§ 509-h. Operation by person not licensed to drive a bus. The motor
carrier shall not knowingly permit any person to operate a bus carrying
passengers unless the driver meets all of the requirements of this
article; except that a motor carrier may permit a conditional school bus
driver who is not otherwise disqualified under the provisions of this
article to operate a bus for a period not to exceed ninety days or a
longer period if granted a written extension of such ninety day period
by the department pursuant to regulations established by the
commissioner. Such regulation shall authorize extension for at least
that period of time necessary to review information regarding the prior
criminal history of the applicant.