The Direct Causes Corrected
The TTC acted quickly following the accident to repair the defective modified Ericsson train stops. They also began requiring drivers to traverse grade-timing sections at a speed that would allow them to actually see the red signal change before they left the section.
In 1997 and 1998, the behaviour of the signals themselves was changed. Now, when a signal is red (or double red) only because of grade timing, the (top) red light flashes during the last few seconds before it clears. The trip arm remains up during this phase, but the flashing red confirms to the driver that there was a lunar white on entry to the section and that the signal can be expected to clear at any moment. Jeffrey's mistaken interpretation of the red signal SP71 would no longer be possible.
Read more about this topic: 1995 Russell Hill Subway Accident
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