Division 6.2.4 Secondary braking system United Kingdom Original text. Later amendments are not shown. 6.2.4.1Division 6.2.4.1 6.2.4.2Division 6.2.4.2 6.2.4.3Division 6.2.4.3 ← Division 6.2.3.3.2 Division 6.2.4 Division 6.2.4.1 →