m.<br />
The reported number of track buckles shows substantial variations over time and it seems impossible to determ<strong>in</strong>e any<br />
underly<strong>in</strong>g patterns for groups of countries. As a matter of fact, developments observed at country level vary greatly.<br />
Unusual wea<strong>the</strong>r conditions give a natural variation <strong>in</strong> <strong>the</strong> number of track buckles. The use of data quality control has,<br />
however, revealed that <strong>the</strong> observed variation <strong>in</strong> some Member States is <strong>the</strong> result of changes <strong>in</strong> report<strong>in</strong>g practice.<br />
The number of broken rails is also sensitive to <strong>the</strong> wea<strong>the</strong>r conditions and may not fully reflect <strong>the</strong> quality of work done<br />
by IMs. The <strong>in</strong>cidence of broken rails decreased substantially <strong>in</strong> 2009, but this fall most likely reflects drops <strong>in</strong> <strong>the</strong> number<br />
of broken rails registered <strong>in</strong> <strong>in</strong>dividual countries such as Poland (from 2 396 <strong>in</strong> 2008 to 1 506 <strong>in</strong> 2009) and Hungary (from<br />
716 <strong>in</strong> 2008 to 10 <strong>in</strong> 2009). S<strong>in</strong>ce 2009, Poland has only reported broken rails caus<strong>in</strong>g a disruption to railway traffic.<br />
Figure 7: Accident precursors <strong>in</strong> all countries and <strong>in</strong> <strong>the</strong> subsets of countries (2007–2009) ( 5 )<br />
6 000<br />
HU, IT, LT<br />
5 000<br />
4 000<br />
DE, LT, PL<br />
3 000<br />
EE, IT, LT<br />
2 000<br />
LT, UK<br />
1 000<br />
0<br />
Broken rails Track buckles Wrong side<br />
signall<strong>in</strong>g<br />
failures<br />
Signals passed<br />
at danger<br />
Broken wheels<br />
Broken axles<br />
• 2007 • 2008 • 2009<br />
( 5 ) Besides exclud<strong>in</strong>g some countries due to changes <strong>in</strong> def<strong>in</strong>itions, Austria is not <strong>in</strong>cluded <strong>in</strong> <strong>the</strong> dataset for broken rails and Greece for track buckles, as <strong>the</strong>y did not<br />
report relevant data for <strong>the</strong> entire period.<br />
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