Final answer:
An emergency forces you to stop your tanker quickly or crash. You should option 3. use controlled or stab braking
Step-by-step explanation:
When you need to stop your tanker quickly to avoid crashing, it is best to use controlled or stab braking. This involves applying the brakes firmly but gradually, rather than locking the brakes or using only the emergency brakes.
Locking the brakes with the pedal and holding it there can cause the wheels to skid, resulting in a loss of control and potentially causing the tanker to slide or jackknife. Similarly, using only the emergency brakes can lead to a sudden and abrupt stop, which can be dangerous and cause the tanker to lose stability.
Controlled or stab braking allows you to maintain control of the tanker while still bringing it to a stop quickly. By gradually applying the brakes, you can achieve maximum deceleration without causing the wheels to skid. This technique also allows the weight of the vehicle to shift forward, providing increased traction to the front wheels and improving stopping power. The correct answer is option 3. use controlled or stab braking