(d)] When the Administrator has reason to believe that a device approved
under this title is being sold commercially and does not comply with the applicable
standards for the device, [he] THE ADMINISTRATOR may, after giving 30 days'
previous notice to the person who has received the approval for the device, conduct a
hearing on the question of compliance of the approved device. After the hearing, the
Administrator shall determine whether the devices being sold meet the requirements
for approval. If the devices do not meet these requirements, [he] THE
ADMINISTRATOR shall give notice to the person who has received the previous
approval.

[(e)] (D) If, at the expiration of 30 days after this notice, the person who has
received the approval of the device has failed to satisfy the Administrator that the
devices being sold meet the requirements for approval, the Administrator shall
suspend or revoke the approval issued for the device until the device is resubmitted to
and tested by an independent testing laboratory approved by the American
Association of Motor Vehicle Administrators and is found to meet the applicable
standards. The Administrator may require that all of these devices sold since the
notification following the hearing be replaced by devices that do comply. The
Administrator may, at the time of retest, purchase on the open market and submit for
retesting one or more sets of these approved devices, and, if the device on retest fails
to meet the approval requirements, the Administrator shall revoke or refuse to renew
the approval of the device.

(E) NOTWITHSTANDING ANY OTHER PROVISION OF THE MARYLAND VEHICLE
LAW, THE ADMINISTRATOR MAY ADOPT ANY MOTOR VEHICLE SAFETY STANDARD
PRESCRIBED BY THE SECRETARY OF THE UNITED STATES DEPARTMENT OF
TRANSPORTATION UNDER 49 U.S.C. § 30111.

22-221.

(d) Any vehicle may be equipped with lamps used for the purpose of warning
the drivers of other vehicles of the presence of a vehicular traffic hazard requiring the
exercise of unusual care in approaching, overtaking, or passing, and, when so
equipped, may display the warning in addition to any other warning signals required
by the Maryland Vehicle Law.

(e) The lamps used to display this warning to the front shall be mounted at
the same level and as widely spaced laterally as practicable and shall display
simultaneously flashing white or amber lights, or any shade of color between white
and amber. The lamps used to display this warning to the rear shall be mounted at
the same level and as widely spaced laterally as practicable and shall display
simultaneously flashing amber or red lights, or any shade of color between amber and
red.

(f) These warning lights shall be visible from a distance of not less than 1,500
feet under normal atmospheric conditions at night.

(g) Every motor vehicle that is registered in this State and that was
manufactured or assembled after June 30, 1967, and designated as a 1968 or
subsequent year model shall be equipped [either] with these WARNING lamps [or