The exemption set forth in 49 U.S.C.13506(a)(1)
shall not be construed as being inapplicable to motor
vehicles being used at the time of operation in the
transportation of school children and teachers to or
from school, even though such motor vehicles are
employed at other times in transportation beyond the
scope of the exemption.
[36 FR 9022, May 18, 1971, as amended at 62 FR 15421,
Apr. 1, 1997]