(a) Except for size and color, the DANGEROUS placard must be as follows:
(b) In addition to meeting the requirements of §172.519, and appendix B to
this part, the DANGEROUS placard must have a red upper and lower triangle. The
placard center area and [Amdt. 172-29, 41 FR 15996, Apr. 15, 1976, as amended by Amdt.
172-29A, 41 FR 40680, Sept. 20, 1976]