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If the trailer has no spring brakes, what would happen if you drive away?

1) The trailer brakes would not work
2) The trailer brakes would work
3) The trailer would not move
4) The trailer would move but with reduced braking power

Answer :

Final answer:

Without spring brakes, a trailer's brakes would not work correctly, and the service brakes could fail due to air pressure leaks. Spring brakes are critical for parking and emergency braking, and their absence can pose significant risks. Option 1) The trailer brakes would not work is correct.

Explanation:

If a trailer does not have spring brakes and you drive away, the trailer brakes would not work effectively. Spring brakes are used in air-braked systems, commonly on trailers, as a parking brake and for emergency braking.

Without spring brakes, there is a risk that the air pressure could eventually leak out of the system, which means that the service brakes could fail. When air pressure leaks, the absence of the parking or emergency brake function means the trailer could move unexpectedly.

Spring brakes are designed to apply themselves automatically if the air pressure in the system drops below a certain level. Without spring brakes, the force applied to the brakes would first have to overcome the compression of any air in the lines, leading to reduced braking efficiency.

Therefore, in order for the brakes to work properly, any air in the brake lines must be bled out, as air is compressible and can impair the immediate transfer of force to the brakes.

Option 1) The trailer brakes would not work is correct.

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