105 STAT. 950 PUBLIC LAW 102-143—OCT. 28, 1991 "(I)(A) An air carrier or foreign air carrier may not operate within the State of Hawaii or between a point in the State of Hawaii and a point outside the 48 contiguous States a greater number of Stage 2 aircraft having a maximum weight of more than 75,000 pounds than it operated within the State of Hawaii or between a point in the State of Hawaii and a point outside the 48 contiguous States on November 5, 1990. "(B) An air carrier that provided turnaround service within the State of Hawaii on November 5, 1990, using Stage 2 aircraft having a msiximum weight of more than 75,000 pounds may include within the number of aircraft authorized under subparagraph (A) all such aircraft owned or leased by that carrier on such date, whether or not such aircraft were then operated by that carrier. "(2) An air carrier may not provide turnaround service within the State of Hawaii using Stage 2 aircraft having a maximum weight of more than 75,000 pounds unless that carrier provided such service on November 5, 1990. "(3) For the purpose of this subsection, 'turnaround service' means the operation of a flight between two or more points, all of which are within the State of Hawaii.". SEC. 350. Unobligated funds in the amount of $170,000 authorized and appropriated under Public Law 101-516 for a highway grade crossing demonstration project in White River Junction, Vermont shall be made available to the State of Vermont Agency of Transportation without regard to whether or not such expenses are incurred in accordance with section 106 of title 23 of the United States Code. SEC. 351. (a) Notwithstanding any other law, the Secretary of Transportation shall construe all references in this Act to title 23, the Urban Mass Transportation Assistance Act of 1964 as amended, and the Federal-Aid Highway Acts in a manner which continues to apply such references to the appropriate programs as may be authorized by a subsequent surface transportation assistance Act. (b) Section 329(a) of the Department of Transportation and Re- 23 USC 154 note, lated Agencies Appropriations Act, 1988, Public Law 100-102, is amended by striking "and 1991" and inserting "1991, and 1992". SEC. 352. TELECOMMUTING STUDY.— The Secretary, in consultation with the Secretary of Energy, shall conduct a study of the potential costs and benefits to the energy and transportation sectors of telecommuting. The study shall include— (1) an estimation of the amount and type of reduction of commuting by form of transportation type and numbers of commuters; (2) an estimation of the potential number of lives saved; (3) an estimation of the reduction in environmental pollution, in consultation with the Environmental Protection Agency; (4) an estimation of the amount and type of reduction of energy use and savings by form of transportation type; and (5) an estimation of the social impact of widespread use of telecommuting. (b) This study shall be completed no more than one hundred and Reports. eighty days after the date of enactment of this Act. A report, summarizing the results of the study, shall be transmitted to the United States House of Representatives and the Committee on Energy and Natural Resources of the United States Senate no more than sixty days after completion of this study.