A. A commercial motor vehicle that operates in this state shall have an exhaust system that is detectable by a visual inspection and that meets all of the following:

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Terms Used In Arizona Laws 28-955.04

  • Commercial motor vehicle: means a motor vehicle or combination of vehicles that is designed, used or maintained to transport passengers or property in the furtherance of a commercial enterprise, that is a commercial motor vehicle as defined in section 28-5201 and that is not exempt from gross weight fees as prescribed in section 28-5432, subsection B. See Arizona Laws 28-601
  • Person: includes a corporation, company, partnership, firm, association or society, as well as a natural person. See Arizona Laws 1-215
  • State: means a state of the United States and the District of Columbia. See Arizona Laws 28-101

1. Is free from a defect that adversely affects sound reduction.

2. Is equipped with either a muffler or other noise dissipative device.

3. Is not equipped with a cutout, bypass or similar device.

B. A person who violates this section is subject to a civil penalty of at least five hundred dollars. If the person shows the court that a muffler has been installed or the existing muffler has been serviced to comply with subsection A, the court may reduce or waive the civil penalty.

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