Final answer:
Controlled braking maintains wheel rotation and steering control by preventing the wheels from locking, while stab braking includes intentionally locking the wheels for short periods.
Step-by-step explanation:
The difference between controlled braking and stab braking is that controlled braking does not lock the wheels while stab braking involves locking the wheels. Controlled braking, as the name suggests, is a more regulated approach where the driver applies the brakes in a manner that keeps the wheels from locking, maintaining the ability to steer while slowing down. In contrast, stab braking involves applying the brakes as hard as possible to the point of wheel lock-up, then releasing them when they lock, and reapplying after the wheels start rolling again. It is important to note that stab braking is generally not recommended with anti-lock braking systems (ABS), which are designed to maintain control during sudden stops without wheel lock-up.