§ 39-21-27 — Special lighting and warning equipment on schoolbuses

1. The superintendent of public instruction, in cooperation with the director, is authorized
to adopt standards and specifications applicable to lighting equipment and special
warning devices, including the stop sign on a control arm specified in section
39-21-18, to be carried by schoolbuses and other vehicles transporting children to
school for compensation, consistent with the provisions of this chapter, but
supplemental thereto. The standards and specifications must correlate with and, so far
as possible, conform to the specifications then current as approved by the society of
automotive engineers.
2. It is unlawful to operate any flashing warning signal light or the stop sign on the control
arm specified in section 39-21-18 on a schoolbus except when the schoolbus is
stopped on a highway for the purpose of permitting schoolchildren to board or alight
from the schoolbus.
3. Schoolbuses equipped with safety strobe lights pursuant to subsection 4 of section
39-21-18 must have the safety strobe light in operation whenever the schoolbus is
being operated upon a highway for purposes of transporting children either to or from
school or for a school-sanctioned activity. It is unlawful to operate a safety strobe light
on a schoolbus when the schoolbus is used for any other purpose.