Nothing in this subchapter shall be construed to prohibit the
use of additional equipment and accessories, not inconsistent with or
prohibited by this subchapter, provided such equipment and accessories do not
decrease the safety of operation of the commercial motor vehicles on which they
are used.
[53 FR 18052, May 19, 1988, as amended at 60 FR 38744, July 28,
1995; 65 FR 35296, June 2, 2000]