I ask the following of any railway employees reading this. Talking not of generalities, but of this actual incident, after what time should passengers have been allowed off the train?
Given what I know about the incident, and how close the train was to the platform at Lewisham, I would suggest a that roughly an hour is the maximum length of time the train should have been stopped before a controlled evacuation was attempted. After approximately 30 minutes it would be wise to start the
preparations for an evacuation - i.e. notification to the emergency services and any local staff that may be able to assist (including station staff).
Easy to have these rules and/or guidelines though and far more difficult to enforce them rigidly. Even controlled evacuations are not without hazards and takes a long while to complete if you have several hundred people to get off. Stuving makes some sensible suggestions in his earlier post.
This event at Lewisham it has also be born in mind the conditions at the time. The whole day it had been a struggle to get and keep trains moving due to iced conrail, to have stopped every train in the area discharge the all the conrail in a much wider area; rules are there must be a whole electrical section discharged on all lines either side of the electrical section effected' this 5 to 10 route miles. By stopping all trains in the area could have lead to a bigger problem.
The mistake I believe was actually to attempt to run trains at all given the conditions, however
NR» and the ToC would have been slated for taking that decision; from what I understand if such conditions happen again next year it is possible the decision will be taken to suspend the service, although it is accepted these conditions are a once in 20 / 30 years