142. None of the funds made available by this Act may be used to obligate or award funds for the National Highway Traffic Safety Administration's National Roadside Survey. 143. None of the funds made available by this Act may be used to mandate global positioning system (GPS) tracking in private passenger motor vehicles without providing full and appropriate consideration of privacy concerns under 5 U.S.C. chapter 5, subchapter II. 144. In addition to the amounts made available under the heading, Operations and Research (Liquidation of Contract Authorization) (Limitation on Obligations) (Highway Trust Fund) for carrying out the provisions of section 403 of title 23, United States Code, $15,000,000, to remain available until September 30, 2020, shall be made available to the National Highway Traffic Safety Administration from the general fund, of which not to exceed $5,000,000 shall be available to provide funding for grants, pilot program activities, and innovative solutions to reduce drug-impaired-driving fatalities in collaboration with eligible entities under section 403 of title 23, United States Code, and not to exceed $10,000,000 shall be available to continue a high visibility enforcement paid-media campaign regarding highway-rail grade crossing safety in collaboration with the Federal Railroad Administration. Federal railroad administration Safety and operations For necessary expenses of the Federal Railroad Administration, not otherwise provided for, $221,698,000, of which $18,000,000 shall remain available until expended. Railroad research and development For necessary expenses for railroad research and development, $40,600,000, to remain available until expended. Railroad rehabilitation and improvement financing program That the Secretary of Transportation is authorized to issue direct loans and loan guarantees pursuant to sections 501 through 504 of the Railroad Revitalization and Regulatory Reform Act of 1976 ( Public Law 94–210 ), as amended, such authority shall exist as long as any such direct