288 LAWS OF MARYLAND. [Ch. 133]

of each county in the State, to the Board of Police Commis-
sioners of Baltimore City and to the marshal or chief of police
in each city and county where a uniformed force is maintained.

140. No person under the age of eighteen years shall oper-
ate, drive or direct any automobile, motor car, taxi cab or
motor truck propelled by gas, gasoline, steam or electricity,
upon any road, highway, street, lane or other public way within
the State of Maryland. The penalty for the violation of the
provisions of this act shall be a fine of ten dollars for the first
offence, and of twenty-five dollars for the second offence, and a
fine of one hundred dollars, or thirty days in jail, for subse-
quent violations. Any justice of the peace having criminal
jurisdiction shall have full authority to try and determine all
violations of this act as aforesaid.

SEC. 1 1/2. And be it further enacted, That section 140H be
repealed and re-enacted so as to read as follows:

140H. Every motor vehicle or motorcycle, while being used
upon the public highways of this State shall be provided with-
an adequate bell, horn or other signalling device, and it shall
be unlawful for any person operating any motor vehicle or
motorcycle to make or cause to be made any unnecessary noise
by a prolonged blast or otherwise with any such bell, horn or
other signalling device, or to use the same as a warning of
danger, and such signalling device shall not be sounded while
passing a horse or other animal in the open country. Within
the limits of cities, towns or villages of this State, only horns
blown by hand pressure upon a rubber bulb or small electric
bells of moderate sound shall be used during the period of from
one hour after sunset to one hour before sunrise. It shall be
unlawful for any operator of a motor vehicle to operate such
motor vehicle without an adequate muffler or to cut out the
muffler at any hour of the day or night within the limits of
any city, town or village of this State.

141. No driver or operator of any motor car, taxi-cab,
automobile or motor truck shall use any cut out, fitting or other
apparatus or device which will allow the exhaust gases from the
engine of the motor car to escape into the atmosphere without
first passing through a silence, expansion chamber or other con-
trivance suitable and sufficient for reducing as far as may reason-
ably be practicable the noise which would otherwise be caused
by the escape of the said gases; provided that this regulation-
shall apply only to a motor car propelled by an internal com-
bustion engine and shall not extend to a motorcycle and only
within the limits of municipalities, incorporated cities and
towns and villages in the State of Maryland.