67 Pa. Code § 449.3
The provisions of this §449.3 issued under The Administrative Code of 1929 (71 P. S. §§ 511.3, 512 and 513); and act of June 1, 1956 (P. L. (1955) 1944, No. 655) (72 P. S. §§ 2615.1-2615.10); amended under the Vehicle Code, 75 Pa.C.S. §§ 6103 and 9511; and the act of June 1, 1956 (P. L. (1955) 1944, No. 655) (72 P. S. §§ 2615.1-2615.10).