Final answer:
Threshold braking is an emergency braking technique that involves applying the brakes until they lock and then releasing them rapidly to maintain control of the vehicle.
Step-by-step explanation:
The emergency braking technique described in the question is known as threshold braking. This technique involves applying the brakes gradually until they lock, and then releasing them in rapid succession to prevent the wheels from completely locking up. This helps maintain control of the vehicle while still allowing for maximum braking force.
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