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| Wrong side door openings in D.C.; Go Automation. (1506875) | |
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Wrong side door openings in D.C.; Go Automation. |
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Posted by r17-6599 on Wed Mar 13 13:22:06 2019 The first Metro trains to automatically open their doors in years have been operating on the system over the past two weeks, as Washington, D.C.-based agency conducts testing and calibration before restoring regular use of the auto-doors feature.The automatic door opening feature is part of the original design of the Metrorail system, but its use was discontinued years ago — along with automatic train operations — due to reliability problems and overriding safety priorities. When in automatic-door mode, the train receives data on its exact location from transmitters located on the track. After the train comes to a complete stop and is confirmed to be properly “berthed” at the platform, the doors are automatically opened on the appropriate side of the train. Returning to automatic door operations has two significant benefits. First, it enhances safety by removing the potential for human error resulting in a “wrong side” door opening. Metrorail operators initiate an “open doors” command more than 20,000 times each weekday. While rare, there have been instances where operators have temporarily lost awareness and accidentally opened doors on the wrong side of the train, something that the automatic system prevents. Use of the automatic system also improves the customer experience. Following a series of wrong-side door incidents several years ago, Metro began training operators to pause several seconds prior to opening the doors. The pause was meant as a behavioral safety check to reduce the risk of a mistake. However, for customers, there is now a delay of several seconds between the train arriving at the station and the doors opening. When using the automatic system, doors will open as soon as the train is stopped at the proper location. Train operators will continue to have responsibility for closing doors at all times. From METRO Magazine |
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Re: Wrong side door openings in D.C.; Go Automation. |
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Posted by orange blossom special on Wed Mar 13 13:42:23 2019, in response to Wrong side door openings in D.C.; Go Automation., posted by r17-6599 on Wed Mar 13 13:22:06 2019. So....it's based on elevator technology. |
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Re: Wrong side door openings in D.C.; Go Automation. |
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Posted by Sand Box John on Wed Mar 13 13:49:44 2019, in response to Wrong side door openings in D.C.; Go Automation., posted by r17-6599 on Wed Mar 13 13:22:06 2019. Posted by Union Tpke on this subject from Mon 03 04 12:13:45 2019.John in the sand box of Maryland's eastern shore. |
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Re: Wrong side door openings in D.C.; Go Automation. |
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Posted by randyo on Wed Mar 13 17:07:05 2019, in response to Wrong side door openings in D.C.; Go Automation., posted by r17-6599 on Wed Mar 13 13:22:06 2019. Opening doors o the wrong side even with manual operation can be easily avoided by having sensors on the platform side that only allow the doors to be opened onto a platform. |
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Re: Wrong side door openings in D.C.; Go Automation. |
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Posted by Sand Box John on Wed Mar 13 19:53:34 2019, in response to Re: Wrong side door openings in D.C.; Go Automation., posted by randyo on Wed Mar 13 17:07:05 2019. Opening doors o the wrong side even with manual operation can be easily avoided by having sensors on the platform side that only allow the doors to be opened onto a platform.It cane also be avoided when the on board sub system that prevents it is enabled. Something that has been disabled because it would act stupid and malfunction because of power upgrades that interfered with the train to wayside train berthed at platform command and acknowledgement. John in the sand box of Maryland's eastern shore. |
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