The SCS is entirely mechanical and only costs about a third of the price of ABS.
The hydraulic control units are driven by belts from the front drive shafts and use inertia sensors to calculate deceleration rates.
The control units incorporate simple plunger pumps to enable brake pressure to be reapplied once the wheel has been prevented from locking.
One of the most unnerving things that can happen in motoring is that you brake and one or more of...