Post by Deleted on Jun 25, 2013 14:21:37 GMT
"The fast lines north of Harrow, including all the lines north of Rickmansworth, are signalled with standard four-aspect Network Rail signal heads using standard LUL signalling.[36] The upper two lights are a standard two-aspect LUL stop signal, displaying either a single green or single red aspect. The lower two lights are a standard LUL repeater signal for the next stop signal ahead, showing either a single green or single yellow aspect. The repeater indication is suppressed when the stop signal shows a red aspect. Thus the signal is two signals combined, giving the train driver a three-aspect signal. The danger indication is a single red light; the caution indication (that is the next stop signal shows danger) is a yellow light with a green light above it and the clear indication is two green lights."
From the Wikipedia Metropolitan line page. I know it's done with the best of intentions but seriously, a bit more research wouldn't go amiss (visiting somewhere like Ricky and observing the starters perhaps?). Anyone spotted any other tube related fiction on Wikipedia?
From the Wikipedia Metropolitan line page. I know it's done with the best of intentions but seriously, a bit more research wouldn't go amiss (visiting somewhere like Ricky and observing the starters perhaps?). Anyone spotted any other tube related fiction on Wikipedia?
