PUBLIC LAW 102-240—DEC. 18, 1991 105 STAT. 1923 if) OPERATIONAL IMPROVEMENT.—Such section is further amended by inserting after the undesignated paragraph relating to Interstate System the following new undesignated paragraph: "The term 'operational improvement' means a capital improvement for installation of traffic surveillance and control equipment, computerized signal systems, motorist information systems, integrated traffic control systems, incident management programs, and transportation demand management facilities, strategies, and programs and such other capital improvements to public roads as the Secretary may designate, by regulation; except that such term does not include resurfacing, restoring, or rehabilitating improvements, construction of additional lanes, interchanges, and grade separations, and construction of a new facility on a new location.". (g) STARTUP COSTS FOR TRAFFIC MANAGEMENT AND CONTROL; CAR- POOL PROJECT; PUBLIC AUTHORITY; PUBLIC LANDS HIGHWAY; RE- CONSTRUCTION. —Such section is further amended by inserting after the undesignated paragraph relating to Interstate System the following new undesignated paragraphs: "The term 'startup costs for traffic management and control' means initial costs (including labor costs, administration costs, cost of utilities, and rent) for integrated traffic control systems, incident management programs, and traffic control centers. "The term 'carpool project' means any project to encourage the use of carpools and vanpools, including but not limited to provision of carpooling opportunities to the elderly and handicapped, systems for locating potential riders and informing them of carpool opportunities, acquiring vehicles for carpool use, designating existing highway lanes as preferential carpool highway lanes, providing related traffic control devices, and designating existing facilities for use for preferential parking for carpools. "The term 'public authority' means a Federal, State, county, town, or township, Indian tribe, municipal or other local government or instrumentality with authority to finance, build, operate, or maintain toll or toll-free facilities. "The term 'public lands highway' means a forest road under the jurisdiction of and maintained by a public authority and open to public travel or any highway through unappropriated or unreserved public lands, nontaxable Indian lands, or other Federal reservations under the jurisdiction of and maintained by a public authority and open to public travel.". SEC. 1006. NATIONAL HIGHWAY SYSTEM. (a) ESTABLISHMENT. — Section 103 of title 23, United States Code, is amended by striking subsections (a) and (b) and inserting the following new subsections: "(a) IN GENERAL.— For purposes of this title, the Federal-aid systems are the Interstate System and the National Highway System. " (b) NATIONAL HIGHWAY SYSTEM.— "(1) PURPOSE.— The purpose of the National Highway System is to provide an interconnected system of principal arterial routes which will serve major population centers, international border crossings, ports, airports, public transportation facilities, and other intermodal transportation facilities and other major travel destinations; meet national defense requirements; and serve interstate and interregional travel. " (2) COMPONENTS.—The National Highway System shall consist of the following:
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