67 Pa. Code § 171.47
The requirements for the color of school bus bodies are as follows:
(4) If a school bus is equipped with reflective material, other than that required under § § 171.50 and 171.59 (relating to doors and emergency exits; and lamps and signals), the reflective material shall be of automotive engineering grade or better. If additional reflective materials and markings are used, they may be applied as follows:



The provisions of this § 171.47 amended under the Vehicle Code, 75 Pa.C.S. § § 4103, 4551—4553 and 6103.
The provisions of this § 171.47 adopted August 19, 1983, effective August 20, 1983, 13 Pa.B. 2561; readopted December 4, 1987, effective December 5, 1987, 17 Pa.B. 5052; amended September 13, 1996, effective September 14, 1996, 26 Pa.B. 4411; amended November 26, 2003, effective November 29, 2003, 33 Pa.B. 5817; amended May 20, 2005, effective May 21, 2005, 35 Pa.B. 3039. Immediately preceding text appears at serial pages (301818) to (301820).