§ 74.064 OTHER VEHICLES; COLOR, STOP SIGNAL ARM, AND IDENTIFICATION.
   No vehicle other than a school bus shall be identified with the sign "SCHOOL BUS," shall be equipped with a stop signal arm, shall be equipped with a strobe lamp, or shall be equipped with a warning lamp system as described in § 74.065. No commuter van or bus other than a school bus shall be painted national school bus glossy yellow or a color that closely resembles national school bus glossy yellow.
(ILCS Ch. 625, Act 5, § 12-804) Penalty, see § 70.999