1918 LAWS OF MARYLAND. [CH. 1007

(b) Every motorcycle, and bicycle with motor attached,
when operated upon a highway shall be equipped with at least
one brake, which may be operated by hand or foot.

(e) Every trailer or semi-trailer of a gross weight of 3, 000
pounds or more when operated upon a highway shall be
equipped with brakes adequate to control the movement of and
to stop and to hold such vehicle and so designed as to be ap-
plied by the driver of the towing motor vehicle from its cab.
Every such new trailer or semi-trailer hereafter sold and op-
erated upon the highways of this State shall have brakes so
designed and connected that in case of accidental breakaway
of the towed vehicle the brakes thereon shall be automatically
applied, and remain applied for not less than ten minutes.

(d) Every new motor vehicle, trailer, or semi-trailer here-
after sold and operated upon the highways of this State, shall
be equipped with service brakes upon all wheels of every such
vehicle, except any motorcycle, and except that any semi-
trailer of less than 1, 500 pounds gross weight need not be
equipped with brakes.

233. PERFORMANCE ABILITY OF BRAKES.

(a) The service brakes upon any motor vehicle or combina-
tion of vehicles shall be adequate to stop such vehicle or ve-
hicles when traveling twenty (20) miles per hour within a
distance of thirty (30) feet when upon dry asphalt or concrete
pavement surface free from loose material where the grade
does not exceed one (1%) per cent.

(b) Under the above conditions the hand brake shall be
adequate to stop such vehicle or vehicles within a distance of
fifty-five (55) feet and said hand brake shall be adequate to
hold such vehicle or vehicles stationary on any grade upon
which operated.

(e) All braking distances specified in this section shall apply
to all vehicles mentioned, whether such vehicles are not loaded
or are loaded to the maximum capacity permitted under this
Article.

(d) All brakes shall be maintained in good working order
and shall be so adjusted as to operate as equally as practicable
with respect to the wheels on opposite sides of the vehicle.

234. HORNS AND WARNING DEVICES, (a) Every motor ve-
hicle when operated upon a highway shall be equipped with
a horn in good working order and capable of emitting sound
audible under normal conditions from a distance of not less
than 200 feet, but no horn or other warning devices shall