758                               LAWS OF MARYLAND                        [CH. 441

permit is in force, without permission, in writing, from the com-
mission. Such permission shall be granted only where the commis-
sion finds that the public convenience and welfare are not preju-
diced thereby, and a copy thereof shall be sent to the Commissioner
of Motor Vehicles by the commission before it becomes effective, for
readjustment of charges payable under Article 56. However, an
owner may temporarily operate substitute or reserve vehicles, where
necessary in an emergency, in order to maintain the prescribed
schedules over his route; and where an owner has permits for more
than one route, all motor vehicles, including reserve or substitute
vehicles, with the same number of passenger seats, (or the same
weight, if freight carriers) registered for use upon any of such
routes, may be used interchangeably.

(b)  Frequency of operations under any motor carrier permit may
exceed that prescribed in the permit if (1) the approved schedule
is strictly maintained; and (2) if, where the vehicle is used for
passenger carriage, the owner reports to the commission on or
before the fifth business day of the succeeding month the actual
number of miles traveled by and the license number of the motor
vehicles operated on each of his routes for the preceding calendar
month, transmits to the Commissioner of Motor Vehicles a copy of
the report, and pays to him a total fee under Article 56, adjusted
to the actual number of seat miles traveled. No specific permission
of the commission shall be necessary for increased frequency of
operation, but the commission may, at any time, limit or deny this
privilege if in its opinion the exercise thereof would prejudice the
public welfare and convenience.

(c)  Permits issued to carriers of flammables shall not restrict
such carriage to any fixed routes or schedules.

(d)  Nothing in this sub-title shall be construed to limit the power
of incorporated cities and towns to adopt reasonable traffic regula-
tions, including the designation of streets and the power to prohibit
the use of certain streets or the parking of vehicles thereon where
such use or parking may menace the public safety or unduly con-
gest traffic.

Railroad Companies
35. (Supply of cars.)

(a)   Unless the commission otherwise orders, every railroad com-
pany shall have sufficient cars and motive power to meet all require-
ments for the transportation of passengers, property and freight
which may be reasonably anticipated, and every street railroad
company shall have sufficient cars and motive power to meet all
such requirements for the transportation of passengers.

(b)  If at any time any railroad company has not sufficient cars
to meet the demand for transportation of freight in carload lots,
all available cars shall be distributed to shippers applying therefor,
without discrimination of any kind (whether as to shippers, locali-
ties, or competitive or non-competitive points). Preference in the
supply of cars may, however, be given to shipments of livestock or
perishable property.

36. (Receipt of Freight Cars at Connecting Points.)
Every railroad company shall receive from every other railroad
company, at a connecting point, freight cars of proper standard and