Air Brakes and Vacuum brakes.
Vacuum brakes were phased out in the 90s. Before that most rolling stock (passenger coaches and freight wagons) were vacuum braked and locos had vacuum brakes too.
Air...
more... braked rakes started coming up in the 90s and locos were fitted with both types of brakes then. Once vacuum brakes were phased out, the related equipment was removed from most locos.