The result of RMT's ballot on OSN101 will be out today, and we can expect a Yes vote, immediately followed by an official boycott of the newly-imposed unsafe procedures for drivers. This will provide protection for drivers refusing to put our safety (and ours and our workmates' jobs) at risk.
It is really important that we beat back this attempt to water down the processes that protect us at work. So we can only speculate as to why ASLEF appear to be going along with these dangerous moves rather than joining with RMT in resisting them.
'Action short' like this can be even harder to organise than a strike, as we all need the information and confidence to refuse to do what we're told. So we hope RMT gets clear information and support out round every depot.
Think about it: you might feel nervous about refusing a new procedure, but you'll feel much more nervous if you go along with it and injure a passnger (or worse).