Indiana Administrative Code
Title 575 - STATE SCHOOL BUS COMMITTEE
Article 1 - MINIMUM SPECIFICATIONS FOR SCHOOL BUSES
Rule 9 - Type A, Type B, Type C, and Type D School Buses
Section 9-24 - Electrical system
Current through March 20, 2024
Authority: IC 20-27-3-4
Affected: IC 20-27-9
Sec. 24.
(a) For Type A school buses, the alternator and rectifier must have a minimum output capacity of one hundred forty (140) amperes.
(b) For Type B school buses, the alternator and rectifier must have a minimum output capacity of two hundred (200) amperes. A single belt drive is permissible.
(c) For Type C school buses, the alternator with a rectifier must have a minimum output capacity of two hundred (200) amperes. The alternator must:
(d) For Type D school buses, the alternator with a rectifier must have a minimum output capacity of two hundred (200) amperes. The alternator must:
The dual belt drive or an approved equivalent must be used with the alternator. The voltage regulator must be compatible with the alternator.
(e) Tor Type A school buses, batteries installed must be per manufacturer standard.
(f) For Type B, Type C, and Type D school buses, each battery must be conventional (lead-antimony) or maintenance-free sealed (lead-calcium). Each battery system must be twelve (12) volt and have a minimum rating of 1100 CCA (cold cranking amperes) at zero (0) degrees Fahrenheit. If the battery is mounted outside of the engine compartment, it may be temporarily mounted to the chassis. One-piece battery cables of sufficient length to service batteries when mounted in a battery box must be used.
(g) Subsections (a) through (f) do not apply to buses without alternators.
(h) All electrical standards must be in accordance with the most current and appropriate Society of Automotive Engineers standard.
(i) The chassis may have the following instruments and gauges:
(j) All instruments must be easily accessible for maintenance and repair. The following instruments must be installed in rear-engine units:
The rear-engine starter switch must not be activated when the transmission is engaged. The instrument panel must have lamps of sufficient candlepower to illuminate all instruments and gauges.
(k) All wiring must conform to the current standards of the Society of Automotive Engineers and to the manufacturer's standards. The chassis manufacturer must install a terminal strip or plug either on the body side of the cowl or in an accessible location in the engine compartment of a bus without a cowl that contains the following body connection terminals:
(l) The ignition switch must be located either on the:
(m) An electrical or mechanical tachometer/tachograph may be used.