ALBERT C. RITCHIE, GOVERNOR. 1057

whether actually dedicated to the public and accepted by the
proper authorities or otherwise. The term "safety zone" shall
include all parts of the public highways or private rights of
way which are elevated above the travelled road-bed, or set
apart therefrom for the exclusive use of pedestrians or street
car passengers and which are guarded or protected against
vehicular travel by posts, plantings, curbing, or otherwise, or
which are appropriately marked or designated as safety zones
by duly constituted State or municipal authorities. Whenever
reference is made in this sub-title to a motor vehicle equipped
with six wheels it shall be construed to mean a motor vehicle
with not more than two wheels on any axle and with all three
wheels on each side of the motor vehicle approximately in
line.

The Commissioner of Motor Vehicles shall have authority,
in disputed cases, to determine the extent of the applicability
of the definitions herein contained.

PART III.

REGISTRATION OF MOTOR VEHICLES AND OPERATORS.

179. Every owner of one or more motor vehicles before
the same shall be operated in this State, and except as herein-
after otherwise provided, shall fill in and file with the Commis-
sioner of Motor Vehicles, on a blank furnished by the Com-
missioner, an application for the registration of such motor
vehicles, containing such information as shall be required by
the Commissioner. The horsepower of all motor vehicles pro-
pelled by gas engines, except motorcycles, shall be computed
and recorded upon the following formula, and the annual regis-
tration fee, hereinafter provided for, paid in accordance here-
with: Square the diameter of the cylinder, multiply by the
number of cylinders and divide by two and one-half. For all
motor vehicles propelled by steam engines, other than tractors
and traction engines, the rating shall be based on the system
of rating adopted by the United States Government. Should
any other motor power be used, and in case of motor
vehicles having solid tires, the Commissioner of Motor
Vehicles is empowered to adopt such formula to govern
their rating as he may deem proper. The said Commissioner
of Motor Vehicles upon the payment of the registration fee
hereinafter provided for, shall file such application in his office

and register such motor vehicle, assigning to it a distinguishing
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