When a FMVSS-121 Compliant Tractor-Trailer Combination Is Moving Down the Highway

question 2

Multiple Choice

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

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Definitions:

Greater

A term used to describe something that is larger or more in quantity when compared to another entity.

Skin Lesion

A part of the skin that has an abnormal growth or appearance compared to the skin around it.

Tumor

A growth of tissue that develops due to cells dividing excessively or failing to die when expected, resulting in an irregular mass.

Remains the Same

A phrase indicating that a situation or condition persists without change over a period of time.