primary system
Defined in 2 places of the United States Code.
Definitions.—For purposes of this section, the terms "primary system" and "Federal-aid primary system" mean any highway that is on the National Highway System, which includes the Interstate Highway System.
Source
- 2012–201623 U.S.C. § 136Highways · Control of junkyards · for purposes of this section
For purposes of this section, the terms “primary system” and “Federal-aid primary system” mean any highway that is on the National Highway System, which includes the Interstate Highway System.
Source
- 2013–present23 U.S.C. § 136Highways · Control of junkyards · for purposes of this section
For purposes of this section, the terms “primary system” and “Federal-aid primary system” mean the Federal-aid primary system in existence on June 1, 1991, and any highway which is not on such system but which is on the National Highway System.
Source
- 2026–present23 U.S.C. § 131Highways · Control of outdoor advertising · for purposes of this section
Primary System Defined.—For purposes of this section, the terms “primary system” and “Federal-aid primary system” mean the Federal-aid primary system in existence on June 1, 1991, and any highway which is not on such system but which is on the National Highway System.
Source
- 1994–202623 U.S.C. § 131Highways · Control of outdoor advertising · for purposes of this section