Systemic failure, not just human error
The LZB protection system failed, and control apparently authorised trains to proceed at line speed instead of the slow line-of-sight fallback. Many see normalised deviance, underfunded maintenance and a weak investigation culture compared with aviation.
Why no automatic collision avoidance?
Commenters ask why 1D rail lacks TCAS-like protection. Others reply that ATP systems exist but are often rejected on cost grounds, and that stopping distances mean trains depend on external signalling.
Trains remain relatively safe
Some argue rail is still far safer than cars per km. Others counter that aviation is safer per passenger-km and that passengers deserve near-zero risk regardless.