by the United States government

“ The Administrator may impose a prohibition, applicable to a nonattainment area, on the approval by the Secretary of Transportation of any projects or the awarding by the Secretary of any grants, under title 23 other than projects or grants for safety where the Secretary determines, based on accident or other appropriate data submitted by the State, that the principal purpose of the project is an improvement in safety to resolve a demonstrated safety problem and likely will result in a significant reduction in, or avoidance of, accidents. ”

“ Offsets In applying the emissions offset requirements of section 7503 of this title to new or modified sources or emissions units for which a permit is required under this part, the ratio of emission reductions to increased emissions shall be at least 2 to 1. (c) Notice of failure to attain (1) As expeditiously as practicable after the applicable attainment date for any nonattainment area, but not later than 6 months after such date, the Administrator shall determine, based on the area’s air quality as of the attainment date, whether the area attained the standard by that date. ”

“ In addition to safety, projects or grants that may be approved by the Secretary, notwithstanding the prohibition in subparagraph (A) , are the following— (i) capital programs for public transit; (ii) construction or restriction of certain roads or lanes solely for the use of passenger buses or high occupancy vehicles; (iii) planning for requirements for employers to reduce employee work-trip-related vehicle emissions; (iv) highway ramp metering, traffic signalization, and related programs that improve traffic flow and achieve a net emission reduction ”