''except in designated areas and under conditions established by the superintendent.''
'''*Gulf Islands National Seashore''' 4.31 has not been amended here, so hitchhiking is prohibited.
'''*Everglades National Park''' 4.31 has not been amended here, so hitchhiking is prohibited.
'''*Big Cypress National Preserve''' 4.31 has not been amended here, so hitchhiking is prohibited.
== Largest Cities ==