Marvin Mandel, Governor                          1523

able proportions upon any vehicle when required for safety because
of snow, ice, or other conditions tending to cause a vehicle to skid.

(c) The State Roads Commission and local authorities in their
respective jurisdictions in their discretion may issue special permits
authorizing the operation upon a highway of traction engines or
tractors having movable tracks with transverse corrugations upon
the periphery of such movable tracks or farm tractors or other farm
machinery, the operation of which upon a highway would otherwise
be prohibited under this section.

§ 12-406. Safety glazing material in motor vehicles.

(a)    It shall be unlawful to operate on any highway in this State
any motor vehicle manufactured or assembled after June 1, 1937, and
registered in this State, unless the vehicle be equipped with safety
glass wherever glass is used in the motor vehicle in doors, windows,
windshields, and wings.

(b)    It shall be unlawful to sell any motor vehicle manufactured
or assembled after June 1, 1937, registered or intended to be regis-
tered in this State and operated or intended to be operated on any
highway in this State, unless vehicle be equipped with safety glass
wherever glass is used in motor vehicle in doors, windows, wind-
shields and wings, and every sale in violation of this provision shall
constitute a separate offense.

(c)    It shall be unlawful for the owner of any motor vehicle to
have broken glass in the windshield thereof replaced with any glass
other than safety glass. It shall be unlawful for the owner of any
motor vehicle to have safety glass, broken or otherwise, in doors,
windows or wings of the motor vehicle replaced with any glass other
than safety glass and it shall be unlawful for any person to install in
the doors, windows, windshields, and wings of any motor vehicle any
glass other than glass required by this subsection (c).

(d)    The department shall compile, maintain, and publish a list
of types of glass by name approved by it as conforming to the speci-
fications and requirements of safety glass as set forth in this section,
and shall not register any motor vehicle which is subject to the pro-
visions of this section unless it is equipped with an approved type of
safety glass and shall suspend the registration of any motor vehicle
subject to this section which the department finds is not so equipped
until the vehicle is made to conform to the requirements of this
section.

(e)    In case of any violation of any provision or provisions of this
section by any common carrier or person operating under a permit
issued by the Public Service Commission of Maryland, the permit
shall either be revoked, or, in the discretion of the commission, sus-
pended until the provision or provisions are complied with to the
satisfaction of the commission.

§ 12-407. Certain vehicles to carry flares or other warning devices.

(a) No person shall operate any truck with a registered gross
weight in excess of 10,000 pounds, passenger bus or truck trac-
tor, or any motor vehicle towing a house trailer, upon any highs-
way outside the corporate limits of municipalities at any time from a
half hour after sunset to a half hour before sunrise unless there shall