When a FMVSS-121 compliant tractor-trailer combination is moving down the highway at a speed of 50 mph,which of the following circuits MUST be charged with air?
A) service brake circuit
B) primary circuit
C) secondary circuit
D) hold-off circuit
Correct Answer:
Verified
Q12: Which of the following are function(s)of slack
Q13: In what year was FMVSS 121 introduced?
A)
Q14: What legislation mandates every required standard of
Q15: How is the relay (secondary)section of an
Q16: What is the function of a quick-release
Q18: Which of the following service application valves
Q19: Which of the following best describes the
Q20: Which valves on a current FMVSS-121 compliant
Q21: A system air pressure loss occurs on
Q22: What is the potential energy of an
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