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| Preventing SPADs - the Sydney way 23/07/2013 at 07:07 #47486 | |
Jezalenko
25 posts |
Here is one method of preventing "ding ding and away" SPADs. Trains in Sydney, Australia have this indicator at every platform. The indicator shows a blue aspect when a proceed aspect shows on the next signal, and is unlit when a stop aspect is shown at the next signal. Therefore, the guard is not permitted to let the train proceed without a blue signal - hopefully preventing SPADs! 
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