About Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety: which statement is WRONG?
The hazard lights go on when you come to a stop in the jam and go OFF again once the vehicles behind have slowed or noticed — not for the whole jam.
The book only requires that you make room for emergency services when there is no hard shoulder; a fixed left/right formation is not part of this teaching material.
In a breakdown you do get out: on the right, wearing a safety vest, waiting behind the crash barrier. 'Stay in the car' applies to stationary traffic-jam traffic, not to a breakdown on or next to the hard shoulder.
In a long traffic jam you may briefly get out to see what is going on.
Explanation
trap: curiosity over safety. VekaBest p.167 - in the jam you stay in the car; you follow traffic information via the radio/navigation, not by getting out