1018 LAWS OF MARYLAND [CH. 506

ways of this State without obtaining a registration certificate
or operator's license from the Commissioner of Motor Vehicles
as hereinbefore prescribed; provided the State of which he
is a resident and the registration certificate which he
displays shall extend the same privilege to residents of this
State; provided that if any non-resident be convicted before
any Justice of the Peace, committing Magistrate or Police
Justice of violating any provision of this sub-title, he shall
thereafter be subject to and required to comply with all the
provisions of this sub-title relating to the registration of
motor vehicles and the licensing of operators thereof; and
the Governor of this State is hereby authorized and empower-
ed to confer and advise with the proper officers and legisla-
tive bodies of other States of the Union, and enter into recip-
rocal agreements under which the registration of motor
vehicles owned by the residents of this State will be recog-
nized by such other States, and he is further authorized atid
empowered From time to time to grant to residents of other
States the privilege of using the roads of this State as in
this section provided in return for similar privileges granted
residents of this State by such other States.

The aforegoing exemption of non-residents shall not apply
to operators of motor vehicles or motor cycles who are resi-
dents of States which do not require the display of identifica-
tion markers on the same, nor shall it apply to non-residents
of this State for periods in excess of three months in any
year or to non-residents engaged as common carriers in the
transportation of passengers or freight wholly or partly in
this State.

Any non-resident operating a motor vehicle in this State
contrary to the provisions of this section shall be deemed guilty
of displaying a fictitious marker, or operating without a
license and subject to the penalties prescribed elsewhere in
this sub-title for such offenses in the case of residents.

PART IV.

OPERATION OF MOTOR VEHICLES.
DISPLAY OF MARKERS.

147. Every motor vehicle, except motor cycles, and as here-
inafter otherwise provided, shall at all times while being used
or operated in this State, have displayed, entirely unobscured