30-03-2015, 01:27 PM
You would need to read articles on error rates induced by repetitive actions. The IRSE and/or IET libraries may be able to help. It is not a simple subject.
The importance to us is remembering no system is foolproof and errors will, and do, happen. By careful design and appreciation of factors outside of our control, we are able to mitigate the effects of these errors. For example:
AWS is a reminder. The driver would already have been following a normal aspect sequence and the AWS should be unnecessary. If you look at the RAIB website, there is a good human factors incident just been reported with Bulleid steam loco Tangmere SPADing a pin and overrunning into pointwork. It was purely an HF issue where the crew's actions were inappropriate, against the rules and an incident occurred (fortunately without injury or damage).
The importance to us is remembering no system is foolproof and errors will, and do, happen. By careful design and appreciation of factors outside of our control, we are able to mitigate the effects of these errors. For example:
AWS is a reminder. The driver would already have been following a normal aspect sequence and the AWS should be unnecessary. If you look at the RAIB website, there is a good human factors incident just been reported with Bulleid steam loco Tangmere SPADing a pin and overrunning into pointwork. It was purely an HF issue where the crew's actions were inappropriate, against the rules and an incident occurred (fortunately without injury or damage).
Le coureur