(a) Nothing contained in this chapter shall be construed to prohibit the use of additional equipment and accessories, not inconsistent with or prohibited by this chapter, provided such equipment and accessories do not decrease the safety of operation of the motor vehicles on which they are used.
(b) Compliance with this chapter does not relieve the obligation to comply with other chapters of Titles 21 and 29; however, if a conflict occurs, the state or federal regulation herein adopted which promotes the greater degree of safety shall control.