Metropolitan planning area
Metropolitan planning area means the geographic area in which the metropolitan transportation planning process required by 23 U.S.C. 134 and 49 U.S.C. 5303-5305 must be carried out.
23 CFR § 420.103
Unless otherwise specified in this part, the definitions in 23 U.S.C. 101 are applicable to this part. As used in this part: