I'm a bit baffled by these, I thought the accepted wisdom for a closing lane was that you get to the end of it and filter in, rather than stopping and holding up traffic whilst you force yourself into a gap?
Without wanting to start a flame war, it seems like you can be ticketed by any officer who is on the hammer blob on any particular day.
Perhaps I've read them incorrectly or maybe they're just ambiguous to the uninitiated, though.
I suspect that it's down to interpretation.
Hammering it down the outside lane past a queue of traffic and then slamming the indicator and brakes on at the end, is not an example of considerate (or even arguably safe) driving.
Merge in turn causes problems because too many people move over early, leaving a long stretch of lane empty, which others then use as an excuse to fly past the queue as far as possible.
I hope the law is just intended to get people to drive down the outside lane at a more considerate speed, bearing in mind the lane they need to get into is stopped, or barely moving.