When a FMVSS-121 Compliant Tractor-Trailer Is Running Down a Highway

question 57

Multiple Choice

When a FMVSS-121 compliant tractor-trailer is running down a highway and the driver applies the service brakes,which of the following is true at the time of the brake application?

• A) only the service application circuit is charged with air
• B) only the hold-off circuit is charged is charged with air
• C) both service application and hold-off circuits are charged with air
• D) hold-off circuit is exhausted and service application circuit is charged with air

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Definitions:

Merger or Acquisition

The process by which companies combine (merger) or one company purchases another (acquisition) to expand their operations or market share.

Outsourced Function

A task or operation that is performed by external parties rather than by in-house staff.

In-house

Referring to activities or operations that are carried out within an organization by its own members or resources, rather than being outsourced.

Outsourcing Arrangements

Agreements where one company hires an external party to perform services or create goods that traditionally were performed in-house.