92 Ill. Adm. Code 441.30
Standards of Construction
Section 441
Section 441.30 Standards of
Construction
a) "Shall" and "must" are used in the
imperative sense. "Shall" imposes an obligation to act.
"Must" defines a condition that is to be satisfied. "May"
allows permissiveness under terms specified in the standards. "Will"
indicates intention, promise or willingness.
b) Words imparting the masculine gender include the feminine.
c) Changes in the administration of the state school bus
inspection program and changes to federal and state law have caused the
purchase or manufacture date of school buses to be critical in the application
of this Part. The effective dates for some of these standards will vary.
1) Exemptions to some standards are provided for school buses
purchased prior to September 1974, the effective date of the Department's
"Vehicle Inspection Stations Governing School Buses."
2) Exemptions to some standards are provided for school buses
manufactured prior to March 1977, the date of the Department's Order
"Minimum Safety Standards for Construction of Type I School Buses."
3) Some standards are identified with other effective dates.
These standards are applicable to all school buses manufactured or purchased
after the identified date or during the time frame specified.