<i>re edit:</i> TL;DR: Unable. This is the usual pitfall when troubleshooting a highly reliable system: <i>any</i> uncaught exception is going to be an outlier, almost by definition.<p>Given the millions of km travelled, one collision in 2 years on the whole continent means &quot;insufficient data to draw conclusions.&quot; The only thing that follows is &quot;can&#x27;t generalize from that.&quot; Whether it&#x27;s a lot or not is <i>completely essential</i> to drawing generalizations: with 5 data points (which I have honestly picked out of Wikipedia under the assumption that such an event is unlikely <i>not</i> to be mentioned - that&#x27;s a lot of filters right there), what you&#x27;re saying is equivalent to &quot;there has now been a single confirmed death by meteorite; let&#x27;s generalize!&quot;<p>(Tangent follows:
Europe (or even the EU) does not have a homogeneous rail network, with the same standards kept everywhere: each country keeps its own set (albeit loosely compatible) of standards and its own overseeing agency; that translates to very different quality of track, service, security etc. The only thing that&#x27;s common is &quot;the overwhelming majority of track is of the 1435 mm gauge&quot; - there are even countries with four(!) different electric power systems on the same network. (Also translates to a <i>certification</i> nightmare for cross-border trains.)<p>Moreover, there are various levels of rail: there&#x27;s the (sparse) TEN-T backbone, national major routes, regional networks, and local lines; although those are interconnected, there are varying levels of safeties, from the (interoperable) ETCS, through various local (automated and semi-automated) block signalling, PTT radio dispatching and manual signal operation, all the way down to 1890s-style train handover by telephone signalling. (No idea which of these is used on this specific line.)
)