§ 52.1128 Transportation and land use controls.

(a) For purposes of this subpart, the definitions herein are applicable.

(b) Definitions:

(1) Register as applied to a motor vehicle, means the licensing of such motor vehicle for general operation on public roads or highways by the appropriate agency of the Federal Government or by the Commonwealth.

(2) Boston Intrastate Region means the Metropolitan Boston Intrastate Air Quality Control Region, as defined in § 81.19 of this part.

(3) [Reserved]

(4) Freeze area means that portion of the Boston Intrastate Region enclosed within the following boundaries: