Section 575IAC1-9-56. Noise suppression switch

   (a) All school buses manufactured after January 1, 2006, must be equipped with an on/off type switch designed to disable interior noise-producing accessories, such as:

(1) windshield and window defroster fans;

(2) driver and passenger heater fans;

(3) circulation fans;

(4) powered roof ventilators;

(5) air conditioning systems; and

(6) radios, not including two-way radio systems or radio speakers.

Identification must be provided on or adjacent to the switch in order to clearly state its purpose and distinguish it from other controls. The switch must be accessible to the driver when in a seated position.

  (b) For Type A buses with cutaway front section chassis and with bodies manufactured by a company other than the manufacturer of the chassis, the original equipment accessories, except radios (two-way, AM/FM, satellite, or other auditory type devices), provided by the chassis manufacturer are exempt from the requirements of this section. (State School Bus Committee; 575 IAC 1-9-56; filed Aug 15, 2014, 10:20 a.m.: 20140910-IR-575130244FRA)