2024 WI CDL Practice Test: Tank - Test
Based on
2024 WI CDL Handbook
4. A trailer air supply that is in good working condition will pop out when the air pressure falls into what range?
A
20 to 45 psi.
B
5 to 20 psi.
C
20 to 60 psi.
D
10 to 30 psi.