23 U.S.C. § 519 - U.S. Code - Unannotated Title 23. Highways § 519. Infrastructure development

(1) shall be used primarily for the development of intelligent transportation system infrastructure, equipment, and systems; and

(2) to the maximum extent practicable, shall not be used for the construction of physical surface transportation infrastructure unless the construction is incidental and critically necessary to the implementation of an intelligent transportation system project.