1484 LAWS OF MARYLAND. [CH. 835

SEC 2. And be it further enacted, That Section 313 of
Article 56 of the Annotated Code of Maryland (1939 Edi-
tion), title "Licenses", sub-title "Public Freight Motor Ve-
hicles", be, and the same is hereby, repealed and re-enacted
with amendments, to read as follows:

313. Except as hereinafter provided, each and every
such motor vehicle so registered shall operate only on the
route and schedule set forth in said application during the
year for which said license is issued.

It shall be the duty of the Commissioner of Motor Ve-
hicles, upon the presentation of a permit from the Public
Service Commission of Maryland, authorizing the motor
vehicle owner to operate on a certain route, to furnish the
motor vehicle owner with a distinguishing plate or marker.

No such motor vehicle owner shall change said schedule
or route of his motor vehicle during any year for which a
certificate has been issued, without a permit, in writing,
made in duplicate, from the Public Service Commission
of Maryland, a copy of which shall be sent to the Commis-
sioner of Motor Vehicles before said schedule is changed.

Nothing in this sub-title shall be construed to prevent
an owner or operator of such regularly licensed vehicles
from replacing in an emergency such vehicles by a substi-
tute vehicle in order to maintain the schedule approved as
herein provided, or in an emergency from operating, tem-
porarily, reserve vehicles on such routes and schedules,
approved as aforesaid for the public accommodation, in
which event immediate notification shall be given the Com-
missioner of Motor Vehicles of the number of trucks, li-
cense plate numbers displayed and destination of all such
emergency vehicles.

In cases where certificates have been issued to such motor
vehicle owner for more than one route, all motor vehicles.
of the same weight, including reserve or substitute ve-
hicles, which have been registered for use upon either or
any of said routes, may be used interchangeably upon either
or any of said routes.

The operation upon any route may be conducted with
greater frequency than prescribed by the approved sched-
ule without obtaining permission therefor from the Public
Service Commission, provided, however, that the approved
schedule shall be strictly maintained and adhered to, until
changed with the permission of the Public Service Com-
mission. Whenever, in the opinion of the Public Service
Commission, it will be prejudicial to the public welfare and
convenience, to permit operations to be conducted upon any
route with greater frequency than prescribed by the ap-
proved schedule, said Commission may limit this privilege
in whatever manner it may deem proper or deny the said