Before you start the test, please answer the question below regarding your insurance status.
Without insurance you will not be able to drive in Ohio
Do you currently have car insurance?
A low air pressure warning signal should activate:
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.