A low air pressure warning signal should activate:

Question

In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.

Accepted Answer

When tank pressure falls below 60 psi.

Answer

When tank pressure falls below 120 psi.

Answer

When tank pressure falls below 10 psi.