; (2) a review of air carrier and airport training policies related to section 41705 of title 49, United States Code; (3) a review of air carrier training policies related to properly assisting passengers with disabilities; and (4) a review of accessibility best practices that exceed those recommended under Public Law 90–480 (popularly known as the Architectural Barriers Act of 1968; 42 U.S.C. 4151 et seq.), the Rehabilitation Act of 1973 ( 29 U.S.C. 701 et seq.), the Air Carrier Access Act of 1986 ( Public Law 99–435 ; 100 Stat. 1080 et seq.), and the Americans with Disabilities Act of 1990 ( 42 U.S.C. 12101 et seq.). (b) Report Not later than 1 year after the date the Comptroller General initiates the study under subsection (a), the Comptroller General shall submit to the Secretary of Transportation and the appropriate committees of Congress a report on the study, including findings and recommendations. 432. Study on in-cabin wheelchair restraint systems (a) Study Not later than 2 years after the date of enactment of this Act, the Architectural and Transportation Barriers Compliance Board, in consultation with the Secretary of Transportation, aircraft manufacturers, air carriers, and disability advocates, shall conduct a study to determine— (1) the feasibility of in-cabin wheelchair restraint systems; and (2) if feasible, the ways in which individuals with significant disabilities using wheelchairs, including power wheelchairs, can be accommodated with in-cabin wheelchair restraint systems. (b) Report Not later than 1 year after the initiation of the study under subsection (a), the Architectural and Transportation Barriers Compliance Board shall submit to the appropriate committees of Congress a report on the findings of the study. 433. Improving wheelchair assistance for individuals with disabilities Following the receipt of the report required under section 2107 of the FAA Extension, Safety, and Security Act of 2016 ( Public Law 114–190