49, United States Code, $155,300,000, to be derived from the Highway Trust Fund (other than the Mass Transit Account) and to remain available until expended: Provided , That none of the funds in this Act shall be available for the planning or execution of programs the total obligations for which, in fiscal year 2020, are in excess of $155,300,000: Provided further , That of the sums appropriated under this heading: (1) $149,800,000 shall be for programs authorized under 23 U.S.C. 403 , including behavioral research on Automated Driving Systems and Advanced Driver Assistance Systems and improving consumer responses to safety recalls, and section 4011 of the Fixing America’s Surface Transportation Act ( Public Law 114–94 )