Eliminating the potential for errors like this is normally common practice, but much of Calcutta's tram system is now very old. Nevertheless, this accident should raise concerns about many human factors issues including task design, training and competence and procedural controls as well as risk management.
When a driver left his tram to investigate a problem with the power supply, an unfortunate error led to considerable damage. The driver had left the tram in 'on' mode, so when the power problem disappeared the now driverless tram set off on its own. To see the full story, read the story on the Rush Lane and the Times of India's websites.
Eliminating the potential for errors like this is normally common practice, but much of Calcutta's tram system is now very old. Nevertheless, this accident should raise concerns about many human factors issues including task design, training and competence and procedural controls as well as risk management.
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Human errors often have humorous rather than safety critical consequences. The two examples here illustrate system failures which caused embarrassment for the organisations involved, but probably nothing more. In the top example, a sub-contractor working on street repairs after gas main works made the road marking error. Instead of marking the temporary space as 'DISABLED', a rather different marking was made. The operator was probably doing the best they could - the real failure is in the system that allowed the error to occur. See the KentOnline news report for the full story. In this second example, road painters repeated a spelling error that was first introduced on the section of road two years previously. Here, 'MINUTES' was replaced with 'MINUITES'. Again, the error lies in the system somewhere, not with the individual carrying out the marking. For the full story, see BT.com. Great to see (and travel on) Edinburgh's Trams with passengers on board. Well done to everyone involved! See the BBC's coverage of the first day of operations here. |
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