There was an occasion where a SMRT train was delayed as the platform door cannot open. It was described as a "signal problem". This occured with the Downtown line, which was a new line.
We do not know if all the doors cannot open, or it only affects some doors.
If all the doors cannot open, the proper procedure is to proceed to the next station. It does inconvenience the passengers who wish to alight or board at the "faulty station" but it should not cause the whole line to be held up.
A better design is to have each door open individually, if the cabin is at the door. This is a local sensor. It is similar to the door of an elevator.
If some doors cannot open due to a faulty sensor, it should not affect the other doors of the train. The passengers can move to the doors that are operating properly.
It would be a bad design if the opening of the platform and train doors are controlled centrally. It is better for it to be controlled by local sensors.
I do not have information about the actual situation. Can someone enlighten me?
Tan Kin Lian
We do not know if all the doors cannot open, or it only affects some doors.
If all the doors cannot open, the proper procedure is to proceed to the next station. It does inconvenience the passengers who wish to alight or board at the "faulty station" but it should not cause the whole line to be held up.
A better design is to have each door open individually, if the cabin is at the door. This is a local sensor. It is similar to the door of an elevator.
If some doors cannot open due to a faulty sensor, it should not affect the other doors of the train. The passengers can move to the doors that are operating properly.
It would be a bad design if the opening of the platform and train doors are controlled centrally. It is better for it to be controlled by local sensors.
I do not have information about the actual situation. Can someone enlighten me?
Tan Kin Lian
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