; (2) by striking Martin Luther King, Junior, National Historic Site each place it appears and inserting Martin Luther King, Jr. National Historical Park ; (3) by striking national historic site each place it appears and inserting national historical park ; (4) by striking historic site each place it appears and inserting historical park ; and (5) by striking historic sites in section 2(a) and inserting historical parks . (b) References Any reference in a law (other than this section), map, regulation, document, paper, or other record of the United States to Martin Luther King, Junior, National Historic Site shall be deemed to be a reference to Martin Luther King, Jr. National Historical Park . 7109. Vehicular access and fees at Delaware Water Gap National Recreation Area (a) In general Section 4 of the Delaware Water Gap National Recreation Area Improvement Act ( Public Law 109–156 ; 119 Stat. 2948) is amended to read as follows: 4. Use of certain roads within the Recreation Area (a) In general Except as otherwise provided in this section, Highway 209, a federally owned road within the boundaries of the Recreation Area, shall be closed to all commercial vehicles. (b) Exception for local business use Until September 30, 2021, subsection (a) shall not apply with respect to the use of commercial vehicles that have four or fewer axles and are— (1) owned and operated by a business physically located in— (A) the Recreation Area; or (B) one or more adjacent municipalities; or (2) necessary to provide services to businesses or persons located in— (A) the Recreation Area