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Post by retep on Apr 30, 2011 11:53:37 GMT
I've heard the 2009 stock have them and in one vid i watched on youtube the doors on the train closed at different times.
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Post by Deleted on Apr 30, 2011 12:15:35 GMT
If a closing door hits an obstruction, it re-opens (I think!).
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Post by blackhorsesteve on Apr 30, 2011 12:44:55 GMT
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Post by subwayrail on Apr 30, 2011 13:28:59 GMT
I've heard the 2009 stock have them and in one vid i watched on youtube the doors on the train closed at different times. There are actually two separate door protection systems at work on the 09 stock. What you see in the video is the obstacle detection system, which partially re-opens the affected doors if a sizeable object, in this case a passenger, prevents them from closing. The doors will partially re-open and close up to three times before sticking at the obstructed position. Sensitive edge is a completely different system which kicks in only after the doors have closed. A special strip detects the presence of thin objects, e.g. clothing and bag straps. Such objects are typically detected when the passenger tries to pull them free. Within platform limits the train will not move if stationary, or the brakes will apply if in motion. |
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Post by Deleted on Apr 30, 2011 14:40:29 GMT
I've heard the 2009 stock have them and in one vid i watched on youtube the doors on the train closed at different times. There are actually two separate door protection systems at work on the 09 stock. What you see in the video is the obstacle detection system, which partially re-opens the affected doors if a sizeable object, in this case a passenger, prevents them from closing. The doors will partially re-open and close up to three times before sticking at the obstructed position. Sensitive edge is a completely different system which kicks in only after the doors have closed. A special strip detects the presence of thin objects, e.g. clothing and bag straps. Such objects are typically detected when the passenger tries to pull them free. Within platform limits the train will not move if stationary, or the brakes will apply if in motion. What happens in the video doesn't seem [to me] to be the obstacle detection system at work... The Train Operator seems to have stopped the door-closing process twice - first at 0:15, then at 0:19. On the third attempt, it looks like all the doors in the rear 5 cars closed first [when the chime was still sounding] before the ones in the front 3 did [after the chimes, as per usual]. Is there a reason for this? |
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Post by retep on Apr 30, 2011 18:06:45 GMT
Then i'm thankful for over sensitive doors, the dissapointing thing is that the incident happened on one of LU's modern stock |
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Post by retep on Apr 30, 2011 18:13:13 GMT
Then i'm thankful for over sensitive doors, the dissapointing thing is that the incident happened on one of LU's modern stock common incidents have happened before on the tube as i've read from the article 1993 at Hounslow East. Elderly woman killed as she was dragged by the departing train with her coat caught in the doors. 1994 at Ealing Common. 73 year old man dragged along the platform as the train departed with his walking stick caught in the doors. 1997 at Holborn. 11 year old boy killed as he was dragged along the platform and into the tunnel with the toggle of his anorak trapped in the doors. Judging from the station it seems to be with pre-refurbished 1973 stock judging by the stations. |
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Post by Deleted on Apr 30, 2011 18:18:04 GMT
Interesting that you shound say that. Another incident was on the eastbound at Eastcote some years ago (date eludes me at the moment) and that was a 1973 and not a Met. It was the following Met that discovered what had happened.
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