Question:
The low air pressure warning signal indicates _________.
A
A low air warning could signal any or all of these things.
explanation
A low air-pressure warning signal is required on vehicles with air brakes. A warning signal you can see must come on before the air pressure in the tanks falls below 60 psi (or one-half the compressor governor cutout pressure on older vehicles). The warning is usually a red light. A buzzer also may come on.
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